Environmental Rules in California (2026)

California Water Code sections 13260 and 13383 implement the federal Clean Water Act through statewide MS4 NPDES…

Buena Park bans illicit connections to the storm drain system and any discharge of pollutants into it, enforcing the…

Calaveras County bans discharging anything but stormwater into its county-maintained storm drains and the channels…

Cupertino bans discharging anything other than stormwater into its storm drain system, watercourses, or San Francisco…

Elk Grove bans nearly all nonstormwater discharges into its storm drains and creeks under Municipal Code Section…

Fairfield bans any non-stormwater discharge into its storm drain system under City Code Section 22B.070, and Section…

Lancaster bans dumping trash, debris, or any material into stormwater drainage facilities, public or private, under…

Lodi bans any discharge other than stormwater into its storm drains, gutters and creeks citywide. Grass clippings, pet…

Orange County's Water Quality Ordinance bars anyone in the unincorporated area from creating an illicit connection to…

Rialto's storm sewer ordinance bans discharging anything but rainwater into the city's storm drains, gutters and…

San Clemente bans illicit connections and prohibited discharges into its stormwater drainage system under Chapter…

Discharging pollutants or non-stormwater into the county's storm drains or waterways is a crime in unincorporated San…

Section 8.68.080 of the County Code bans any non-stormwater discharge into San Luis Obispo County's storm drain system…

Unincorporated Alameda County bans discharging anything but stormwater into its storm drains, creeks or the bay, with…

Alhambra bans dumping, spilling or discharging any solid or liquid waste, including pollutants, into the municipal…

Antioch Municipal Code Chapter 9 bans any non-stormwater discharge into the city's storm drain system and requires an…

Bakersfield bans dumping wastewater, rubbish, litter, pesticides or hazardous materials into any stormwater system or…

Baldwin Park bans illicit discharges and illicit connections to its municipal storm drain system under Municipal Code…

Berkeley bans discharging anything but stormwater into its storm drain system under Chapter 17.20, with construction…

Chapter 50 of the Butte County Code bans any 'illicit discharge' of non-stormwater materials into the County storm…

Carlsbad bans any non-stormwater discharge into its storm drain system under Municipal Code Chapter 15.12. The City…

Chino Hills bans any discharge into its municipal storm drain system that isn't stormwater itself, under CHMC §…

Clovis bans illicit discharges into its storm drain system under the Urban Storm Water Quality Management and Discharge…

Costa Mesa bans any illicit connection to the storm drain system and any prohibited discharge of pollutants into it…

Davis bans discharging anything but stormwater into its storm drain system under Chapter 30, implementing its federal…

Downey bans dumping anything but rain into its storm drains. Municipal Code § 5703 prohibits illicit connections to the…

Dublin, California bans any discharge to its municipal storm drain system that is not entirely stormwater, with narrow…

El Cajon bans any non-storm-water discharge into its storm drain system unless the Regional Water Quality Control Board…

Escondido bans nearly all non-stormwater discharges into its municipal separate storm sewer system (MS4) under…

Folsom bans any nonstormwater discharge into its storm drain system or receiving waters under Chapter 8.70, backing its…

Fontana bans discharging anything but stormwater into its municipal storm drain system. Sec. 23-510 lists prohibited…

Fremont bans any discharge into the storm drain system that is not entirely stormwater, and it is a misdemeanor…

Fullerton's Water Quality Ordinance bans illicit connections to the storm drain system and any discharge other than…

Garden Grove Municipal Code Section 6.40.040 bans illicit connections to the City's stormwater drainage system and any…

Hanford bans putting anything but rainwater into the storm drain system citywide, with fines that climb to $1,000 per…

Hawthorne Chapter 8.50 bans any illicit discharge into the city's storm drain (MS4) system unless it is an…

Hercules bans any non-stormwater discharge into its storm drains and requires a City-approved stormwater control plan…

Huntington Beach bans illicit connections to the storm drain system and any discharge that causes pollution…

Inglewood bans illicit connections and illicit discharges to its municipal storm drain system under Article 16 of the…

Irvine bans illicit connections to the stormwater drainage system and any discharge that pollutes, contaminates, or…

Unincorporated Kern County bans dumping anything but rain into the county's storm drains. Kern County Code § 14.26.250…

Livermore Municipal Code Sec. 13.45.030 bars anyone from discharging anything but stormwater into the city's storm…

All grading in unincorporated LA County must comply with NPDES requirements: best management practices must be…

Marin County Code of Ordinances § 23.18.060 bans discharging anything but stormwater into a county storm drain or an…

Mission Viejo bans illicit connections to the storm drain system and any discharge of pollutants to city stormwater…

Modesto's Storm Water Management and Discharge Controls Ordinance bans any non-storm-water discharge into the City's…

Monterey bans discharging anything but storm water into the municipal storm drain system or waters of the state…

Moreno Valley bans discharging any pollutant into streets, storm drains, or the municipal storm sewer system under…

Newport Beach bans illicit connections to the storm drain system and any discharge other than stormwater under…

Norwalk bans illicit connections and non-stormwater discharges into its municipal storm drain system under Chapter…

Oakland bans non-storm-water discharges into its storm sewer system and prohibits illicit drainage connections to storm…

Oceanside's Chapter 40 Urban Runoff and Discharge Control Ordinance bans discharging pollutants or non-storm water into…

Ontario bans dumping refuse, wash water, pet waste, pool chemicals and dozens of other pollutants into any street…

Orange bans illicit connections to its storm drain system and any discharge of a pollutant into it, under Municipal…

Oxnard bans discharging anything but storm water into its storm drain system without a permit and outlaws illicit…

Petaluma's storm sewer system carries rainwater straight to local creeks and the Petaluma River untreated, so Chapter…

Pleasanton bans any discharge to its storm drain system that isn't composed entirely of stormwater. § 9.14.080 of the…

Pomona's Low Impact Development Ordinance, City Code Article VII of Chapter 74, requires larger development and…

Rancho Cordova makes it unlawful to discharge anything other than storm water into the city's storm drains under RCMC…

Rancho Cucamonga bans discharging anything but clean stormwater into its municipal separate storm sewer system unless a…

Redlands prohibits discharging anything other than stormwater into its separate storm drain system, bans illicit…

Redwood City bans discharging anything but stormwater into its municipal storm drains under Municipal Code Chapter 27A…

Riverside bans dumping anything but rain into its storm drain system, expressly covering pet waste, green waste…

Roseville makes it unlawful to discharge sewage, industrial waste, pollutants, garbage or rubbish into any municipal…

Sacramento City Code Chapter 13.16 bans any nonstormwater discharge into the city's storm drain system unless it falls…

In unincorporated Sacramento County it is unlawful to release anything but rain into the County storm drain system or…

San Bernardino bans dumping anything but rain into its storm drains under Municipal Code Chapter 8.80. Pet waste, wash…

San Diego bans dumping anything but rainwater into storm drains, and violators face misdemeanor charges plus civil…

San Marcos bans any illegal discharge into its storm drain system under Municipal Code Chapter 14.15. Businesses…

Unincorporated San Mateo County bans dumping anything but rainwater into the county storm drain system under its…

San Rafael bans any non-stormwater discharge into its storm drain system under the Urban Runoff Pollution Prevention…

San Ramon bans dumping anything but rain into its storm drains under Municipal Code Chapter XII. Non-stormwater…

Santa Ana bans illicit connections to the storm drain system and any non-stormwater discharge that isn't specifically…

Chapter 29, Article IV of the County Code bans any non-storm water discharge into the county's storm drain system that…

Santa Cruz County bans any nonstormwater discharge from leaving private property or entering the storm drain system…

Santa Maria bans any non-storm water discharge to public or private property and requires storm water discharges to…

Santa Monica prohibits non-stormwater discharges to the city's storm sewer system (MS4) and requires all property…

Simi Valley bans discharging anything but stormwater into the City's storm drain system, with a narrow list of exempt…

The City of Sonoma bans illicit discharges and connections into its stormwater conveyance system under SMC 13.32.050…

Stanislaus County bans any nonstormwater discharge into the county's stormwater conveyance system outside a short…

Stockton bans any discharge to its storm drain system besides clean stormwater. The Municipal Utilities Department…

Sunnyvale's Chapter 12.60 stormwater ordinance bans any discharge to the storm drain system that isn't composed…

Temecula bans any discharge other than stormwater into its storm drain system under Municipal Code § 8.28.200, covering…

Tracy's Stormwater Management and Discharge Control Ordinance, codified at Municipal Code chapter 11.34, bars any…

Truckee's Stormwater Quality Ordinance bans discharging anything other than stormwater into the Town's storm drain…

Tulare County bans dumping refuse, animal waste or any non-storm-water pollutant into its storm drain system (MS4) in…

Turlock bans discharging anything but storm water into its municipal storm drain system, covering wash water, pool…

Union City bans discharging anything but stormwater into the city storm sewer system under its Storm Water Management…

Vallejo bans discharging anything but stormwater into its storm drain system under Section 12.41.060, and requires a…

West Covina bans illicit discharges into its storm drain system under Chapter 9, Article II, and holds property owners…

Westminster regulates stormwater under Chapter 8.30 (Water Quality), the city's implementation of its Santa Ana…

Alameda bans non-storm water discharges into the city storm sewer system and makes illicit drainage connections…

Anaheim bans illicit connections and prohibited discharges into its storm drain system citywide under AMC Chapter…

New residential development in Apple Valley must cut peak storm runoff at least 10% below pre-development levels and…

The City of Bellflower, Los Angeles County bans illicit discharges into its municipal storm drain system under its…

Brentwood bars any non-stormwater discharge into its storm drain system and any stormwater discharge that violates the…

Camarillo bans discharging pollutants into its storm drain system and requires a permit for any non-stormwater…

New development and redevelopment projects of one acre or more in Carson must use low-impact-development BMPs to retain…

Ceres bans any non-storm water discharge into the City's storm drain system, with narrow exemptions, to keep pollutants…

Chico prohibits any non-storm water discharge into the city's storm drain system unless specifically exempted…

Chino requires a city-approved Water Quality Management Plan before grading or building permits issue on qualifying…

Chula Vista bans any non-storm water discharge into its municipal storm drain system under CVMC § 14.20.100, backing a…

In unincorporated Colusa County, agricultural-zone development that needs a permit or administrative permit must…

Compton bans any illicit discharge into its municipal storm drain system and requires large parking lots and commercial…

In unincorporated Contra Costa County, releasing anything other than stormwater into a gutter, storm drain, creek, or…

Corona bans dumping pollutants into streets, gutters, catch basins and storm drains, and prohibits illicit connections…

Eastvale bans discharging any pollutant into streets, storm drains, catchbasins or private and public land under…

El Dorado County's Stormwater Quality Ordinance, County Code Chapter 8.79, makes it unlawful to discharge or connect…

El Monte bans any nonstormwater discharge into the city storm drain system under Municipal Code Chapter 13.16…

Fresno's Urban Storm Water Quality Management and Discharge Control Ordinance bans non-storm-water discharges into the…

Fresno County Code Chapter 17.64 requires anyone developing or dividing land in the unincorporated county to pay a…

Glendale bans discharging flammable, toxic, medical or hazardous materials, obstructive solids, or anything that…

New subdivisions in unincorporated Glenn County must be engineered to withstand a one-hundred-year flood without…

Hayward bans non-stormwater discharges into its storm sewer system under Municipal Code Article 5, tying every property…

Hemet bans depositing pollutants into streets, gutters, storm drains, or any public or private property in the city…

Hesperia bans discharging pollutants, illicit non-stormwater or hazardous materials into its storm drain system, and…

Imperial County bans discharging non-stormwater or pollutant-laden runoff into the county's stormwater conveyance…

Indio bans discharging pollutants into the city storm drain system, requires NPDES permit compliance for construction…

New commercial development in Armona, Home Garden, Kettleman City and Stratford must build onsite stormwater detention…

Lake County bans any non-storm water discharge into the County storm drainage system or natural surface waters outside…

Grading projects in Lake Forest that need State Construction General Permit coverage must prove NPDES compliance before…

Lakewood adopts Los Angeles County's Stormwater and Runoff Pollution Control Ordinance (L.A. County Code Chapter 12.80)…

Long Beach's Stormwater and Runoff Pollution Control Ordinance bans dumping anything into the municipal storm drain…

Los Angeles prohibits illicit discharges to the storm drain system and requires all dischargers citywide to comply with…

Los Banos regulates what can enter its storm drains under the Los Banos Urban Storm Water Management and Discharge…

Every new subdivision in Madera must collect and route its storm water runoff through an approved storm drain system…

Unincorporated Madera County bans discharging any pollutant other than stormwater into the county's MS4 storm drain…

Manteca bans discharging pollutants into its storm drain system or any watercourse, and requires new development and…

The Stormwater Runoff Pollution Prevention Procedure bans illicit discharges and illegal connections into the County…

Menifee bans any non-stormwater discharge into the city's storm drain system unless it falls on Chapter 15.01's short…

Merced makes it a misdemeanor to discharge anything but stormwater into the city's storm drain system under Municipal…

Merced County Code Chapter 9.53 bars discharging anything other than stormwater into the county's storm drain system in…

Chapter 16.14 of the Monterey County Code bans non-stormwater discharges into the county storm drain system across the…

Moorpark bans dumping anything but rainwater into its storm drain system: illicit connections and discharges of…

Mountain View bans dumping anything but stormwater into curbside gutters, storm drains and creeks under City Code Sec…

Murrieta Municipal Code Chapter 8.36 bans any discharge into the city's storm drain system that the NPDES permit…

In the City of Pacifica, discharging anything other than storm water into the City storm water system is prohibited…

Palm Springs bans any discharge into its storm drain system that is not composed entirely of stormwater, covering…

Palmdale prohibits dumping trash, debris or vegetation into any natural or manmade storm drainage facility, public or…

Pasadena's Stormwater Management and Discharge Control Ordinance bars any discharge into the municipal storm drain…

Perris Municipal Code Chapter 14.22 makes it unlawful to release anything other than stormwater into the city's storm…

Placer County's Stormwater Quality Ordinance bans illicit discharges into the county storm drain system across the…

Redding bans discharging any pollutant into the city's stormwater conveyance system or receiving waters when it…

Redondo Beach Municipal Code Chapter 7 bans illicit discharges and connections into the City's storm drain system (the…

Riverside County bans dumping pollutants into streets, storm drains and drainage structures countywide and requires new…

Rohnert Park bans any non-storm water discharge into its municipal storm drain system under Chapter 13.64, enforced by…

Salinas bars any non-stormwater discharge into its municipal storm drain system under Municipal Code Chapter 29…

Grading, excavation, and fill work in unincorporated San Benito County requires a county grading permit, and drainage…

Development projects in unincorporated San Bernardino County must submit a Water Quality Management Plan with…

San Francisco sorts development by impervious surface: Small Development Projects at 2,500 to 5,000 square feet must…

County ordinance bars discharging pollutants into the storm drainage system and requires compliance with the County's…

San Jose requires on-site stormwater runoff treatment measures on most projects that create 5,000+ square feet of new…

San Leandro's Storm Water Management and Discharge Control Ordinance (SLMC Ch. 3-15) bans dumping anything but rain…

Santa Clara requires every construction site owner and operator to run erosion, sediment and runoff controls through…

Dumping anything but rainwater into storm drains or waterways in unincorporated Santa Clara County is illegal, and…

Santa Clarita bans illicit discharges and connections into its storm drain system under Municipal Code Section…

Santa Rosa bans altering, blocking, or dumping material into any storm water channel, pipe, or drainage easement…

Shasta County Code Section 18.10.090 makes it unlawful to discharge any pollutant, any non-storm water, or any storm…

Any Solano County grading project disturbing an acre or more must comply with NPDES stormwater rules under Code Section…

Sonoma County prohibits discharging anything but stormwater into the county's stormwater system, requiring construction…

South Gate regulates stormwater and drainage through Chapter 6.67, aimed at cutting pollutants that reach the city's…

Thousand Oaks makes it unlawful to discharge anything but stormwater into the City's storm drain system, and…

Upland regulates its storm drain system under Municipal Code Article IV of Chapter 13.32. Connecting to, modifying, or…

Vacaville's Urban Storm Water Quality, Management and Discharge Control Ordinance requires anyone whose activity could…

Chapter 8.600 of the San Buenaventura Municipal Code bars discharging anything but stormwater into the city's storm…

Ventura County bans non-stormwater discharges into the county storm drain system and receiving waters unless permitted…

Victorville bans dumping anything but rainwater into its storm drain system. Section 10.30.090 prohibits discharging…

Vista Municipal Code Chapter 13.18 bans illegal discharges into the city's storm drain system unless exempted under…

WSMC §13.10 (Urban Stormwater Quality Management and Discharge Control) prohibits the commencement, conduct, or…

Whittier bans letting anything but stormwater enter its municipal storm drain system: section 8.36.050 makes it…

Yolo County's Stormwater Ordinance, Sec. 10-9.201, bans any illicit discharge, anything but stormwater, into the County…

Yuba City bans any non-stormwater discharge into its storm drains, watercourses or channels under its Stormwater…

Yuba County's Stormwater Quality Ordinance makes it unlawful to discharge anything but clean rainwater into the…

Ridgecrest's landscape ordinance encourages stormwater best management practices in landscape and grading design to cut…

California requires anyone clearing, grading, or disturbing one acre or more of land to obtain coverage under the State…

The City of Bellflower, Los Angeles County requires a state NPDES construction stormwater permit before grading one…

Carlsbad's Grading Ordinance requires erosion and sediment control measures before rainy-season grading starts, with…

Chino Hills bans any site condition that causes or is likely to cause accelerated erosion. Municipal Code Section…

Any construction, commercial or industrial project in Downey that needs a state NPDES stormwater permit must have it…

Fremont requires a grading permit from the city engineer before moving 100 cubic yards of earth, altering a…

Hawthorne requires construction sites to deploy sediment barriers, silt fencing, tracking controls and slope erosion…

Before Irvine issues a grading permit, developers must have an approved erosion and sediment control plan on file…

All cut and fill slopes in unincorporated LA County must be planted and irrigated to prevent erosion, with taller…

Marin County requires an approved erosion and sediment control plan for any project with a grading permit, or any…

Modesto requires a Grading and Erosion Control Permit before moving 350 cubic yards or more of soil or clearing more…

Murrieta requires an approved erosion and sediment control plan before any grading permit is issued, and every grading…

Norwalk requires an approved erosion and sediment control plan before a discretionary permit issues for hillside…

Oceanside requires anyone conducting land disturbance or construction work to install erosion and sediment control best…

Petaluma's Grading Ordinance bars any grading, excavation or fill work without a public works department permit and…

Every construction site in Pleasanton must run effective erosion, run-on/runoff and sediment control from demolition…

Roseville requires any construction project subject to a State Water Resources Control Board stormwater pollution…

No one may grade any site in Sacramento without first getting the director's approval under City Code § 15.88.060…

Anyone grading, excavating, or filling land in unincorporated San Benito County needs a grading permit from the…

Builders in San Bernardino disturbing an acre or more must get a state construction storm water permit and file a local…

Coastal-zone development in unincorporated Santa Cruz County needs an approved erosion control plan under SCCC Chapter…

Truckee's Stormwater Quality Ordinance requires year-round erosion control BMPs on every construction site and bars new…

Every subdivision approved in Alameda must control construction erosion under Section 30-85.6: sediment-control…

Grading operations in unincorporated Alameda County must follow erosion and sediment control standards under §…

Before Alhambra issues a grading or building permit, applicants must prove they have filed a Notice of Intent and…

Anaheim requires every cut or fill slope to be protected with an approved erosion control device, planting, jute mesh…

Antioch requires every construction project to follow CASQA and ABAG erosion-control manuals plus the city's grading…

Apple Valley's grading code, Appendix J of the 2025 California Building Code adopted by Chapter 8.12, requires cut and…

Bakersfield's Appendix J grading code, adopted at § 15.05.170, requires a permit and soils/geology reports before…

Baldwin Park bars grading permits and construction activity subject to the state's General Construction Activity Storm…

Brentwood requires a grading permit for most land-disturbing work and mandates erosion and sediment control measures on…

Buena Park's stormwater ordinance blocks grading permits for construction sites disturbing five acres or more until the…

Grading more than fifty cubic yards anywhere in unincorporated Butte County requires a grading permit and an Erosion…

Every grading and earthwork project in unincorporated Calaveras County, permitted or not, must use best management…

Camarillo requires the exposed face of every cut and fill slope created under a grading permit to be prepared and…

Carson requires every construction-activity discharger to comply with the state's general or individual NPDES…

Every construction project in Ceres, regardless of size, must run BMPs for erosion and sediment control, soil…

Before issuing any grading or building permit, Chico requires construction operators to submit an erosion and sediment…

Any Chino grading, demolition, or soil-disturbing project moving more than fifty cubic yards needs a city…

Graded cut or fill slopes in Chula Vista may not exceed 2:1 (horizontal to vertical) under CVMC § 15.04.040, and the…

Clovis Municipal Code Section 9.110.040 requires every subdivision grading plan to use best-available management…

Grading or development on natural slopes over 15 percent anywhere in unincorporated Colusa County must follow the…

Compton will not issue a grading permit or allow construction that disturbs five or more acres of soil unless the…

Contra Costa County's grading ordinance requires erosion protection on any cut slope over five feet or fill slope over…

Corona requires an approved Erosion Control Plan for any grading-permit work under Municipal Code § 15.36.060, and bars…

Costa Mesa requires grading and excavation work to comply with the Orange County Grading and Excavation Code, adopted…

Cupertino requires an Interim Erosion and Sediment Control Plan for grading and land-disturbing work, covering sediment…

Before breaking ground in Davis, the property owner or leaseholder must submit an erosion and sediment control plan…

Dublin's Grading Regulations chapter bars rainy-season grading unless there is no substantial risk of increased…

Eastvale requires a grading permit before any excavation or fill on private property, under Municipal Code Chapter…

Any El Cajon construction permit application, including grading permits, must include an erosion and sediment control…

El Dorado County requires a grading permit for nearly all land-disturbing work in the unincorporated area under Chapter…

El Monte requires an erosion and sedimentation control permit alongside any grading permit under Municipal Code Section…

Elk Grove requires a grading and erosion control permit before any project moves 350 cubic yards or more of soil or…

Escondido requires every grading project to include an erosion control plan stamped by a registered civil engineer and…

Fairfield's Grading and Erosion Control article, City Code Section 25.247, requires every grading project to protect…

Folsom requires cut and fill slopes on a grading site to be protected against erosion as soon as practicable, with…

Fontana controls construction-related soil erosion by wind through Article III of Chapter 9, which adopts San…

Fresno folds erosion and sediment control into its storm water ordinance rather than a separate grading code: new…

Fresno County requires every grading permit to complete erosion-control measures before the county will approve final…

Fullerton requires an approved grading permit and erosion-control plan before any grading that alters natural drainage…

Glendale requires any construction that disturbs an acre or more of soil to file a stormwater Notice of Intent, get a…

In unincorporated Glenn County, commercial and industrial development projects must follow eight erosion control…

Any grading in Hanford, California requires city approval under Hanford Municipal Code § 15.55.050, and applicants bear…

Any grading or clearing in Hayward, whether or not it needs a permit, must follow the erosion and sediment control…

Hemet grading permits must include an erosion and sediment control plan meeting Clean Water Act, MS4, and NPDES…

Hercules requires a Final Erosion and Sediment Control Plan, prepared by a registered civil engineer, for most grading…

Every construction project in Hesperia, regardless of size, must have a city-approved erosion and sediment control plan…

Huntington Beach's Grading Code requires every construction site to control erosion on cut and fill slopes, using…

Imperial County requires a county-engineer grading permit for excavation or earthwork in the unincorporated area, but…

Indio bars rainy-season grading without an approved erosion control system whenever the Director of Public Works finds…

Construction sites in Inglewood under one acre must use erosion and sediment control best management practices under…

Unincorporated Kern County requires a grading permit before any excavation or fill under Section 17.28.040 of the…

Kings County has no standalone erosion-control ordinance; instead the Public Works Director must review and recommend…

Commercial and industrial development in unincorporated Lake County must limit exposed soil, preserve natural drainage…

Lake Forest requires every grading project to follow the city's stormwater best management practices, its NPDES permit…

Lancaster bars anyone who owns or controls land from disturbing its surface, through excavating, grading, leveling…

Livermore requires every construction contractor working in the city to install filter materials at catch basins so…

Every construction project in Lodi, regardless of size, must implement best management practices for erosion and…

No grading, excavation or fill work in Long Beach may start without a Building Official-issued permit under LBMC…

Hillside grading that disturbs vegetative ground cover requires erosion control to be completed within 30 days of work…

Los Banos requires a Storm Water Pollution Prevention Plan before construction begins on any project that disturbs one…

Construction and grading projects in unincorporated Madera County must retain sediment on site and hold cut slopes to…

Before Manteca issues a construction permit, projects covered by a state construction storm water permit must first…

Anyone grading in unincorporated Mendocino County must control erosion on cut and fill slopes, typically with planting…

Any work under a Menifee grading permit needs an approved erosion control plan before dirt moves. The City…

Every construction project in Merced with soil disturbance exposed to stormwater must install erosion and sediment…

Before disturbing any soil, operators of construction projects in unincorporated Merced County must prepare and submit…

Every grading permit in Mission Viejo carries an active erosion-control mandate, not a one-time plan. City Code Sec…

Monterey requires every construction project's building or land-use permit to build in site-specific erosion and…

Monterey County Code Section 16.08.340 requires anyone grading land in the unincorporated county to prepare and…

Moorpark caps manufactured slopes in hillside areas at 30 feet, requires variable gradients above 15 feet, and…

Moreno Valley Municipal Code Section 8.21.160 requires an approved erosion control plan before the city issues any…

Every construction project in Mountain View that disturbs less than one acre must manage storm water and erosion on…

Newport Beach requires erosion control on every graded slope and pad under Municipal Code Section 15.10.130: check…

Oakland requires a grading permit from the City Engineer or Building Official before any excavation or fill exceeding…

Orange requires grading and building permit applicants to control erosion and sediment before the City signs off. The…

Any grading, clearing, brushing, or grubbing preparatory to grading in unincorporated Orange County requires a permit…

Oxnard requires every grading, building, demolition or stockpile permit for construction that disturbs land to include…

Anyone doing construction or development work in the City of Pacifica must install best management practices, or BMPs…

Every construction site in Palm Springs must control erosion and sediment under Riverside County Ordinance 457, which…

Palmdale requires a storm water management plan with erosion-control measures for any grading permit covering work…

Pasadena requires an erosion and off-site sedimentation control design plan before the building official will issue a…

Perris requires anyone grading or building in the city to use best management practices that keep sediment and…

Unincorporated Placer County requires a separate erosion and sediment control plan on top of any grading permit once a…

Pomona controls erosion and sediment at grading and excavation sites by adopting Appendix J of the 2025 California…

Rancho Cordova requires a grading and erosion control permit under RCMC Section 16.44.050 to move, fill, excavate…

Rancho Cucamonga requires every grading permit holder to actively prevent erosion, flooding, and mud or debris…

Redding's Grading Ordinance requires a city engineer permit before clearing, grading, or importing or exporting earth…

Redlands requires anyone grading a construction site to hold a permit under Redlands City Code Section 15.04.070 and to…

Redondo Beach requires drainage and erosion control plans approved by the City Engineer before it will process a…

In Redwood City's R-1/RH districts, at least 40 percent of each lot and 60 percent of the required front yard must…

Rialto requires a grading permit for any excavation or fill exceeding one foot in depth or height, and the development…

Ridgecrest requires a grading permit once 51 or more cubic yards of soil are moved, and an engineered grading plan once…

Riverside requires cut and fill slopes of five feet or more in vertical height to be planted or otherwise treated to…

Grading, excavation, and earthwork on unincorporated Riverside County land require a permit from the Building Official…

Rohnert Park requires an erosion and sediment control plan with any grading permit under Chapter 15.52, and…

Sacramento County requires a Grading and Erosion Control Permit before moving 350 cubic yards or more of soil, or…

Every construction site in Salinas must follow the city's Standards to Control Excavations, Cuts, Fills, Clearing…

San Bernardino County adopts the California Building Code's grading appendix and carves out an exemption: County Code §…

San Clemente's Grading Ordinance requires erosion and sediment control on every active grading site during the rainy…

San Diego Municipal Code Chapter 14, Article 2, Division 1 governs grading permits. Any cut or fill more than 200 cubic…

Construction projects with land disturbance in unincorporated San Diego County must install and maintain erosion…

San Francisco governs grading through Building Code Appendix J, adopted from the CBC with local amendments. Its Section…

Developers and contractors must submit a Storm Water Pollution Prevention Plan before getting a building permit or…

San Jose requires a grading permit or a director-approved notice of exemption before any excavation or fill work, per…

Grading permits in San Leandro require a civil-engineer-prepared erosion, sedimentation, and drainage control plan…

Cut and fill slopes on graded sites in San Luis Obispo County must be protected with approved BMPs, and no grading or…

San Marcos requires an Interim Erosion Control Plan with every grading permit application under Municipal Code Section…

Grading and construction sites in unincorporated San Mateo County must keep BMPs in place to stop erosion and sediment…

San Rafael caps graded slopes at 2:1 and retaining walls at 8 feet for new subdivisions, and requires an erosion…

San Ramon requires an approved erosion control system on every active grading site before the October 15 to April 15…

Santa Ana requires a grading permit under Municipal Code § 8-183, which amends Appendix J, Section J103.2 of the…

Any grading project in unincorporated Santa Barbara County must have an approved erosion and sediment control plan, or…

Santa Clara Municipal Code § 13.20.050 requires every construction site owner and operator to run erosion, sediment…

Grading or drainage alteration on unincorporated Santa Clara County land needs a county Grading Permit once cuts or…

Santa Clarita requires proof of a filed stormwater Notice of Intent and a completed Stormwater Pollution Prevention…

Santa Maria's storm water ordinance requires anyone doing grading, paving, concrete work, or landscaping to implement…

Santa Monica's floodplain regulations restrict or prohibit filling, grading, and other development that could increase…

Santa Rosa requires every subdivision to be graded and improved with erosion control that prevents sedimentation or…

Shasta County Code Section 18.10.190 requires anyone who owns or operates a construction site inside the county's MS4…

Simi Valley requires a Stormwater Pollution Control Plan for any construction site before a grading, building, or…

Solano County requires a grading and drainage permit before any grading, filling, excavating or vegetation clearing…

The City of Sonoma requires an erosion and sediment control plan for every grading permit application, prepared by a…

Unincorporated Sonoma County requires a construction grading permit before any cut, fill, or land-disturbing work over…

South Gate won't issue a grading, building, or demolition permit for a one-acre-plus disturbed site until the applicant…

Stanislaus County requires a county-approved drainage plan before it issues a building permit for commercial…

Any Stockton construction project that disturbs the soil needs a grading and erosion control permit from the Community…

Every construction site in Sunnyvale must run effective erosion, sediment and runoff controls through all phases of…

Any grading in unincorporated Tehama County above set thresholds, cubic yardage, disturbed area, or proximity to a…

Every construction and grading project in Temecula must control its runoff under Chapter 18.18 of the Municipal Code…

Thousand Oaks requires a City-issued grading permit before anyone excavates, fills, or relocates earth on a property…

Tracy requires erosion and sediment controls on any disturbed, unvegetated construction site during the rainy season…

Tulare County requires a grading permit before excavation, fill, or dredging on unincorporated land, under Ordinance…

Turlock requires a grading permit with an erosion and sediment control plan before any land-disturbing activity over…

Union City requires a permit before any grading, filling, excavation or land-disturbing activity, with drainage…

Upland regulates grading, excavation, and fill under Chapter 15.52 of the Municipal Code, requiring a permit from the…

Vacaville regulates erosion and sediment control through Chapter 14.19's Grading, Erosion, and Sediment Control…

Vallejo requires a grading permit under Municipal Code Chapter 12.40 before any excavation or fill, and construction…

Ventura caps rainy-season grading and requires erosion control devices under Municipal Code Section 12.215.030(L)…

Grading in unincorporated Ventura County's coastal zone requires a Coastal Development Permit, and applicants must…

Every construction project in Victorville, regardless of size, needs an approved erosion and sediment control plan…

Vista requires a grading permit for most land-disturbance work and holds every permittee to Municipal Code Chapter…

West Covina regulates construction-site grading and erosion control by adopting Los Angeles County's grading code…

West Sacramento requires a grading permit from the city manager before any excavation or fill work, with engineered…

Whittier requires any construction project disturbing one acre or more of soil by clearing, grading or excavating to…

Yolo County Code Sec. 10-9.303(a) requires anyone doing construction work under a building permit to implement Best…

Yuba City requires anyone doing ground-disturbing work to install best management practices that stop sediment and…

Unincorporated Yuba County requires a grading permit for any disturbance over one acre, or 2,500-plus square feet of…

The California Coastal Act, Public Resources Code sections 30000 through 30900, requires Coastal Development Permits…

El Cajon is located approximately 15 miles inland from the Pacific coast and is not within the California Coastal Zone…

Not applicable to Burbank. The city is an inland community in the San Fernando Valley with no coastal zone. California…

While Chula Vista is not directly on the ocean, the city borders San Diego Bay. The Bayfront area is undergoing major…

Coastal development rules do not apply to Clovis. Clovis is an inland Central Valley city in Fresno County, roughly 170…

Compton is an inland city approximately 12 miles from the coast. California Coastal Commission regulations do not…

Downey is an inland city approximately 12 miles from the coast and is not within the California Coastal Commission's…

El Monte is an inland San Gabriel Valley city approximately 25 miles from the Pacific Ocean and is NOT within the…

Inland city (~18 mi from coast), not in Coastal Zone. No CDP required. Has environmental protections for habitats…

The California Coastal Act does not apply in Fresno County. Fresno County is inland in the San Joaquin Valley with no…

Garden Grove is an inland city in Orange County and is not within the California Coastal Zone. The California Coastal…

Glendale is an inland city with no coastal zone. California Coastal Commission regulations do not apply. No coastal…

Not applicable to Inglewood. The city is an inland community approximately 3 miles from the coast. California Coastal…

Long Beach has extensive coastal zone regulated by the California Coastal Commission. Development in the coastal zone…

Properties in the California Coastal Zone (Venice, San Pedro, Pacific Palisades, etc.) require a Coastal Development…

Several unincorporated LA County areas fall within the California Coastal Zone, including communities near Malibu and…

Marin County's coastal areas are regulated by the Local Coastal Program (LCP) Implementation Plan, codified in Title 20…

Any development in the Monterey County Coastal Zone requires a Coastal Development Permit (CDP) under MCC Title 20…

The City of Orange is an inland community located approximately 10 miles from the Pacific coast and is not within the…

Development within the coastal zone of unincorporated Orange County requires a Coastal Development Permit (CDP) under…

Pasadena is an inland city approximately 15 miles from the coast. California Coastal Commission regulations do not…

Pomona is an inland city approximately 30 miles from the coast. Coastal development regulations and the California…

Sacramento is an inland city located approximately 80 miles from the Pacific Coast and is not within the California…

Salinas regulates development in coastal zones through setback requirements, habitat protections, and public access…

Development in the unincorporated coastal zone of San Diego County requires a Coastal Development Permit per the…

Development along San Francisco's Bay and Ocean shorelines is subject to oversight by the San Francisco Bay…

San Jose is an inland city located at the southern end of San Francisco Bay and is not within the California Coastal…

Coastal development in unincorporated SLO County is governed by Title 23 (Coastal Zone Land Use Ordinance) and the…

San Mateo County administers its own certified Local Coastal Program (LCP) and issues Coastal Development Permits…

Santa Barbara County has roughly 110 miles of Pacific coastline (the Gaviota Coast, Refugio, El Capitan, Goleta, Hope…

Santa Clarita is an inland city with no coastal zone. Coastal development regulations do not apply. The city is…

Most development in Santa Cruz County's Coastal Zone (extending roughly five miles inland from the Pacific along the…

Torrance has a Coastal Zone area near Torrance Beach. Development in the Coastal Zone requires a Coastal Development…

Tuolumne County is an inland Sierra Nevada foothill county with no coastline. The California Coastal Act and Coastal…

Vallejo requires public access to the shoreline for development along San Pablo Bay, the Napa River, Mare Island…

Unincorporated Ventura County areas within the California Coastal Zone require Coastal Development Permits under the…

Government Code sections 65302 and 65962, together with Water Code section 8401 and the State Building Code Chapter 16…

Bakersfield's FP-P floodplain primary zone bans human habitation and nearly all construction along natural streambeds…

Grading, excavation, and fill are prohibited in designated floodways in unincorporated LA County unless a…

Any development or construction within Santa Monica's designated special flood hazard areas requires a floodplain…

Butte County's Chapter 26, Article IV (Flood Hazard Prevention) requires a development permit before building in mapped…

Building or developing anywhere in Carlsbad's mapped special flood hazard areas requires a special use permit on top of…

Chico bars any development in a special flood hazard area that doesn't meet the city's adopted floodplain standards…

Any construction, alteration or encroachment within a Chino special flood hazard area needs prior planning commission…

Unincorporated Colusa County applies a dedicated Flood Management (F-M) zoning classification, under Zoning Code…

Corona requires a development permit before any construction or land alteration begins inside an area of special flood…

Costa Mesa applies extra floodway and floodplain rules to any property within a FEMA-mapped flood hazard area on the…

Dublin, Alameda County, regulates all development in FEMA flood hazard areas under Chapter 7.24 of the Municipal Code…

Elk Grove requires a floodplain development permit under EGMC Section 16.50.050 before any construction begins within a…

Anyone building or developing land inside Fairfield's mapped special flood hazard area must get a floodplain…

Any construction inside Folsom's mapped special flood hazard area needs a development permit before work begins, and…

Garden Grove requires a development permit before any construction begins in an area of special flood hazard, and…

A city development permit is required before any construction or land alteration in a FEMA-mapped special flood hazard…

Hercules regulates all development within FEMA-designated special flood hazard areas under Chapter 7 of the Municipal…

Irvine requires a development permit before any construction, fill, grading, or other development begins within a…

All of Isleton sits within FEMA Special Flood Hazard Area designations and is protected by Delta levees. Senate Bill 5…

Unincorporated Kern County requires a development permit before any construction, grading, or land alteration in a…

Unincorporated Madera County requires a development permit, issued by the county floodplain administrator, before any…

New construction and substantial improvements within Marin County's mapped special flood hazard areas must have the…

Any construction or development in a Mendocino County special flood hazard area needs a development permit from the…

Any construction, filling, grading or other development within Merced's mapped special flood hazard areas requires a…

Any construction, grading, filling, or other development inside a special flood hazard area in Modesto requires a…

Any construction or land alteration inside a Moreno Valley special flood hazard area requires a development permit…

Newport Beach requires elevation or floodproofing for all new construction and substantial improvements inside FEMA…

Ontario requires a development permit before any construction or development begins in an area of special flood hazard…

Oxnard requires a development permit before any construction, fill, or land alteration in a mapped area of special…

Petaluma zones its mapped Special Flood Hazard Area into two districts under Implementing Zoning Ordinance Chapter 6…

Rancho Cordova requires a floodplain development permit before any grading, filling, or construction in a mapped flood…

Redding's 'FP' Floodplain Overlay District, adopted to keep the city eligible for the National Flood Insurance Program…

Rialto requires a development permit before any construction or other development begins in an area of special flood…

Riverside regulates all development within FEMA-mapped special flood hazard areas under RMC Chapter 16.18, restricting…

Sacramento adopts FEMA's flood insurance study and flood insurance rate maps by reference and applies Chapter 15.104 to…

Any development inside a San Bernardino flood hazard area needs a floodplain development permit from the City Engineer…

Development inside a FEMA Special Flood Hazard Area in San Diego must follow strict floodway and flood-fringe…

San Leandro requires a development permit before any construction or land alteration in a mapped special flood hazard…

San Ramon regulates all construction in FEMA-mapped special flood hazard areas under Municipal Code Chapter C4-IV. A…

Santa Clarita requires a development permit before any construction, fill, grading or manufactured home placement in a…

Any building, zoning, use, or grading permit application in unincorporated Solano County gets checked against FEMA's…

Anyone planning development in a Stanislaus County flood hazard area needs a floodplain development permit before work…

In any FEMA-designated special flood hazard area of Thousand Oaks, no structure or land can be built, extended…

Tracy Municipal Code Chapter 9.52 requires a development permit before any construction or development begins in a…

Vallejo requires full compliance with its floodplain management chapter before any new construction, relocation, or…

Ventura requires a flood area development permit before any construction or development starts in a mapped special…

Any construction or land-disturbing work inside a Victorville special flood hazard area needs a development permit from…

Any construction or development in Visalia's designated flood hazard areas requires a development permit, and new…

Westminster requires a separate development permit, on top of any building or grading permit, before anyone builds or…

No structure or land within Whittier's mapped special flood hazard areas may be built, altered, extended or converted…

No structure or land in a Yuba City area of special flood hazard can be built, extended, converted, or altered without…

Any development in an Alameda flood hazard area needs a permit from the Floodplain Administrator before work starts, on…

Development in FEMA-mapped flood hazard areas of unincorporated Alameda County must meet the county's Floodplain…

Most of Altadena is in FEMA Flood Zone X (minimal hazard), but the area along Eaton Wash, the Arroyo Seco tributaries…

Anaheim requires a development permit before any construction, grading, fill, or mobile home placement in a mapped area…

Antioch requires a development permit before any construction or land alteration begins within a mapped area of special…

Any construction or development inside Apple Valley's mapped areas of special flood hazard requires a Development…

Baldwin Park requires a development permit review before any grading, filling or construction in a mapped floodplain…

Bellflower regulates construction within FEMA-mapped special flood hazard areas under its own Floodplain Management…

Berkeley's Flood Zone Development Ordinance bars new construction, land alteration, or extension of any structure…

Portions of Brentwood lie within FEMA-designated Special Flood Hazard Areas (SFHAs), particularly along Marsh Creek…

In FEMA-mapped Special Flood Hazard Areas, Buena Park requires new construction and substantial improvements to be…

Anyone building or developing within a FEMA-mapped area of special flood hazard in unincorporated Calaveras County must…

Camarillo requires a flood area development permit before any construction begins in a FEMA special flood hazard area…

Carson requires a development permit for construction in FEMA-mapped flood-prone areas, based on Flood Insurance Rate…

Any construction or land-disturbing development within a FEMA-mapped special flood hazard area in Ceres requires a…

Any construction or land change within a Chino Hills special flood hazard area needs a development permit before work…

Chula Vista requires a permit before any construction, enlargement, or development begins inside a Special Flood Hazard…

Portions of Citrus Heights lie within FEMA flood zones along Arcade Creek, Cripple Creek, and their tributaries…

Clovis Municipal Code Chapter 8.12 requires a development permit before any construction, grading, or manufactured home…

Any construction or land-disturbing development within Compton's FEMA-mapped AR Zone, an area that lost its accredited…

Any construction, grading, or development within a mapped special flood hazard area in unincorporated Contra Costa…

A development permit is required before any construction, grading, or placement of manufactured homes within…

Any construction, filling, grading, or excavation inside a Davis area of special flood hazard needs a development…

Any new construction, development, or substantial improvement inside a Downey special flood hazard area needs a…

Eastvale requires a development permit before any construction, grading, or other development in a mapped special flood…

El Cajon requires a development permit before any construction begins in a FEMA-mapped special flood hazard area, with…

El Dorado County bars new residential construction in a mapped flood zone unless the lowest floor sits at or above the…

Any construction, grading, or manufactured home placement within Escondido's mapped special flood hazard areas needs a…

Any construction or development within a FEMA-mapped special flood hazard area in Fontana needs a flood zone permit…

Fremont regulates development in FEMA Special Flood Hazard Areas along Alameda Creek and San Francisco Bay, requiring…

Fresno requires a building permit before any construction, fill, or alteration begins within a mapped area of special…

Fresno County requires a development permit before any construction, fill, grading or manufactured home placement…

Fullerton requires a permit before any construction or development proceeds within a mapped area of special flood…

Glendale participates in the NFIP and regulates development in FEMA-designated flood zones. Properties near the Verdugo…

In unincorporated Glenn County, no one may build, fill, or alter land within a mapped area of special flood hazard…

Anyone building, filling, or altering land within Hanford's mapped special flood hazard areas must first obtain a…

Hawthorne requires a development permit for any construction in a flood-prone area identified on FEMA's Flood Insurance…

Hayward requires a Development Permit before any construction begins in a FEMA-mapped special flood hazard area, with…

Hesperia requires a floodplain development permit before any construction begins in a mapped special flood hazard area…

Huntington Beach's Building Code bars the Building Official from waiving any flood-hazard construction requirement…

Imperial County requires a development permit before any construction in a FEMA-mapped special flood hazard area…

Any construction or development, including manufactured homes, within an Indio special flood hazard area requires a…

Any construction, grading, or land alteration within an area of special flood hazard in Inglewood requires a City…

Any construction, fill or alteration inside a FEMA-mapped special flood hazard area in unincorporated Kings County must…

Any development or placement of structures inside a Special Flood Hazard Area in unincorporated Lake County needs a…

Lake Forest requires a floodplain development permit before any construction in a FEMA-mapped special flood hazard…

Any construction or development in Lakewood's FEMA-mapped AR flood hazard zone needs a floodplain development permit…

Lancaster regulates construction inside FEMA-mapped areas of special flood hazard under Municipal Code Article III of…

Livermore Municipal Code Chapter 16.12 requires a development permit before any construction or land alteration within…

Lodi requires a development permit before any construction, fill, or grading begins within a mapped special flood…

Long Beach Municipal Code § 18.40.280 amends California Building Code § 1612.3 to adopt the City's own flood hazard…

Los Banos requires a development permit for any construction, grading, or manufactured home placement within areas the…

Madera regulates building and land alteration inside FEMA-mapped flood hazard areas under Municipal Code Chapter 3-3…

Manteca adopts FEMA's flood insurance maps citywide and requires a development permit before any building, fill, or…

Menifee Chapter 4.2 regulates construction in areas of special flood hazard mapped on FEMA's 1980 Flood Insurance…

Any construction, fill, or land-disturbing activity within Merced County's mapped special flood hazard areas needs a…

Mission Viejo requires a development permit before any construction, filling, grading or structure placement in a…

Any construction or development within a designated area of special flood hazard in Monterey needs a Development Permit…

Development in Monterey County's Special Flood Hazard Areas, the 100-year floodplain shown on FEMA's Flood Insurance…

Moorpark requires a development permit before any construction, filling, grading, or dredging begins inside a…

Mountain View requires a floodplain development permit from the floodplain administrator before any construction…

Murrieta requires a development permit before any construction, fill, or land alteration begins within a mapped area of…

Norwalk requires a development permit before any construction, grading, filling or manufactured-home placement within a…

Oakland will not issue a grading permit for a site in a designated Flood Hazard Area unless the grading plan includes…

Any construction or development within an Oceanside special flood hazard area needs a development permit before work…

Portions of the City of Orange are within FEMA-designated Special Flood Hazard Areas, particularly along Santiago…

Unincorporated Orange County requires a permit for any construction in a mapped Special Flood Hazard Area, and new…

The City of Pacifica regulates construction in special flood hazard areas under its Flood Damage Prevention chapter…

Anyone building or developing within a Palm Springs area of special flood hazard must first obtain an area of special…

Any construction or development within a mapped Palmdale special flood hazard area needs a development permit from the…

Pasadena's Floodplain Management Regulations apply to every area the floodplain administrator identifies as flood-prone…

Perris requires a development permit before any construction, grading, fill, or manufactured home placement within a…

Placer County participates in the National Flood Insurance Program (NFIP) and enforces a Flood Damage Prevention…

Pleasanton requires a development permit before any construction, filling, grading or land alteration in an area of…

Anyone building, filling, or altering land within a mapped area of special flood hazard in Rancho Cucamonga needs a…

Redlands requires a floodplain development permit before any construction begins in a mapped Special Flood Hazard Area…

Any construction or development, including manufactured homes, inside a FEMA-mapped area of special flood hazard…

Redwood City Code Chapter 41 applies to every area of special flood hazard mapped on the FEMA flood insurance rate…

Ridgecrest requires a development permit before any construction or grading begins within a mapped special flood…

Riverside County requires a floodplain development permit before any structure, grading, or substantial improvement in…

Rohnert Park regulates development in every area of special flood hazard mapped by FEMA under Chapter 15.48 of its…

Any construction or development within a mapped area of special flood hazard in Roseville requires a floodplain…

Sacramento County requires a Floodplain Management Permit before any new construction, substantial improvement, or land…

Salinas requires a floodplain development permit before any construction, fill, grading, or land-disturbing work begins…

Unincorporated San Bernardino County regulates construction in FEMA flood hazard zones through an FP Overlay, requiring…

San Clemente regulates construction in flood hazard areas under Chapter 15.76, Flood Damage Prevention. A development…

In unincorporated San Diego County, new construction in a mapped special flood hazard area needs a development permit…

San Francisco requires a permit before building in any FEMA-mapped floodplain, with construction standards enforced by…

San Joaquin County participates in FEMA's National Flood Insurance Program and maintains a CRS Class 7 rating…

Any construction or development in a San Jose special flood hazard area needs a development permit from the floodplain…

San Luis Obispo County applies a Flood Hazard (FH) combining designation to parcels facing 100-year flood or coastal…

San Marcos regulates every building, fill, and grading activity inside FEMA-mapped special flood hazard areas under…

Unincorporated San Mateo County bars grading, filling, new construction or any other development in a mapped Area of…

San Rafael requires a floodplain development permit before any construction begins within FEMA-mapped special flood…

Parts of Sanger lie within FEMA flood zones along the Kings River. Development in Special Flood Hazard Areas must meet…

Any construction or development, including manufactured homes, inside a Santa Ana special flood hazard area needs a…

Building, filling, grading or any other development on an unincorporated-area parcel inside a FEMA-mapped Special Flood…

Santa Clara participates in the NFIP; properties in FEMA AE/AH zones near Guadalupe and San Tomas creeks need elevation…

Building, filling, or grading anywhere within a mapped special flood hazard area of unincorporated Santa Clara County…

Santa Cruz County requires a floodplain development permit for any development activity in a mapped flood hazard area…

Any construction or development inside a mapped special flood hazard or mudslide area in Santa Maria needs a…

Any construction, land alteration, or development inside Santa Rosa's FEMA-mapped special flood hazard areas needs a…

Any construction inside Shasta County's Restrictive Flood (F-2) District has to be anchored against flotation…

Portions of Simi Valley fall within FEMA-designated flood zones, primarily along the Arroyo Simi and its tributaries…

The City of Sonoma requires a floodplain development permit before any grading, building, or site work begins in a…

Unincorporated Sonoma County requires a floodplain development permit and elevates new residential construction at…

South Gate requires a development permit for any construction or land alteration within a FEMA-mapped special flood…

Any construction or development within a FEMA-mapped special flood hazard area in Stockton needs a development permit…

Sunnyvale regulates every subdivision, fill, grading, utility installation, and building project inside a mapped flood…

Before any construction or development begins in a special flood hazard area of unincorporated Tehama County…

Any construction, fill, or other development within Temecula's mapped special flood hazard areas, flood-related erosion…

Unincorporated Tulare County requires a Building Permit before any construction or development begins in a special…

Union City requires a development permit before any construction, filling, or grading in a mapped special flood hazard…

Upland regulates construction in FEMA-designated special flood hazard areas under Chapter 15.56, Floodplain Management…

Any construction or development within a mapped area of special flood hazard in Vacaville requires a development permit…

Flood zone regulations in unincorporated Ventura County are governed by the county's floodplain management ordinance…

Vista requires a development permit before any construction, grading or manufactured home placement begins within a…

West Covina regulates construction inside FEMA-mapped special flood hazard areas under Chapter 9, Article III. No…

WSMC Title 18 (Floodplain Management Regulations) applies to all areas of special flood hazard identified by FEMA…

Any construction or development inside a Yolo County special flood hazard area needs a Development Permit before work…

Any construction, fill, grading, or manufactured-home placement within a mapped special flood hazard area of…

Los Angeles adopts FEMA's Flood Insurance Rate Map and the 2012 Flood Insurance Study for the City of Los Angeles as…

Antioch's FP-1 Floodway Combining District bars nearly all new structures, but public and private docks, wharves…

Building or maintaining a private wharf, pier, float, bulkhead, seawall or similar structure anywhere in the Long Beach…

In unincorporated Los Angeles County, marinas, docks, piers, and boat launches need a Conditional Use Permit in the…

Marinas, boat docks, and launches in unincorporated Merced County's agricultural zones need at minimum an…

Newport Beach requires a harbor development permit before anyone builds, modifies or maintains a private dock, pier or…

Docking a vessel next to a vacant lot in Oxnard's inland waterway requires a city-issued docking permit under Code §…

Building, altering, or replacing a pier, floating dock, or other structure in the Lake Tahoe shorezone within…

Placing a private buoy or mooring anywhere in King Harbor's waters requires a permit from the Harbor Master first. The…

Redwood City Code Section 44.16 bars building any wharf, pier, landing, bulkhead or other permanent structure in the…

A boat dock or marina anywhere in Sacramento's F (Flood) zone along the Sacramento or American Rivers needs a…

Building or placing a pier, dock, wall, bulkhead or breakwater on San Rafael's tidelands requires a City tidelands…

In Tehama County's PF Primary Floodplain district, boat ramps and docks need a discretionary use permit from the…

Alameda requires a Building Official permit before anyone builds, alters, repairs or demolishes a floating home moorage…

Berkeley Municipal Code Chapter 6.20 governs berth permits at the City-owned Berkeley Marina on San Francisco Bay…

Contra Costa County's Electrical Code sets a minimum lighting standard for boat docks: at least two foot-candles of…

A private boat dock's permit requirement in unincorporated Kern County turns on the parcel's zoning district. Zoning…

Anyone building or altering a pier, dock, or boat ramp in Clear Lake's foreshore or nearshore must first get an…

Marin County requires a written encroachment permit from the Department of Public Works before anyone installs a pier…

Storing a dinghy or other small vessel on a City-owned dock in Monterey Harbor requires a permit from the Harbormaster…

Building, extending or repairing any pier, slip, wharf, dock or other harbor structure inside Oakland's designated Port…

Any vessel using an Oceanside Harbor slip beyond a dinghy already sharing a berthed vessel's space must carry a…

A written County permit is required to build, extend, or alter any pier, dock, piling, bulkhead, or seawall in a County…

Berthing, mooring or anchoring a vessel in Petaluma's turning basin, waterways or municipal marina requires a berthing…

Private boat docks on Delta waterways are allowed by right only if they meet strict size and siting limits; docks that…

Placing, erecting, or installing a boat mooring anywhere in Mission Bay Park requires a permit issued by the Park and…

San Luis Obispo County requires a planning department permit before anyone builds a dock, marina or similar floating…

Ventura's Floating Piers chapter, Municipal Code Section 12.140.060, sets material and structural standards for private…

Building or extending any float, bulkhead, seawall, or other structure, or doing any dredging or excavating, in Channel…

Berthing a vessel at West Sacramento's Etenesh Zeleke Public Boat Dock in River Walk Park requires a city berthing…

A dock in Yolo County only counts as a 'Permitted Dock' under Sec. 9-6.02(F) if it has received a County Use Permit or…

Indio mandates a 100-foot defensible-space clearance around buildings in wildfire hazard zones, split into three…

Chino Hills' locally amended Wildland-Urban Interface Code requires owners of buildings in State Responsibility Areas…

Folsom's fire code amendment requires a 30-foot firebreak around structures adjoining grass- or brush-covered land…

Fresno County requires owners of specific parcels along the San Joaquin River bluffs between Highways 99 and 41 to…

New construction in Fullerton's high or very high fire hazard severity zones must follow a Fire Department-approved…

Improved parcels in unincorporated Lake County must maintain 30 feet of defensible space around every building, and the…

New buildings in Lake Forest's mapped wildfire risk areas need an OCFA-approved fuel modification plan before…

Los Angeles County's defensible space rules require specific vegetation management within 100 feet of structures on or…

Moreno Valley requires a 100-foot defensible space around buildings in its wildland-urban interface area, broken into…

Newport Beach requires an approved fuel modification plan before issuing a building permit for property in a Fire…

Every property owner in Rancho Cucamonga must clear fire hazard vegetation from their land under Municipal Code Chapter…

Redlands requires habitable buildings in its High and Very High Fire Hazard Severity Zones to maintain three defensible…

San Marcos requires a 150-foot fuel modification zone around buildings in hazardous fire areas under Municipal Code…

Every improved parcel in Temecula must maintain 100 feet of defensible space around every structure by clearing…

Anaheim's Very High Fire Hazard Severity Zone, mapped by CAL FIRE under Municipal Code Section 16.40.020, and its…

In Bakersfield's HD (Hillside Development) combining zone, buildings must keep a 30-foot firebreak clear of flammable…

Baldwin Park requires landscape design plans for projects in fire-prone areas to address fire safety and build…

Buena Park requires anyone using welding, cutting, or grinding equipment in or near Wildfire Risk Areas to clear…

Butte County Code Section 38A-6 requires every parcel in the unincorporated area to maintain three defensible space…

Before Carlsbad will grant final approval on a building permit, Municipal Code Section 17.06.020 requires the property…

Chino's Fire Code requires new wildland-urban-interface development to maintain a minimum 100-foot fuel modification…

Unincorporated Colusa County's Zoning Code ties its landscaping standards to state defensible-space law. Section…

Corona lets owners of homes in a high or very-high Fire Hazard Severity Zone request a Fire Department defensible-space…

In Cupertino's wildland urban interface areas designated under Chapter 16.74, the Landscape Ordinance requires plants…

Eastvale requires a 100-foot firebreak of cleared, combustible-free ground around any building located in or adjoining…

Under the county's Good Neighbor and Neighborhood Protection Policy, Section 8.09.070(D)(5), if hazardous vegetation on…

Fresno Municipal Code § 10-1510 requires owners of parcels along the San Joaquin River bluffs to maintain a 30-foot…

Garden Grove's Fire Code amendments require new construction next to hazardous brush to meet Orange County Fire…

Hayward's Wildland-Urban Interface Code requires fire-resistant construction in the fire-prone area east of Mission…

In Hemet's wildland interface zones, property owners must clear and thin native vegetation around structures to…

New construction next to hazardous combustible vegetation in Irvine must meet a fuel modification standard tied to…

For landscape projects in fire-prone parts of Lancaster, Section 8.50.090(A)(1)(j) requires the design plan to address…

Properties in or near Very High Fire Hazard Severity Zones must maintain 100 feet of defensible space around…

Los Banos requires landscape design plans for projects in fire-prone areas to address fire safety, including a…

Developments approved under Madera County's conditional-use zoning chapter within state fire-responsibility areas must…

Menifee's Wildland-Urban Interface Code requires every owner of a building in a Fire Hazard Severity Zone to keep a…

New construction adjoining land with hazardous combustible vegetation in Mission Viejo must meet a fuel modification…

Moorpark hillside parcels in Ventura County Fire Protection District wildfire zones must maintain 100-foot defensible…

Palm Springs' Wildland-Urban Interface Code, adopted at Municipal Code Section 8.04.090, requires hazardous vegetation…

Pasadena's local Flammable Vegetation ordinance bans combustible weeds, trees and brush within 100 feet of any…

Perris's local amendments to the 2025 California Fire Code require every property owner or occupant to cut down and…

Petaluma requires anyone who owns, leases or controls property in an area subject to defensible space rules to maintain…

Rancho Cordova requires a 30-foot firebreak around every structure: Municipal Code Section 17.12.060 orders dry grass…

Properties near Mt. Rubidoux, Sycamore Canyon, and other Riverside hillside zones must clear flammable vegetation…

Riverside County enforces 100-foot defensible space around structures in State Responsibility Areas and Local…

Rohnert Park requires anyone who owns, leases or controls property in an area subject to defensible space rules to…

New buildings on parcels one acre or larger in unincorporated San Benito County must sit back 30 feet from property…

Properties in San Bernardino Mountain WUI zones must clear 100 feet of defensible space around structures. SBCFPD…

San Clemente enforces defensible space and fire-spread rules through its Wildland-Urban Interface Code, adopted from…

California Public Resources Code §4291 requires 100 feet of defensible space around structures in wildland fire areas…

Unincorporated San Diego County requires a defensible space zone of up to 100 feet around every habitable building in…

San Jose properties in mapped Very High Fire Hazard Severity Zones, including Almaden Valley and Coyote Valley, must…

Santa Clarita parcels in LA County Fire Hazard Severity Zones must maintain 100 feet of defensible space under…

A Solano County vacation house rental in a High Fire Hazard Severity Zone can be approved only if defensible space…

The City of Sonoma requires anyone owning, leasing, or controlling property in areas that require defensible space to…

Any cabin, house, hotel, apiary, incinerator or other structure on or next to mountainous, forest or brush-covered land…

New buildings on unincorporated Tehama County parcels of one acre or more must sit at least 30 feet back from property…

Thousand Oaks parcels in state and local responsibility fire zones must maintain 100 feet of defensible space around…

Property owners in unincorporated Tuolumne County must maintain 100 feet of defensible space around all structures…

Twain Harte sits in a State Responsibility Area, so California Public Resources Code 4291 requires homeowners to…

New residential development within 200 feet of open space lands where wildfire is a threat must provide a 50-foot…

In fire hazard areas of the City of Ventura, Appendix J105.1 of the wildland-urban interface code requires a 30-foot…

West Covina's Fire Code amendments require every owner to clear flammable weeds, grass, and vegetation for 100 feet…

Landscape design plans for projects in fire-prone parts of West Sacramento must address fire safety, including the…

Westminster's Fire Code requires every new structure built next to land carrying hazardous combustible vegetation to…

Whittier's landscape design standards require a defensible space around buildings in fire-prone areas. Municipal Code…

New buildings in Yuba County's State Responsibility Areas must keep a 30-foot firebreak setback from property lines…

Properties in Oakland Hills Very High Fire Hazard Severity Zone must maintain 100 feet of defensible space, clearing…

Alhambra caps vehicle idling for mobile food vendors at five minutes per hour. Section 23.22.190(F)(7) states vendors…

Within the Apple Valley Commercial Specific Plan area, diesel delivery trucks cannot idle more than five minutes per…

Bellflower bans charter bus operators from leaving engines idling at licensed charter bus depots, one of the zoning…

Fontana caps diesel truck idling at large warehouse facilities to three minutes under Sec. 9-72(c), part of the…

Fremont caps construction equipment idling at 5 minutes citywide, per the state airborne toxics control measure, and…

Fresno requires loading docks next to commercial, office, or residential-adjacent sites to post signage capping truck…

Fullerton caps diesel truck idling at five minutes under FMC § 8.30.060, matching the state's 13 C.C.R. § 2485…

Hesperia limits how long parked commercial vehicles (26,000+ lb GVWR trucks and trailers) may idle in residential and…

Huntington Beach treats vehicle idling near homes between 10 p.m. and 7 a.m. as a noise violation. Within 200 feet of a…

Warehouse and logistics developments in Irvine must post anti-idling signs limiting heavy-duty truck engine idling to…

Marin County caps construction-equipment idling at five minutes on projects that trigger environmental review. Section…

Every commercial and industrial loading area in Moorpark must post at least one sign, minimum 12 by 18 inches, stating…

Moreno Valley caps engine idling at five minutes per stop under Municipal Code Chapter 12.50, covering diesel vehicles…

Oakland Municipal Code § 8.18.020(B) makes unnecessary idling of internal combustion engines a public nuisance, one of…

Oceanside bars trucks and other vehicles serving an agricultural operation from parking or idling on public streets…

In Perris's industrial zones, a warehouse or distribution center of 500,000 square feet or larger must wire every truck…

Placer County caps engine idling at five consecutive minutes for heavy diesel trucks and off-road diesel equipment…

Redlands warehouses and logistics distribution centers must post anti-idling signs enforcing a five-minute limit on…

Riverside caps truck idling at five minutes for any warehousing or distribution facility site under Municipal Code…

Sacramento City Code Chapter 8.116 caps engine idling for heavy trucks over 14,000 pounds GVWR, transport refrigeration…

San Bernardino County caps off-road diesel equipment idling at five minutes on unincorporated land use project sites…

Inside San Diego's designated Ballpark District, private motor coaches may not idle longer than fifteen minutes while…

San Francisco limits commercial vehicles, private buses and for-hire vehicles to five minutes of idling while parked on…

San Ramon bars delivery trucks from idling their engines while loading or unloading at a site's required off-street…

In the City of Sonoma, a commercial vehicle parked within 100 feet of a residential zoning district cannot idle its…

Stockton caps truck idling at three minutes at large logistics warehouses under Development Code Section 16.80.390. The…

Tulare County caps diesel-fueled commercial vehicle idling at 5.0 minutes at any location under Ordinance Code §…

Vacaville Municipal Code Section 10.20.020(Y) bars stopping, standing, or parking a commercial vehicle of 10,000 pounds…

Berkeley's only vehicle-idling limit sits inside its diagonal-parking rule: Municipal Code Section 14.40.060(B) caps…

In the Unique Agriculture (-UA) overlay zone that supports Butte County's farm-tour and agritourism operations, Butte…

Cars, trucks, motorcycles and towed equipment cannot idle in one spot off a public right-of-way for more than three…

Long Beach bans on-site idling for vehicles queuing at diesel fuel pumps under Municipal Code § 21.52.222.F, one of…

Murrieta's development code bars leaving construction equipment idling for long periods and requires exhaust-emission…

Yolo County caps engine idling at ten minutes for vehicles and equipment working in-channel under the Cache Creek Area…

Oakland declared a climate emergency in 2018 and adopted the 2030 Equitable Climate Action Plan (ECAP) targeting 56…

California Title 24 Building Energy Efficiency Standards mandate cool-roof reflectance values for new and re-roofed…

Corona requires new and substantially improved residential structures in a mapped flood hazard area to have their…

In Alameda County flood hazard areas, Dublin requires manufactured homes, accessory structures, and substantially…

In Garden Grove's Flood Hazard Overlay Zone, new residential construction must have its lowest floor built at or above…

New and substantially improved homes in Hercules flood hazard zones must have their lowest floor, including basement…

New homes and substantial improvements in Moreno Valley's mapped flood zones must have their lowest floor built at…

Inside Oakland's D-DT Sea Level Rise Combining Zone, Planning Code Section 17.101K.180 requires new principal buildings…

New residential construction in Redding's mapped flood zones must have its lowest floor at least one foot above the…

Any new home or substantial improvement in a San Leandro flood zone must sit at or above the base flood elevation, with…

New construction and substantial improvements in San Ramon's mapped flood zones must have the lowest floor at or above…

New homes and substantial improvements in Santa Clarita's mapped flood zones must have their lowest floor built at…

In special flood hazard areas, Yolo County's flood damage prevention ordinance requires new and substantially improved…

New buildings, substantial improvements, and subdivision lots inside an Alameda flood hazard area must be built to the…

New structures in the county's combining FF (flood fringe) zoning district must set their lowest floor at least one…

In Anaheim's mapped special flood hazard areas, new construction and substantially improved structures must raise the…

New construction and substantial improvements in Antioch's Zone AE and AH flood areas must have the lowest floor…

Apple Valley requires new construction and substantial improvements in a mapped A zone to elevate the lowest floor…

New construction and substantial improvements inside Bakersfield's mapped flood hazard areas must have their lowest…

New residential construction in Bellflower's mapped flood-hazard A zones must have its lowest floor, including any…

New and substantially improved buildings in Berkeley's mapped flood hazard zones must have their lowest floor built at…

Brentwood requires new and substantially improved residential structures in flood hazard areas to elevate the lowest…

In Buena Park's special flood hazard areas, new construction and substantial improvements must have the lowest floor…

In Butte County's mapped Special Flood Hazard Areas (Zones AE and AH), new residential structures and substantial…

New residential construction and substantial improvements in Calaveras County's mapped AE, AH and A1-30 flood zones…

New construction and substantial improvements in Camarillo's mapped flood hazard areas must have their lowest floor at…

New construction and substantial improvements in Carlsbad's special flood hazard areas must have the lowest floor…

In Carson's mapped flood zones, new and substantially improved residential buildings must have their lowest floor…

New homes in Ceres flood hazard areas must have their lowest floor built at or above the base flood elevation, with at…

Chico requires new and substantially improved buildings in special flood hazard areas to elevate the lowest floor at…

New construction in Chino's mapped flood hazard areas must have its lowest floor built at least one foot above the base…

New construction and substantial improvements inside a Chino Hills special flood hazard area must raise the lowest…

New residential construction and substantial improvements inside a Chula Vista Special Flood Hazard Area must set the…

In a Clovis special flood hazard area, Municipal Code Section 8.12.05(a)(3) ties the required lowest-floor elevation to…

Compton requires new construction in mapped flood hazard areas to elevate the lowest floor above the flood depth shown…

New construction and substantially improved buildings inside a Contra Costa County flood hazard area must sit above the…

Every new home or substantially improved structure in a Costa Mesa flood hazard area must have its lowest floor…

New and substantially improved residential structures in Cupertino's AE, AH, and A1-30 flood zones must have their…

Any new construction or substantial improvement inside Davis's mapped flood hazard areas must have its lowest floor…

New residential construction inside a Downey special flood hazard area must have its lowest floor, including any…

New and substantially improved residential buildings in an Eastvale flood hazard area must have their lowest floor…

New and substantially improved residential structures in El Cajon's A-zone flood areas must have their lowest floor at…

In Special Flood Hazard Areas, El Dorado County requires new and substantially improved residential structures to have…

New subdivisions and development in Elk Grove's special flood hazard areas must elevate the lowest finished floor at…

New construction in Escondido's mapped flood zones must have its lowest floor built at or above the base flood…

New construction and any 'substantial improvement' inside Fairfield's mapped flood hazard area must sit at least one…

In Folsom's mapped special flood hazard areas, new homes and substantial improvements must sit with their lowest floor…

New and substantially improved homes in Fontana's mapped flood zones must have the lowest floor, including any…

Fremont requires new construction and substantial improvements in special flood hazard areas to elevate the lowest…

New or substantially improved homes in a Fresno flood hazard area must have their lowest floor built to the elevation…

New construction and substantial improvements in a Fresno County flood hazard area have to elevate the lowest floor at…

New and substantially improved residential structures in a Fullerton special flood hazard area must set the lowest…

In unincorporated Glenn County, new and substantially improved structures built in a special flood hazard area must…

New and substantially improved buildings in Hanford's flood hazard areas must have their lowest floor built at or above…

Any new construction or substantial improvement, including manufactured homes, sited in a Hawthorne flood-prone area…

In Hayward's mapped flood hazard areas, Municipal Code Section 9-4.110(c) requires the lowest floor of new construction…

Hemet requires new and substantially improved buildings in mapped flood hazard areas to elevate the lowest floor to or…

New and substantially improved buildings in Hesperia's mapped flood zones must have their lowest floor built at or…

Huntington Beach requires new residential construction and substantial improvements in special flood hazard areas to…

New and substantially improved homes in Imperial County's mapped flood zones must have their lowest floor elevated at…

Indio requires new and substantially improved residential structures in AE, AH, and A1-30 flood zones to have their…

Irvine requires new residential construction and substantial improvements in a mapped flood hazard area to elevate the…

In unincorporated Kern County, new construction and substantial improvements in a special flood hazard area must have…

New and substantially improved buildings in Kings County's mapped flood hazard areas must have their lowest floor built…

Unincorporated Lake County requires the lowest floor of new residential construction in a mapped Special Flood Hazard…

Lake Forest requires new construction and substantial improvements in flood hazard zones to elevate the lowest floor at…

New residential construction in Lakewood's AR flood hazard zone must have its lowest floor, including any basement…

New construction and substantial improvements in a Lancaster special flood hazard area must have the lowest floor…

Livermore Municipal Code § 16.12.120(C) requires new residential construction and substantial improvements in special…

Lodi requires new and substantially improved residential structures in AE, AH, and A1-30 flood zones to elevate the…

Long Beach's amended Residential and Building Codes push construction above FEMA's base flood elevation, not merely to…

When a Los Angeles building site lacks a specified design flood elevation, LAMC § 91.5.322.1.4.1 lets the building…

In the unincorporated Santa Monica Mountains Coastal Zone, new residential construction in FEMA A, AE, or AH flood…

Los Banos ties its flood construction rules to the FEMA 'base flood,' the flood with a one percent annual chance of…

Unincorporated Madera County requires new and substantially improved residential structures in FEMA-mapped special…

New and substantially improved buildings in Manteca's flood hazard areas must have their lowest floor built to or above…

Any new construction or substantial improvement in Marin County's mapped special flood hazard areas must have its…

New or substantially improved residential buildings in a Mendocino County flood hazard area must have their lowest…

New or substantially improved residential structures in Menifee's special flood hazard areas must have their lowest…

New construction and substantial improvements in Merced's AE and AH flood zones must have the lowest floor, including…

New homes and substantially improved structures built in a Merced County flood hazard Zone A must set their lowest…

New construction and substantial improvements in a Mission Viejo flood hazard area must have the lowest floor…

New and substantially improved homes in a Modesto special flood hazard area must have the lowest floor elevated to or…

New construction and any substantial improvement in a Monterey flood hazard area must have its lowest floor, including…

Monterey County Code Section 16.16.050(C) requires new construction and substantial improvements in Special Flood…

New and substantially improved residential structures in Moorpark's flood zones must have the lowest floor at least two…

Mountain View treats building below the base flood elevation as an exception, not a default: it takes a rare variance…

New construction and substantial improvements in Murrieta's special flood hazard areas must have the lowest floor…

In Newport Beach flood hazard areas, new construction and substantial improvements must have the lowest floor elevated…

New construction and substantially improved buildings inside Norwalk's mapped flood hazard area must have their lowest…

New or substantially improved residential construction in Oceanside's flood zones must have its lowest floor, including…

In Ontario's special flood hazard areas, new construction and substantial improvements must have the lowest habitable…

Orange's Flood Damage Prevention chapter requires new, substantially improved or substantially damaged structures…

In unincorporated Orange County's FP Floodplain Overlay District, new construction and substantial improvements must…

In Oxnard's mapped Zone A and other special flood hazard zones, new construction and substantial improvements must set…

New and substantially improved residential structures in Pacifica's special flood hazard areas must have their lowest…

Palm Springs requires new and substantially improved homes in AE, AH and A1-30 flood zones to elevate the lowest floor…

Palmdale requires new residential construction and substantial improvements in mapped A and AE flood zones to have the…

Pasadena requires new construction and substantial improvements on flood-prone sites to be anchored against flotation…

New construction and substantial improvements to homes in Perris's mapped flood zones must have the lowest floor…

Petaluma requires new and substantially improved buildings in its floodplain to elevate the lowest floor at least 12…

In unincorporated Placer County, new construction and substantial improvements in a mapped special flood hazard area…

Pleasanton requires new construction and substantial improvements in a special flood hazard area to elevate the lowest…

Rancho Cordova requires new and substantially improved buildings in flood hazard areas to be elevated 1.5 feet above…

New and substantially improved homes in Rancho Cucamonga's flood zones must have their lowest floor, including any…

Redlands requires new residential construction and substantial improvements in a mapped special flood hazard area to…

New residential construction and substantial improvements in a mapped flood hazard zone must have the lowest floor…

Redwood City Code Section 41.18 requires new or substantially improved residential structures in any special flood…

New and substantially improved residential structures in Rialto's mapped flood zones must have their lowest floor…

New construction and substantially improved structures in Ridgecrest's mapped flood zones must have the lowest floor…

New and substantially improved residential buildings in a Riverside flood hazard zone must have their lowest floor…

In unincorporated special flood hazard areas, manufactured homes and pool equipment must sit at least one foot above…

New and substantially improved residential structures in Rohnert Park's mapped AE, AH and A1-30 flood zones must have…

Roseville requires two feet of freeboard: new or substantially improved residential buildings must have their lowest…

Sacramento requires new construction and substantial improvements in mapped flood zones to elevate the lowest floor at…

New and substantially improved homes in Sacramento County flood zones must raise the lowest floor 1.5 feet above base…

New construction and substantial improvements in a Salinas special flood hazard area must have their lowest floor…

In unincorporated San Benito County, new floodplain construction must be certified at least one foot above the 100-year…

When a San Bernardino property sits in an approximate Zone A flood hazard area with no FEMA base flood elevation on…

New construction and substantial improvements inside San Bernardino County's mapped floodplains must raise their lowest…

San Clemente requires new residential construction in a special flood hazard area to elevate the lowest floor…

New construction and substantial improvements in Special Flood Hazard Areas must elevate the lowest floor at least 2…

In unincorporated San Diego County, new and substantially improved residential structures in special flood hazard areas…

San Francisco requires new construction and substantial improvements in FEMA-mapped flood-prone areas to meet the…

San Jose requires new construction and substantial improvements inside FEMA-mapped special flood hazard areas to…

San Luis Obispo County requires subdivision applicants to identify Special Flood Hazard Areas and Base Flood Elevations…

San Marcos requires new and substantially improved residential structures in FEMA flood zones AE, AH, and A1-30 to…

Unincorporated San Mateo County requires the lowest floor of any new or substantially improved structure in an Area of…

New and substantially improved buildings in San Rafael's mapped flood zones must elevate the lowest floor at least one…

Santa Ana defines base flood elevation (BFE) as the water surface height shown on the FIRM for a flood with a 1% annual…

New construction and substantially improved buildings in a Santa Barbara County special flood hazard area must have the…

Santa Clara adopts CCR Title 24, Part 2, Appendix G for flood-resistant construction in flood hazard areas and lets…

New and substantially improved homes in unincorporated Santa Clara County's flood zones must have their lowest floor…

In unincorporated Santa Cruz County, new and substantially improved buildings in mapped flood hazard areas must have…

New construction and substantial improvements in a Santa Maria special flood hazard area must have the lowest floor…

New construction and substantial improvements in Santa Rosa's flood hazard areas must elevate the lowest floor…

In Shasta County's F-2 floodplain combining district, new residential structures and substantial improvements must sit…

New homes in Simi Valley's mapped flood hazard zones must have their lowest floor built at least one foot above the…

New homes and substantial improvements built inside a Solano County special flood hazard area must sit at least one…

Where a City of Sonoma property's FIRM does not show a base flood elevation, the floodplain administrator can require…

In unincorporated Sonoma County, new homes and substantial remodels inside a mapped special flood hazard area must…

New and substantially improved residential buildings in South Gate's mapped flood zones must have their lowest floor…

In Stanislaus County flood hazard areas, accessory structures classified as Utility and Miscellaneous Group U, sheds…

Stockton requires new and substantially improved homes in AE, AH, and A1-30 flood zones to elevate the lowest floor and…

Sunnyvale's floodplain code adds a one-foot freeboard margin above FEMA's base flood elevation for the structures it…

In the unincorporated area of Tehama County, California, new and substantially improved homes in mapped flood zones…

Temecula requires the pad of every new or substantially improved building in a mapped special flood hazard area to sit…

In FEMA-mapped special flood hazard areas, Thousand Oaks requires the lowest floor of new construction and substantial…

Section 9.52.150 of the Tracy Municipal Code requires new construction and substantial improvements in the City's…

New construction and substantial improvements in unincorporated Tulare County flood zones must have the lowest floor…

Union City requires new construction and substantial improvements in flood hazard areas to elevate the lowest floor to…

Vacaville requires new residential construction and substantial improvements in a mapped flood zone to have the lowest…

Vallejo requires new and substantially improved residential structures in a mapped flood zone to elevate their lowest…

In most flood zones, Ventura requires new and substantially improved residential structures to elevate the lowest floor…

New homes built in Ventura County's mapped flood zones must elevate the lowest floor at least one foot above the base…

Victorville requires new and substantially improved structures in FEMA-mapped special flood hazard areas to elevate the…

New residential construction in Vista's special flood hazard areas must have its lowest floor, including any basement…

West Covina requires new or substantially improved residential buildings inside a special flood hazard area to elevate…

Westminster requires new or substantially improved residential structures in a mapped special flood hazard area to…

New construction and substantially improved structures in Whittier's mapped flood hazard areas must have their lowest…

New residential construction and substantial improvements in a Yuba City special flood hazard area must have the lowest…

New and substantially improved homes in unincorporated Yuba County's mapped flood zones must have their lowest floor…