Sonoma, CA

The City of Sonoma is served by Valley of the Moon Water District (VOMWD) and supplemented by city wells, and has adopted a permanent Water Waste Prevention Ordinance (Sonoma Municipal Code Chapter 13.10) that prohibits runoff, hose-without-shutoff-nozzle, and other inefficient outdoor water uses year-round. During Stage 2 and Stage 3 drought declarations (most recently called by Sonoma County and Sonoma Water in 2021–2022), outdoor irrigation is limited to specific days and prohibited between 9 a.m. and 7 p.m. The California Model Water Efficient Landscape Ordinance (MWELO) applies to new and rehabilitated landscapes of 500 sq ft or more.

Government Code 65850.3 prevents California cities and HOAs from banning drought-tolerant artificial turf installed at single-family residential properties.

SB 1383 requires every California resident and business to separate food scraps and yard waste from trash, with universal collection or on-site composting.

AB-1572 prohibits using potable water to irrigate non-functional turf at commercial, institutional, and HOA-common areas, accelerating native and low-water landscape conversions statewide.

The 2012 Rainwater Capture Act allows California residents to capture rainwater from rooftops for non-potable outdoor use without a state water-right permit, preempting most local barriers.

Sonoma County enforces the California Swimming Pool Safety Act (Health & Safety Code 115920-115929) and the California Building Standards Code for residential pool, spa, and hot tub barriers in unincorporated areas. Permit Sonoma issues building permits for new pools, spas, and remodels and verifies that the pool is isolated from the home with a 60-inch enclosure plus at least two of seven approved drowning prevention features. Plans must be prepared by a California-licensed civil or structural engineer and detail the proposed fencing.

California's Swimming Pool Safety Act covers above-ground pools deeper than 18 inches, requiring uniform drowning-prevention features and barriers regardless of pool type.

Hot tubs and spas fall under California's Swimming Pool Safety Act when capable of holding water deeper than 18 inches, requiring barriers, covers, or other approved safety features.

California's Swimming Pool Safety Act and Title 24 Building Standards Code establish uniform anti-entrapment, drain cover, and safety equipment requirements for all residential pools.

Sonoma County, the heart of California's wine country (Russian River, Healdsburg, Sonoma Valley, Sebastopol), regulates short-term lodging in unincorporated areas as either Vacation Rentals (VR - whole house, owner not present, 30 days or less) or Hosted Rentals (HR - rooms within an owner-occupied dwelling). Operators must complete a four-part approval: (1) a Vacation Rental Zoning Permit issued by Permit Sonoma under Sonoma County Code Chapter 26 Section 26-88-120, (2) a Vacation Rental Business License under Chapter 4 Article VIII (added by Ordinance 6427, adopted May 16, 2023), (3) a Transient Occupancy Tax (TOT) certificate from the Sonoma County Treasurer-Tax Collector under Chapter 12 Article III, and (4) designation of a 24/7 Certified Vacation Rental Property Manager who must respond to complaints within one hour from 7 a.m. to 9 p.m. and within 30 minutes from 9 p.m. to 7 a.m. Ordinance 6423 (adopted April 24, 2023) created the Vacation Rental Exclusion (X) Combining District, which either prohibits new VR permits outright or caps them at 5 percent or 10 percent of single-family homes in identified West County (Russian River corridor including the Cazadero / Highway 116 area), Sonoma Valley, and Healdsburg-area neighborhoods. Existing permits in X zones may continue but expire on sale or transfer. The incorporated cities of Healdsburg, Sonoma, Santa Rosa, and Windsor have prohibited new whole-house vacation rentals; Sebastopol limits whole-house rentals to 30 nights per calendar year; Petaluma allows up to 90 nights. Junior ADUs (less than 500 sq ft within a single-family residence) may not be used as vacation rentals.

California law requires hosting platforms to verify or disclose liability insurance for short-term rental listings, applying uniformly across all California cities.

All fireworks, including 'Safe and Sane' items, are illegal in unincorporated Sonoma County. Possession, sale, storage, use, or discharge is prohibited except for State-licensed public displays. Property owners and renters can be cited as social hosts when fireworks are set off on their property. Fines reach up to $1,000 per violation, and the entire county is in a CalFire-designated wildfire-prone area following the 2017 Tubbs, 2019 Kincade, and 2020 Glass/LNU fires.

California requires property owners in fire hazard zones to maintain 100 feet of defensible space around structures, applying uniformly across State and Local Responsibility Areas.

California requires permits for most outdoor burning, with statewide CAL FIRE and Air Resources Board rules that uniformly apply alongside local air district restrictions.

California uniformly applies the State Fire Marshal's propane storage standards through the California Fire Code, which all local jurisdictions must enforce as a minimum.

California uniformly classifies and maps Fire Hazard Severity Zones statewide, with mandatory building, disclosure, and defensible space rules tied to zone designations.

Unincorporated Sonoma County allows accessory dwelling units (ADUs) and junior accessory dwelling units (JADUs) ministerially in any zoning district that permits a single-family or multi-family primary dwelling, under Sonoma County Code Section 26-88-060 (ADUs) and Section 26-88-061 (JADUs). The current inland ADU ordinance was adopted by the Board of Supervisors on December 5, 2023 and took effect January 4, 2024, implementing California Government Code Sections 65852.2 and 65852.22 along with the suite of state ADU bills (AB 68, SB 13, AB 881, AB 670, AB 671, SB 897, AB 2221, AB 1033, SB 1211, AB 2533). Detached new-construction ADUs are capped at 1,200 square feet, attached ADUs at 50% of the primary dwelling or 1,200 square feet (whichever is less, but at least 800 sq ft must be allowed), and JADUs at 500 square feet contained within an existing or proposed single-family dwelling. State law guarantees an 18-foot height for detached ADUs (16 feet plus 2 feet for roof pitch) on most lots, 4-foot side and rear setbacks, no minimum lot size, and no owner-occupancy requirement for ADUs permitted between January 1, 2020 and January 1, 2025. JADUs require the owner to live in either the primary dwelling or the JADU and a recorded deed restriction. ADUs and JADUs in unincorporated Sonoma County may not be rented for terms shorter than 30 days, and properties in the State Responsibility Area (SRA), Local Responsibility Area Very High Fire Hazard Severity Zone, or Wildland-Urban Interface (WUI) must meet California Building Code Chapter 7A ignition-resistant construction and PRC 4291 / Sonoma County defensible space requirements - heightened standards adopted in response to the 2017 Tubbs Fire, 2019 Kincade Fire, and 2020 Glass Fire that destroyed thousands of homes countywide. The County has not adopted an AB 1033 condominium-conversion ordinance, so ADUs in unincorporated Sonoma County cannot currently be sold separately from the primary dwelling.

Government Code 65852.2 expressly authorizes converting an existing garage into an ADU, with no replacement parking allowed and ministerial approval required.

California HCD guidance and Health and Safety Code 18007 classify many tiny homes on wheels as manufactured housing or ADUs, granting statewide siting protections.

California Food and Agriculture Code section 31683 preempts cities from banning specific dog breeds, though localities may regulate spay-neuter and breeding by breed.

California Civil Code Section 841, the Good Neighbor Fence Act, presumes adjoining landowners share equal benefit and equal cost responsibility for boundary fences, applying statewide regardless of city ordinance.

California's Swimming Pool Safety Act in Health and Safety Code Section 115920 mandates statewide drowning prevention barriers around residential pools, with cities prohibited from adopting weaker standards.

California Building Code under Title 24 universally requires permits and engineering for retaining walls over four feet measured from the bottom of the footing, applying statewide regardless of local variation.

The California Homemade Food Act, codified at Health and Safety Code sections 113758 and 114365, sets uniform rules for cottage food operations and bars local governments from prohibiting them in residential zones.

Health and Safety Code sections 1597.40 through 1597.465 require all California cities and counties to treat licensed family daycare homes as permitted residential uses, preempting any local prohibition or restrictive zoning.

While most home occupation rules are local, California Government Code section 65852.2 and Business and Professions Code provisions universally guarantee certain residential uses such as accessory dwelling units and licensed professional offices statewide.

California Vehicle Code sections 22651 and 22669 set uniform rules allowing peace officers and authorized agents to remove abandoned vehicles from public and private property after defined waiting periods, with statewide notice and lien procedures.

California Civil Code sections 4745 and 4745.1, plus Government Code 65850.7, create statewide rights for residents to install EV charging stations and require expedited local permitting that supersedes restrictive local rules.

Sonoma County is a North Bay California jurisdiction with extensive riverine flood hazards along the Russian River, Laguna de Santa Rosa, Mark West Creek, Santa Rosa Creek, and Petaluma River. Floodplain development in the unincorporated county is regulated under Chapter 7B (Flood Damage Prevention) of the Sonoma County Code, together with the F1 Floodway Combining District (Chapter 26 Article 56) and F2 Floodplain Combining District (Chapter 26 Article 58). The County participates in the National Flood Insurance Program (NFIP) and adopts FEMA Flood Insurance Rate Maps; Permit Sonoma's Engineering and Construction Division enforces elevation, freeboard, and Elevation Certificate requirements consistent with California Government Code section 65302 floodplain mapping duties.

The California Coastal Act, Public Resources Code sections 30000 through 30900, requires Coastal Development Permits for nearly all work in the coastal zone and gives the Coastal Commission appeal jurisdiction over local decisions.

California Water Code sections 13260 and 13383 implement the federal Clean Water Act through statewide MS4 NPDES permits issued by the State and Regional Water Boards, binding all municipal stormwater dischargers uniformly.

Health and Safety Code section 11362.2 grants every adult 21 or older the statewide right to cultivate up to six cannabis plants indoors, and bars local governments from completely prohibiting indoor personal cultivation.

Commercial drone operations in California follow uniform federal rules under 14 CFR Part 107 plus statewide California provisions in Civil Code 1708.8 and Public Utilities Code 21401, with local rules limited to ground-based regulation.

Recreational drone flight in California is governed primarily by FAA regulations under 14 CFR Part 107 and 49 USC 44809, with state-level rules added by Civil Code 1708.8 and Government Code 853 applying uniformly statewide.

California sets a statewide minimum wage floor under Labor Code 1182.12, currently $16.50 per hour for all employers as of 2025. Local governments are not preempted and may set higher minimums; many cities exceed the state rate substantially.

California's Healthy Workplaces, Healthy Families Act under Labor Code 245-249 mandates paid sick leave for nearly all employees statewide. SB 616 (2023) raised the minimum to 40 hours or five days annually effective January 2024, applying universally.

California regulates concealed carry weapons licenses statewide under Penal Code 26150 through 26225. Senate Bill 2 (2023) imposes uniform sensitive-place restrictions and applicant standards, preempting local variations on issuance criteria and qualifications.

California preempts most local firearm regulation under Government Code 53071 and Penal Code 25605, reserving licensing, registration, and manufacture authority to the state. However, local governments retain limited authority over discharge, sensitive places, and zoning of gun businesses.

California broadly prohibits open carry of firearms statewide under Penal Code 25850 (loaded firearms in public) and Penal Code 26350 (open carry of unloaded handguns). The prohibition applies uniformly across all California cities and counties without local variation.

California prohibits carrying loaded firearms in vehicles statewide under Penal Code 25400 and 25850. Unloaded handguns transported in private vehicles must be in a locked container or the vehicle's locked trunk; long guns must be unloaded but need not be locked.

California Retail Food Code (Health and Safety Code 113700-114437) sets uniform mobile food facility permit, equipment, and food safety standards enforced by counties statewide.

California's Safe Sidewalk Vending Act (SB 946) preempts most local bans on sidewalk vending, allowing only objective health, safety, and welfare regulations.

California prohibits state and local governments from requiring private employers to use the federal E-Verify system except where federal law mandates it, under Government Code 7285.1 and 7285.3. The restriction applies uniformly to every California city and county.

The California Values Act (SB 54, 2017) codified at Government Code 7284-7284.12 limits state and local law enforcement cooperation with federal immigration authorities. It applies uniformly to every California agency and bars participation in most civil immigration enforcement.

Civil Code 1946.2 requires landlords statewide to have just cause to terminate tenancies of qualifying tenants who have lived in a covered unit at least 12 months.

Civil Code 1947.12 limits annual rent increases to 5 percent plus CPI, capped at 10 percent total, on most California rental units regardless of local ordinances.

The California Land Conservation Act of 1965 (Williamson Act), Government Code 51200-51297.4, allows landowners to enter contracts with counties restricting land to agricultural use for ten-year minimum terms in exchange for reduced property tax assessment based on farming income.

The California Right to Farm Act under Civil Code 3482.5 protects established agricultural operations from nuisance lawsuits brought by neighbors who moved in after farming began. The law applies statewide and limits both private and local government nuisance actions.

California Civil Code Section 4710 universally prohibits homeowner associations from banning noncommercial political signs on owner-occupied separate interest property, overriding any local HOA covenant.

California prohibits grocery stores and large retailers from providing single-use plastic carryout bags under Public Resources Code 42280-42288, enacted by SB 270 (2014) and ratified as Proposition 67 in 2016. Recycled paper or reusable bags require a 10-cent minimum charge.

California restricts expanded polystyrene food containers statewide through SB 54 (2022) packaging requirements under Public Resources Code 42040-42081. The law mandates that polystyrene foodware achieve 25 percent recycling by 2025 or face statewide sales prohibition.

California Public Resources Code 42270-42273, enacted by AB 1884 (2018), prohibits full-service restaurants from providing single-use plastic straws unless requested by the customer. The on-request rule applies uniformly to dine-in restaurants statewide.

Civil Code section 714 voids HOA covenants and rules that prohibit or unreasonably restrict residential solar energy systems, preempting private and local restrictions.

California's Solar Rights Act and the SolarAPP+ mandate (SB 379) require expedited permit review of small residential solar systems, preempting restrictive local processes.

California prohibits sale of tobacco and vapor products to anyone under 21 statewide under Business and Professions Code 22958, enacted by SBX2-7 in 2016. The Tobacco 21 standard applies uniformly across all California jurisdictions.

California bans retail sale of most flavored tobacco products statewide under Health and Safety Code 104559.5, enacted by SB 793 (2020) and upheld by voters via Proposition 31 in November 2022. The ban applies uniformly to all California retailers.

California requires statewide licensing of tobacco and vape retailers under the STAKE Act and the Cigarette and Tobacco Products Licensing Act. Business and Professions Code 22970 establishes uniform retailer licensing, while local governments may adopt stricter rules.

California universally requires every resident and business to separate organic waste for recycling, alongside mandatory commercial recycling under AB 341 and AB 1826.

California provides statewide protections for native oak woodlands and heritage trees through CEQA review, Public Resources Code, and Forest Practice Rules that apply uniformly.