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Sonoma Municipal Code Chapter 9.56 defines daytime as 7:00 a.m.-9:00 p.m. Sun-Thu and 7:00 a.m.-10:00 p.m. Fri-Sat; nighttime is quiet hours with stricter dBA limits enforced at the receiving property line.
Sonoma Municipal Code 9.56.050 allows residential power equipment (including construction tools) Monday-Friday 8:00 a.m.-6:00 p.m., Saturday 9:00 a.m.-6:00 p.m., and Sunday/holidays 10:00 a.m.-6:00 p.m.
Continuous and unprovoked barking is regulated under SMC 9.56.030 (loud/unusual noise prohibited) and enforced by Sonoma Police, who refer animal-related complaints to Sonoma County Animal Services under County Code Chapter 5.
Gas-powered leaf blowers have been banned within Sonoma city limits since December 22, 2016. Electric and battery leaf blowers are permitted only Monday-Saturday (excluding holidays) from 9:00 a.m. to 4:00 p.m.
Amplified sound directed toward a public right-of-way from a business is prohibited under SMC Chapter 9.56; outdoor amplified music at events requires a zoning/special-event permit, and ongoing amplified sound must stay within general dBA limits in SMC 9.56.040.
The City of Sonoma does not regulate aircraft noise. Aircraft operations and noise emissions are exclusively governed by federal law under FAA jurisdiction, and the nearest airport (Sonoma Valley/Schellville) is regulated by Sonoma County's airport land use compatibility framework, not Sonoma Municipal Code Chapter 9.56.
Sonoma Municipal Code § 9.56.040 sets dBA limits measured at the receiving property line, distinguishing constant from intermittent noise. Commercial property limits are 65 dBA intermittent / 55 dBA constant; residential limits are lower and Chapter 9.56 directs that where two limits overlap, the more restrictive one applies.
On-road motor vehicle noise is regulated by the California Vehicle Code, not Sonoma Municipal Code. CVC § 27150 requires an adequate muffler at all times and § 27151 prohibits exhaust modifications that increase noise above the statutory limits (95 dBA for passenger vehicles under 6,000 lbs GVWR). Sonoma police enforce these state standards.
Sonoma Municipal Code Chapter 9.56 prohibits aiming amplified, transmitted, or recorded sound at the public right-of-way from a business and subjects all outdoor music to the dBA limits of SMC § 9.56.040. Outdoor music events above those limits require a permit under SMC § 9.56.060.
Sonoma Municipal Code § 9.56.040 caps noise on commercial property at 65 dBA intermittent and 55 dBA constant, measured at the property line, unless a use permit authorizes a higher level. Industrial uses are typically conditioned through the use permit process under Title 19 (Zoning).
Sonoma's 2017 vacation-rental ordinance limits overnight occupancy to a maximum of two persons per sleeping room plus two additional persons per unit, with no exceptions for children.
Under Sonoma Municipal Code § 19.50.110 (adopted by Ordinance 12-2017 on Dec. 4, 2017), new vacation rentals are not allowed in any residential, mixed-use, or commercial zone of the City of Sonoma. The only exception is the adaptive re-use of a historic structure, and only previously licensed rentals (valid business license + TOT registration as of Nov. 3, 1999) may continue as legal non-conforming uses.
Even grandfathered Sonoma vacation rentals must hold a current City business license (SMC § 19.50.110(A)(7)) and a Transient Occupancy Tax registration under SMC 3.16.060. Every online advertisement or listing must display the Business License or TOT Certificate number (SMC § 19.50.110(A)(6)).
Sonoma Municipal Code § 19.50.110(A)(5) does NOT require the host to be physically present at the property during a guest stay. Instead, every grandfathered vacation rental must have a designated property manager who is available 24 hours a day, 7 days a week during all times the unit is rented, with name and contact info on file with the City Planning Department.
Sonoma Municipal Code § 19.50.110 does not impose a primary-residence requirement on the grandfathered pool of vacation rentals because new applications are flatly prohibited. The 'grandfather' test is whether the property held a valid business license and TOT registration on November 3, 1999 — not whether the owner lives there.
The City of Sonoma did NOT adopt a hosted-rental or 'home share' carve-out when it passed Ordinance 12-2017. Any rental of 29 consecutive days or less falls within the definition of a 'vacation rental' under SMC § 19.50.110(A)(2) and is barred unless grandfathered. Renting a single room while you live in the home is not a separately permitted use inside City limits.
Vacation rental operators inside Sonoma city limits collect a 13% Transient Occupancy Tax (Sonoma Municipal Code Ch. 3.16) plus a 2% Sonoma Valley Tourism Improvement District assessment, for a combined 15% added to every stay of 30 days or less.
The City of Sonoma's vacation-rental ordinance (SMC §19.50.140) does not require operators to carry a minimum liability-insurance policy; California state law similarly does not impose a host-insurance floor, leaving coverage up to the operator and any platform-provided host protection.
Sonoma's vacation-rental ordinance does not impose an annual rental-night cap, but the City has prohibited issuance of new vacation-rental permits since December 4, 2017, effectively freezing the supply.
Permitted Sonoma vacation rentals are subject to a flat prohibition on outdoor amplified sound and must designate a property manager with City-on-file contact information who responds to neighbor complaints.
Sonoma vacation rentals must accommodate guest parking on-site under the conditions of their original use permit and the City's underlying off-street parking standards (SMC Ch. 19.48); on-street overflow that creates neighborhood impacts is grounds for enforcement.
Repeat vacation rental violations in unincorporated Sonoma County trigger an escalating enforcement ladder, from a warning letter to suspensions of one to six months and license revocation for up to five years for chronic non-compliance.
Sonoma Municipal Code Chapter 10.73 declares abandoned, wrecked, dismantled, or inoperative vehicles on public or private property a public nuisance and authorizes removal after notice and hearing.
California Vehicle Code §22507.5 lets Sonoma restrict commercial vehicles over 10,000 lbs GVWR from parking in residential districts; Sonoma enforces a citywide 72-hour on-street limit (SMC 10.48.040), designated truck routes (SMC Chapter 10.60), and an inoperable-vehicle storage prohibition in residential setbacks (SMC 19.40.110).
Sonoma does not impose a blanket overnight on-street parking ban, but SMC 10.48.050 prohibits using city streets to store vehicles, and CVC 22651(k) authorizes removal of any vehicle parked in the same spot for 72+ consecutive hours.
Sonoma Municipal Code 10.48.040 caps any on-street parking at 72 consecutive hours, and SMC 19.40.110 bars front and street-side setbacks from being used to store inoperable vehicles, boats or trailers; recreational vehicles are defined in SMC 19.92.020.
Sonoma requires all driveways and parking pads to be hard-surfaced and set back from the street, and prohibits parking within the minimum required width of any driveway or private road serving a residence.
On-street parking in Sonoma is governed by SMC Chapter 10.48 (Stopping, Standing and Parking), which prohibits use of city streets as long-term vehicle storage and authorizes posted time-limited zones around the Plaza and downtown.
Sonoma adopted an expedited, streamlined permitting process for electric vehicle charging stations under SMC Chapter 14.29, with most residential EVCS permits issued in 1–3 business days.
Sonoma County Code Sec. 18-3.10 prohibits parking any 'oversized vehicle' on a County road or right-of-way for more than six consecutive hours, after which it must relocate for at least 72 hours. Oversized means any motor vehicle, boat, or trailer at least 24 feet long, 90 inches high, or 96 inches wide, plus buses, trailers, trailer coaches, and recreational vehicles.
On County roads in unincorporated Sonoma County, loading and passenger-loading zones are established under Sonoma County Code Sec. 18-3.3 and marked by curb paint or signs. Stopping is for loading or unloading only and, unless otherwise posted, may not exceed 20 minutes. Yellow and white curbs carry the meanings set by California Vehicle Code Sec. 21458.
Sonoma County Zoning Regulations Article 86 (Sec. 26-86-010) requires every use to provide a minimum number of on-site parking spaces, including at least one covered space per single-family dwelling and one space per accessory dwelling unit.
On County roads in unincorporated Sonoma County, curb colors follow the statewide system in California Vehicle Code Sec. 21458 - red, yellow, white, green, and blue. Only the Public Works Director / Sonoma Public Infrastructure may apply official curb markings under County Code Sec. 18-3.2, and private address-number curb painting in the unincorporated area requires an encroachment permit.
Backyard beekeeping is permitted in the City of Sonoma. A typical single-family home may maintain up to 2 hives, with up to 4 hives allowed on larger parcels, subject to screening, setback, and licensing requirements. All beekeepers must register apiaries with the Sonoma County Agricultural Commissioner under California's BeeWhere program.
California Food & Agricultural Code §31683 preempts breed-specific bans, but Sonoma County requires mandatory spay/neuter of all pit bulls over four months old under Chapter 5, Article XIV (§5-171), which applies in unincorporated areas and is enforced alongside the City's dangerous-dog rules in SMC Chapter 8.12.
The City of Sonoma has no city-specific wildlife-feeding ordinance, but state law applies: under 14 CCR §251.1, feeding wild birds and mammals can constitute illegal 'harassment' of wildlife. Feeding deer, bears, mountain lions, and other big game is prohibited under California Fish and Game Code §4014.
Sonoma Municipal Code Chapter 8.06 prohibits dogs from being at large on any public street or place; dogs must be restrained by a leash no longer than six feet, with exceptions for service dogs, police dogs, and posted off-leash areas.
The City of Sonoma regulates keeping of livestock, fowl and other animals under Sonoma Municipal Code Chapter 8.08. Chickens and small fowl are allowed in residential zones subject to setback and sanitation requirements, while dairies and commercial animal farms are prohibited.
Keeping exotic or wild animals in the City of Sonoma is prohibited without proof of proper state approvals under Sonoma Municipal Code §8.06.120. The municipal code adopts the California Department of Fish and Wildlife's restricted species list — possession of restricted species requires a permit issued under Cal. Fish & Game Code §2118.
The City of Sonoma does not impose a numeric cap on the number of pets per household, but animal hoarding is prosecuted under California Penal Code §597 (cruelty) and §597.1 (neglect), and locally under Sonoma Municipal Code Chapter 8.06. Hoarding is a wobbler — chargeable as a misdemeanor or felony.
Livestock in unincorporated Sonoma County is governed by the Zoning Code's animal-density standards administered by Permit Sonoma, with allowances based on zoning district and parcel size. County Code Chapter 5 also protects livestock by addressing dogs that enter property where sheep or other livestock are kept.
In unincorporated Sonoma County, no permit is required to keep up to four dogs and/or four cats on a property. Keeping five or more typically requires a license or use permit. Five to ten animals kept non-commercially can be licensed as a pet fancier facility; five or more kept commercially is a kennel.
Under Sonoma County's Animal Regulation Ordinance (County Code Chapter 5, Article VI), cats four months of age or older must be vaccinated against rabies. Cat registration with Animal Services is voluntary, with reduced fees available for spayed/neutered cats and for owners age 62 or older.
Sonoma County Code Chapter 5, § 5-115 prohibits dogs from running at large in unincorporated areas and requires that any dog on a public street or other public place be restrained by a substantial leash held by a person capable of controlling the animal.
Sonoma County Code § 5-126 declares it a public nuisance to permit an animal to obstruct the reasonable and comfortable use of property in a neighborhood by barking, howling, or making other noise. Two affirming neighbors (or one if within 300 feet) can trigger an Animal Services investigation and an abatement order, with referral to the District Attorney for noncompliance.
Recreational fires and fire pits are allowed inside the City of Sonoma under the California Fire Code as adopted by the Sonoma Valley Fire District, but only natural gas/propane fire pits and small wood recreational fires meeting setback and supervision rules are permitted; vegetation pile burning inside city limits is prohibited.
The City of Sonoma prohibits the sale, possession, use, or discharge of any fireworks – including 'Safe and Sane' fireworks and sparklers – inside city limits. Cloverdale is the only city in Sonoma County that still allows state-approved fireworks; everywhere else, including unincorporated Sonoma County, all fireworks are banned year-round.
Open burning of yard waste, brush, leaves, or trash is prohibited inside the City of Sonoma. The city is a Local Responsibility Area (LRA) where Bay Area Air Quality Management District (BAAQMD) rules and SVFD policy disallow residential vegetation pile burning; burn permits are only issued for unincorporated/State Responsibility Area (SRA) properties.
Property owners in the City of Sonoma must maintain 100 feet of defensible space around structures per California Public Resources Code §4291 (in Very High Fire Hazard Severity Zones) and meet weed abatement standards enforced by the Sonoma Valley Fire District annually. Failure to comply can result in city-conducted abatement with the cost recovered as a property tax lien.
The City of Sonoma adopted CAL FIRE's updated Local Responsibility Area Fire Hazard Severity Zone (FHSZ) map on May 7, 2025, designating portions of the city as Moderate, High, and Very High Fire Hazard Severity Zones. New construction and major remodels in High and Very High zones must meet California Building Code Chapter 7A Wildland-Urban Interface ignition-resistant standards.
Residential propane (LP-gas) storage in Sonoma is governed by Chapter 61 of the California Fire Code (2022) and NFPA 58 (Liquefied Petroleum Gas Code). Containers up to 125 gallons water capacity may typically be installed at a residence with proper setbacks; containers over 125 gal water capacity require a fire department operational permit.
Smoke and carbon monoxide alarm requirements in unincorporated Sonoma County follow the California Residential Code as adopted through the County's building and fire codes, plus statewide point-of-sale law. Residential permits over $1,000 in valuation trigger alarm upgrades throughout the dwelling, and at least one CO device must be installed when residential property is sold.
Backyard burning of vegetation in unincorporated Sonoma County is allowed only with a valid Permit Sonoma burn permit on a permissive burn day, with piles capped at 4 feet, a 10-foot bare-soil clearance, an adult in attendance, and no burning on windy days. Only dry natural vegetation may be burned - trash and debris are prohibited - and burning is suspended during high fire danger.
Per SMC 19.46.030, fences in front and street-side setbacks are limited to 3.5 feet; rear and interior side yards generally allow up to 7 feet (8 feet with the top foot at least 40% open). Corner-lot sight triangles cap fences at 30 inches.
Sonoma Municipal Code Ch. 19.46 regulates fence materials, including special wall and fencing guidelines (SMC 19.46.070) and material restrictions (SMC 19.46.080). Solid wood, masonry and concrete fences over 7 feet require a building permit; all fences over 10 feet do regardless of material.
California's Good Neighbor Fence Act (Civ. Code §841) presumes adjoining owners share equally in the reasonable cost of a boundary fence and requires 30 days' written notice before incurring shared costs. Local fence height and material rules in SMC Ch. 19.46 still apply.
Per SMC 19.46.040, retaining walls in Sonoma may not exceed 6 feet measured from finished grade at the base of the wall. Walls over 4 feet of unbalanced fill (measured from bottom of footing to top of wall) require a building permit under the California Building Code.
California's Swimming Pool Safety Act (Health & Safety Code §§115920-115929) controls pool barriers in Sonoma. Enclosures must be at least 60 inches tall with self-closing/self-latching gates opening away from the pool, and new/remodeled pools must include at least two of seven approved drowning-prevention safety features.
Fences in unincorporated Sonoma County must meet zoning height limits by yard, sit at least 6 inches outside public rights-of-way and easements, and be measured from the lowest existing grade. No fencing is allowed in a designated floodway (F1), and riparian-corridor fences are limited to about 4 feet of wildlife-friendly open fencing.
Under the 2025 objective standards, residential and K-district fences in unincorporated Sonoma County must use allowed materials such as wood, naturalistic composite wood, stone/masonry, stucco, and non-reflective woven metal or wire. Glass, exposed bunker blocks, razor wire, reflective metal, and barbed wire are prohibited (except qualifying agricultural fences).
Qualifying agricultural fences in unincorporated Sonoma County - post-and-wire, split-rail, or pipe fencing up to 8 feet associated with an existing or proposed agricultural use - are exempt from design review and may be installed anywhere agricultural production is allowed.
Many fences in unincorporated Sonoma County need no permit, but a building permit is required for solid wood/concrete/metal/masonry fences over 7 feet and for any fence over 10 feet. Taller or solid fences in required yards may also need administrative design review, design review, or a use permit under the 2025 objective standards.
All fences in unincorporated Sonoma County must be located at least 6 inches outside any public right-of-way and easement. Within residential and K zones, fence height is also limited by front-yard, corner-visibility, and side/rear-yard setback areas.
Swimming pools in unincorporated Sonoma County must have at least two drowning-prevention safety features under California's Swimming Pool Safety Act. The barrier option requires a minimum 60-inch fence with a self-closing, self-latching gate latched at least 60 inches above grade and a maximum 2-inch gap at ground level.
Sonoma requires a building permit for any new in-ground or above-ground pool, spa, or hot tub holding water deeper than 18 inches, with plans reviewed by Permit Sonoma against the California Building Code and SMC 19.50.080.
New and remodeled pools/spas at Sonoma single-family homes must have at least two of seven independent drowning-prevention features under California HSC §115922, plus dual anti-entrapment drains under the Virginia Graeme Baker standards (ASME/ANSI A112.19.8) referenced in Permit Sonoma CNI-044.
Hot tubs and spas in Sonoma are treated as swimming pools when their water depth exceeds 18 inches, but a locking safety cover meeting ASTM ES 13-89 can exempt a spa from the full HSC §115922 enclosure mandate under Permit Sonoma CNI-044.
Pool enclosures in Sonoma must be at least 60 inches high with self-closing/self-latching gates opening away from the pool, no more than a 2-inch ground gap and no openings that pass a 4-inch sphere - the isolation-enclosure option under SMC 19.50.080 and California Pool Safety Act HSC §115922-115923.
Above-ground pools holding water over 18 inches deep are regulated identically to in-ground pools in Sonoma - building permit, 5-foot side/rear setback under SMC 19.40.110, and the HSC §115922 two-feature drowning-prevention requirement all apply.
New and remodeled private pools in unincorporated Sonoma County must be equipped with at least two of seven drowning-prevention safety features under the California Swimming Pool Safety Act, including isolation enclosure, mesh fencing, safety cover, door exit alarms, self-latching door devices, water-entry alarms, or equivalent.
Sonoma County does not impose ongoing water-quality or maintenance rules on private residential pools. Environmental Health inspects and permits only public pools and spas; private pool owners must maintain anti-entrapment drain covers installed at construction and keep barriers operable.
Within the Sonoma Valley Fire District jurisdiction (which includes the City of Sonoma), annual grasses must be cut to a maximum of 4 inches and maintained as defensible space out to 100 feet from any structure, mirroring California Public Resources Code § 4291 and Sonoma Valley Fire District (SVFRA) Annual Weed Abatement Regulations.
Sonoma Municipal Code Chapter 14.32 implements California's Model Water Efficient Landscape Ordinance (MWELO) for new and rehabilitated landscapes, with most provisions triggered at 500 sq ft (new) or 2,500 sq ft (rehabilitated). Single-family private residential landscaping is not affected by AB 1572's non-functional turf irrigation ban.
Sonoma Municipal Code Chapter 12.08 (Tree Ordinance) regulates pruning, alteration, and removal of public and 'significant' trees in the City of Sonoma. Pruning of public trees and any alteration/removal of significant trees requires a permit, with ISA-certified arborist standards under SMC § 12.08.060.
Combustible weeds, brush, and dry vegetation are declared a public nuisance under the City's adoption of the California Fire Code via SMC § 14.10.045, enforced by the Sonoma Valley Fire District's Annual Weed Abatement Program. Owners must abate within 30 days of notice or the city/SVFRA performs the work and bills the cost plus a lien.
The City does not mandate native plants by species list, but SMC § 19.40.060 (Landscape standards) and SMC Ch. 14.32 require drought-tolerant plantings in conformance with the city's low-water-use landscaping ordinance, and prohibit turf in commercial landscapes except in active play areas.
California law expressly permits residential rainwater harvesting from rooftops under the Rainwater Capture Act of 2012 (Cal. Water Code § 10574), and no water-right permit is required. Rain barrels and non-potable cisterns under 5,000 gallons are typically exempt from building permits in the Sonoma region when basic safety criteria are met.
The City of Sonoma has no ordinance prohibiting residential artificial turf, and California Civil Code § 4735 forbids homeowners associations from banning synthetic grass on a member's separate-interest property. Commercial/nonresidential turf is treated as 'non-functional' under SMC Ch. 14.32 / AB 1572 and is generally limited.
Under California SB 1383 (effective Jan 1, 2022), all Sonoma County residents and businesses must keep organic waste - food scraps and yard trimmings - out of the landfill, typically by using the green organics cart. Backyard home composting is encouraged and can reduce what you set out. The mandate is a state law implemented locally by Zero Waste Sonoma.
Unincorporated Sonoma County requires a permit to remove most protected native trees 6 inches in diameter or larger. A ministerial zoning permit covers smaller trees; a discretionary use permit is needed for hardwoods 36 inches or larger and redwoods 48 inches or larger. Mitigation fees apply, starting at $510 per arboreal value point.
All ADUs and JADUs require a building permit from the City of Sonoma Planning and Community Services Department, processed ministerially under state law (Cal. Gov. Code 65852.2(b)) within 60 days of a complete application. No discretionary CUP or public hearing is required.
JADUs require owner-occupancy of the parcel (either the main house or the JADU). New ADUs permitted on or after January 1, 2020 are exempt from owner-occupancy per Cal. Gov. Code 65852.2(a)(6); pre-2020 ADUs remain subject to the rule in effect at permitting.
Sonoma allows ADUs and JADUs in all residential zones (R-HS, R-R, R-L, R-S, R-M, R-H, R-O, R-P) under SMC Chapter 19.45, consistent with Cal. Gov. Code 65852.2. Detached ADUs are capped at 850 sq ft (or up to 1,200 sq ft with proportional limits) with a 4-foot side/rear setback and 16-foot height for single story.
Sonoma prohibits renting any ADU or JADU for terms shorter than 30 days (no short-term/vacation rentals). Properties with an attached JADU are categorically ineligible for vacation rental use.
Per Cal. Gov. Code 65852.2(f) and 66311.5, ADUs under 750 sq ft pay NO impact fees in Sonoma. ADUs 750 sq ft or larger pay impact fees proportionate to the ratio of ADU square footage to the primary dwelling's square footage, collected at final inspection or certificate of occupancy.
Detached storage sheds 120 sq ft or smaller and not over 8 ft tall may sit at the side or rear property line without a building permit; anything larger triggers SMC 19.50.080 standards and a Permit Sonoma building permit.
Carports are listed accessory uses under SMC 19.50.080; detached carports must follow the 15-ft height cap and are barred from front and street-side setbacks, while attached carports must meet the main dwelling's setback and height standards.
The City permits converting an existing garage into an ADU under SMC 19.45.040 with no replacement parking required; state law (Gov. Code §66323) and the City waive parking when the ADU is within ½ mile of transit or in the historic district.
The City of Sonoma has not adopted the County's movable-tiny-home (THOW) program — within city limits a tiny home is only legal as a permanent-foundation ADU built to the California Building Code under SMC Chapter 19.45.
Per Permit Sonoma Policy 1-4-6 (implementing California Building Code Section 406.3 and Sonoma County Code Chapter 26), detached private garages are classified as Group U occupancy, must include a 10x20-foot vehicle parking area, and are capped at 3,000 square feet with no kitchen or bedroom allowed.
Sonoma Municipal Code §19.50.040 allows home occupations only with an Administrative Permit (or, for higher-impact uses, a Conditional Use Permit) plus a City business license, and confines the activity to no more than one room or 20% of the main dwelling's gross floor area.
California Health & Safety Code §1597.45 makes small (≤8 children) and large (≤14 children) family daycare homes a residential use by right in all residential zones and prohibits the City of Sonoma from requiring a business license fee, conditional use permit, or building-occupancy change for them.
Under SMC §19.50.040, a home occupation in the City of Sonoma may not display window signs, advertising signs, merchandise, products, or stock in trade visible from the exterior; the City Planner may allow one name plate not exceeding one (1) square foot.
SMC §19.50.040 requires that home occupations not generate pedestrian or vehicular traffic, deliveries, or parking demand substantially greater than normal residential uses, and prohibits employees who do not reside in the dwelling.
California's Homemade Food Act (AB 1616, codified at Health & Safety Code §§113758, 114365) authorizes home production of non-potentially-hazardous foods; Sonoma County Department of Health Services issues Class A registrations and Class B permits, and the City of Sonoma cannot prohibit a compliant cottage food operation but applies its home-occupation standards.
Since Ordinance No. 6363 (2021), unincorporated Sonoma County no longer requires a zoning permit for a qualifying home occupation under Zoning Code Section 26-88-121. Operators must instead meet by-right standards on customers, hours, deliveries, and vehicles.
As of December 14, 2021, Sonoma County eliminated the zoning permit requirement for home occupations in unincorporated areas. Operators must still comply with the operational standards in Section 26-88-121.
Sonoma Municipal Code Chapter 12.08 requires a written permit from the City before altering, removing, or relocating any 'significant tree' on private or public property.
Sonoma Municipal Code Chapter 12.09 designates 'heritage trees' — those with historical significance, mutual dependence, outstanding specimen status, or ≥50 inches diameter at 24 inches above grade — and prohibits their removal or damage.
When a significant tree is approved for removal, SMC §12.08.065 requires replacement; the City may accept an in-lieu payment of $100.00 per 15-gallon replacement tree, with funds earmarked for tree education and planting.
Only the Public Works Director or an authorized representative may plant, prune, or trim trees in Sonoma's public rights-of-way without a written permit; residents must apply first under SMC §12.08.030.
Sonoma does not single out species by name; instead Chapter 12.08 protects all trees that meet the 'significant tree' definition in §12.08.020 — which captures many oaks, elms, maples, redwoods, and cedars — plus designated heritage trees under Chapter 12.09.
Sonoma participates in the National Flood Insurance Program and regulates development in FEMA-mapped Special Flood Hazard Areas through Chapter 14.25 of the Municipal Code.
A grading permit is required for excavation, grading, and fill in Sonoma, with engineered plans, bonds, and inspections governed by Chapter 14.20 of the Municipal Code.
Sonoma operates under a State NPDES Phase II MS4 permit and bans non-stormwater discharges into the city's storm drains, which flow untreated to Nathanson, Sonoma, and Fryer Creeks.
Every grading permit application in Sonoma must include an erosion and sediment control plan, and engineered or sensitive-area projects require certification by a Certified Erosion Control Specialist.
No local coastal development ordinance — the City of Sonoma is inland in the Sonoma Valley and lies entirely outside the California Coastal Zone, so the Coastal Act does not apply.
Dumping waste on public or private property in Sonoma is prosecuted under California Penal Code §374.3 with mandatory fines starting at $250 and rising to $10,000 for commercial-quantity third offenses; cleanup costs are recoverable from the dumper.
SMC 7.08.060 governs the location of solid-waste and source-separated containers; carts should be at the curb the night before pickup and may not be stored in view of the public street between collection days.
Solid waste collection in the City of Sonoma is provided exclusively by the franchised hauler (Sonoma Garbage Collectors) under SMC Chapter 7.08; every occupied premises must subscribe and use the three-cart system (gray trash, blue recycling, green organics) required by California SB 1383.
Sonoma Garbage Collectors holds two free Spring/Fall cleanups (April and October) where SGC residential customers may set out one large item under 75 lbs plus up to ten bags; on-demand bulky pickup is also available for a fee at (707) 996-7555.
SMC Chapter 7.10 implements California SB 1383 (2016) and requires every residential and commercial generator in Sonoma to subscribe to recycling service and source-separate recyclables (blue cart) and organics (green cart) from trash.
Sonoma supplies every residence with a 96-gallon green organics cart for grass, leaves, hedge clippings, branches, and untreated lumber; yard waste must go in the green cart under SMC Ch. 7.10 (SB 1383) and may not be burned because the City sits in a CAL FIRE State Responsibility Area / WUI.
California's SB 1383 makes it unlawful to throw food waste in the garbage. In unincorporated Sonoma County, residents must separate organics into the green cart serviced by Recology Sonoma Marin or self-haul to a permitted facility. Tiered businesses must also recover edible food.
Sonoma Municipal Code §5.08.201.4 prohibits placing any garage, yard or patio sale sign, billboard, placard or other advertisement on any public property within the City, and also prohibits placing such signs on the premises where the sale is being conducted.
Political signs in the City of Sonoma are regulated under Sonoma Municipal Code (SMC) §18.12.090(L) and may not be posted on public property under SMC §18.28.036. California Penal Code §556.1 requires owner consent before placing any sign on private property.
The City of Sonoma does not impose a specific ordinance limiting residential holiday displays. Outdoor decorations are generally treated as accessory to a residence and not as regulated 'signs' under Sonoma Municipal Code Title 18; however, public-right-of-way and nuisance rules still apply.
Commercial drone operators in Sonoma must hold an FAA Part 107 Remote Pilot Certificate, register each aircraft, and follow the city's July 2025 drone ordinance, which adds local takeoff/landing, buffer-zone, and event rules on top of federal airspace law. Commercial filming on city property also requires a separate City of Sonoma film permit.
The City of Sonoma adopted a new drone ordinance in July 2025 setting local time-place-manner rules for unmanned aircraft. Recreational operators must also register with the FAA, pass the TRUST test, and follow 49 U.S.C. §44809 limits on hobby use; airspace itself is federally regulated and cannot be overridden by the city.
Drones are not allowed in Sonoma County Regional Parks (which manages Plaza Park and Depot Park in the City of Sonoma), and SMC Ch. 9.12 prohibits activities in city parks that endanger or disturb other visitors. Nearby California State Parks, including Sonoma State Historic Park, also prohibit unmanned aircraft except under a Special Use Permit.
Mobile food vendors in Sonoma may operate on private property with the owner's consent and in compliance with zoning, and on public sidewalks subject to the state Safe Sidewalk Vending Act (SB 946, Cal. Gov. Code §51036 et seq.). On-street vending generally requires an encroachment permit under SMC Ch. 12.20. State law (Cal. Veh. Code §22455) bars sales from commercial vehicles in roadways that create a traffic hazard.
Operating a food truck or mobile food facility in the City of Sonoma requires a Sonoma County Environmental Health Mobile Food Facility (MFF) permit under the California Retail Food Code (Cal. Health & Safety Code §113700 et seq.) and a City of Sonoma business license under SMC Title 5. Many on-street commercial vending uses also require an encroachment permit under SMC Ch. 12.20.
Sidewalk vending is legal statewide under the Safe Sidewalk Vending Act (SB 946, Cal. Gov. Code §§51036–51039). California cities may not ban sidewalk vending outright; the City of Sonoma may only impose objective time, place, and manner restrictions tied to health, safety, or welfare. Food vendors must also hold a Sonoma County Environmental Health Compact Mobile Food Operator (CMFO) permit.
Door-to-door commercial solicitors and peddlers in the City of Sonoma must hold a City business license under SMC Title 5 (§5.04). Non-commercial canvassing (political, religious, charitable) is protected by the First Amendment under Watchtower v. Village of Stratton, 536 U.S. 150 (2002), and the City may not require a permit for purely non-commercial canvassing.
The City of Sonoma does not operate a centralized 'no-knock' registry, but a clearly posted 'No Solicitors' or 'No Trespassing' sign at the entrance of private property creates a posted refusal of consent. Entry past such a sign is enforceable as trespass under California Penal Code §602(o) by Sonoma Police Department.
The City of Sonoma does not have a stand-alone juvenile curfew ordinance in its municipal code. Minors are still subject to California Education Code §48264 (daytime loitering / daytime curfew during school hours) and to county-level emergency curfews enacted under Cal. Gov. Code §8630 when the Sonoma County Sheriff invokes them.
Public parks in the City of Sonoma have set operating hours under Sonoma Municipal Code §9.12.050. Plaza Park and Depot Park are operated by Sonoma County Regional Parks and follow Regional Parks' standard hours (typically sunrise to sunset). Being in a park after posted closing hours is a violation enforceable under SMC §9.12.160.
Gas, propane, and electric barbecues are generally allowed in unincorporated Sonoma County and are not subject to the wood-smoke burn bans that can apply on Winter Spare the Air days. The California Fire Code adopted in County Code Chapter 13 sets clearance and safety expectations, and in Very High fire zones grills should be kept well clear of vegetation and structures.
Wood- and charcoal-fired smokers used for cooking are generally allowed in unincorporated Sonoma County and are not regulated as the open burning of vegetation. However, in the BAAQMD portion of the County, wood smoke is restricted on Winter Spare the Air Alert days, and all solid-fuel cooking carries wildfire risk that triggers Fire Code clearance and defensible-space caution.
Building setbacks in unincorporated Sonoma County are set by each zoning district in Chapter 26. In the R1 Low Density Residential district, the front yard must be at least 20 feet (and no structure closer than 45 feet to a road centerline), side yards at least 5 feet, and rear yards at least 20 feet. Other districts have different yards.
Maximum building height in unincorporated Sonoma County is set by each zoning district. In the R1 Low Density Residential district, the main building may be up to 35 feet and accessory buildings up to 15 feet, with additional height allowed only if a use permit is first secured. Other zones set their own limits.
Maximum lot coverage in unincorporated Sonoma County is set by zoning district. In the R1 Low Density Residential district, buildings may cover no more than 40% of the lot, with a minimum lot size of 6,000 square feet and minimum average lot width of 60 feet. Swimming pools may be exempted from coverage by the planning director.
In unincorporated Sonoma County, Permit Sonoma's Code Enforcement Division responds to complaints about junk, debris, and substandard property. Violations are typically declared public nuisances and must be abated, usually within 30 days, under the County Code's administrative enforcement procedures.
Unincorporated Sonoma County residents receive three weekly-collected carts (gray garbage, blue recycling, green compost) from franchised hauler Recology Sonoma Marin. Carts come in 20-, 32-, 64-, and 96-gallon sizes and must not be overstuffed; loose material set out without prior arrangement is not collected.
Under Sonoma County Code Chapter 13A, hazardous vegetation and combustible material on unimproved (vacant) parcels in unincorporated areas is a declared public nuisance. Owners must clear flammable growth within 10 feet of structures and roadway frontage and may face County abatement with cost recovery.
Sonoma County Code Chapter 13A requires year-round defensible space in unincorporated areas. On improved parcels, owners must keep grass cut to 6 inches or less and maintain a 30-foot defensible space; the County Fire Warden can order abatement and recover costs as a property lien.
Sonoma County publishes no specific garage-sale permit ordinance for unincorporated areas, and operating a business in the unincorporated county does not require a county business license. Occasional household yard sales are generally treated as incidental residential activity, not a regulated business use.
Unincorporated Sonoma County has no single countywide dark-sky ordinance for all properties, but its Zoning Regulations (Chapter 26) require fully shielded, downward-cast lighting for many uses. For example, ADU and certain special-use standards require fully shielded, downward-facing fixtures and prohibit floodlights and uplights.
Sonoma County's Zoning Regulations (Chapter 26) address light spillover onto neighboring properties through use-specific standards and design review rather than a single trespass ordinance. Regulated uses must use fully shielded, downward-cast lighting so it does not wash onto other properties, and certain uses cap illuminance at the property line.
On September 17, 2024, the Sonoma County Board of Supervisors adopted Ordinance No. 6496, the Residential Tenancy Protections Ordinance, which applies to rental units in unincorporated Sonoma County. The ordinance augments the statewide California Tenant Protection Act (AB 1482, Cal. Civ. Code § 1946.2) by extending just-cause protections from day one of any covered tenancy, expanding coverage to income-restricted housing, narrowing the rent-nonpayment trigger, and increasing no-fault relocation payments.
Unincorporated Sonoma County does NOT have a local rent control ordinance. The 2024 Residential Tenancy Protections Ordinance (Ord. 6496) added eviction protections but did not adopt a local rent cap. The only annual rent-increase cap covering most Sonoma County tenants is California's statewide Tenant Protection Act (AB 1482), codified at Cal. Civ. Code § 1947.12, which limits increases to 5% + the regional CPI, with a 10% hard ceiling.
California evictions run through the unlawful detainer process. Under Code of Civil Procedure § 1161, nonpayment requires a 3-day notice to pay rent or quit (excluding weekends and holidays), and lease violations require a 3-day notice to cure or quit. No-fault terminations of covered tenancies require 30, 60, or 90 days. Self-help lockouts are illegal.
California landlords must keep rentals fit to live in. Civil Code §§ 1941 and 1941.1, reinforced by Green v. Superior Court, imply a warranty of habitability covering plumbing, heat, water, electricity, and sanitation. If repairs fail after notice, a tenant may repair and deduct up to one month's rent under § 1942 or withhold rent.
California Civil Code § 1954 limits when a landlord may enter a rented home. Except in emergencies, abandonment, or with tenant consent, the landlord must give reasonable written notice (24 hours is presumed reasonable) and may enter only during normal business hours, for specific permitted reasons such as repairs, inspections, or showings.
California sets no fixed dollar or percentage cap on rent late fees, but a late fee in a residential lease is treated as liquidated damages. Under Civil Code § 1671, such a fee is valid only if it reasonably estimates the landlord's actual loss from late payment; arbitrary penalty fees are unenforceable.
To end a California month-to-month tenancy, a tenant gives 30 days' written notice. A landlord gives 30 days if the tenant has lived there under a year, or 60 days if a year or more, under Civ. Code § 1946.1. AB 1482 requires just cause after 12 months; military and DV tenants may exit early.
California requires written notice before raising a month-to-month tenant's rent. Under Civ. Code § 827, increases of 10% or less in 12 months need 30 days' notice; increases above 10% need 90 days' notice. AB 1482 separately caps yearly increases on covered units.
As of July 1, 2024, California landlords may collect no more than one month's rent as a security deposit, regardless of whether the unit is furnished. The deposit, minus any lawful deductions, must be returned with an itemized statement within 21 days after move-out, or the landlord risks penalties of up to twice the deposit.
California adverse possession requires five years of continuous, open, hostile possession AND payment of all property taxes during that period under Code of Civil Procedure § 325. A squatter or trespasser who has not paid taxes gains no ownership and can be removed by unlawful detainer, ejectment, or a police trespass action.
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 HOAs may levy regular and special assessments, charge late fees and interest, record liens, and ultimately foreclose on delinquent owners under the Davis-Stirling Act. State law (Civil Code sections 5650-5740) caps fees and interest and imposes strict notice steps and a delinquency threshold before any foreclosure may proceed.
California tightly regulates HOA governance. The Common Interest Development Open Meeting Act (Civil Code 4900-4955) governs board meetings and member access, sections 5100-5145 mandate secret-ballot elections with independent inspectors, and sections 5200-5240 give members broad rights to inspect association records.
California HOAs enforce recorded CC&Rs and architectural rules, but Civil Code section 4765 requires architectural decisions to be fair, reasonable, and in good faith, and sections 5900-5965 require internal dispute resolution plus an attempt at alternative dispute resolution before most enforcement lawsuits can be filed.
California HOAs may fine members for rule violations, but only under a published schedule of fines and after strict due-process steps. Civil Code section 5855 requires written notice and a hearing before any monetary penalty, and section 5725 bars fines from becoming a foreclosable lien on the home.
California overrides HOA governing documents on several owner protections. The Davis-Stirling Act and related Civil Code sections bar HOAs from prohibiting solar systems, U.S. flag displays, drought-tolerant landscaping, EV charging stations, and most noncommercial signs, even where local city rules are silent.
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.
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 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.