Solano County, CA Ordinances (2026)

Aircraft noise in unincorporated Solano County, dominated by Travis Air Force Base, is governed by federal and regional rather than county police-power rules. The Solano County Airport…

Unincorporated Solano County has no standalone amplified-music ordinance. Amplified sound is enforced through Solano County Code Sec. 21-10, where non-agricultural noise above 65 dBA…

In unincorporated Solano County, the county's general noise standard in Solano County Code Sec. 21-10 captures barking dogs as 'loud or unusual noise.' The county Animal Services and…

Every use of land or buildings in unincorporated Solano County must keep noise at or below 65 dBA at the property line. Zoning Code Section 28.70.10(B)(1)(b) makes this the general…

Unincorporated Solano County sets nighttime quiet hours through Solano County Code Sec. 21-10 (Disturbing the Peace). Any non-agricultural noise exceeding 65 dBA at the property line…

Unincorporated Solano County has no dedicated construction-hours ordinance. Construction noise is governed indirectly by Solano County Code Sec. 21-10, which makes any non-agricultural…

Solano County requires every permitted vacation house rental to be covered by commercial property insurance for the life of the operating permit. The requirement is short but…

Unincorporated Solano County does regulate short-term lodging (stays of 30 consecutive days or less) under Chapter 28 of the County Code. Hosted rentals need an Administrative Permit…

Unincorporated Solano County caps overnight occupancy for a Vacation House Rental at two guests per bedroom plus two additional guests per property, up to a maximum of 10 guests, not…

Guests at a Solano County vacation house rental must observe quiet hours from 9:00 p.m. to 8:00 a.m., and the operator must take reasonable measures to prevent excessive noise or other…

Solano County treats an owner-occupied short-term rental of a single guest room, called a "hosted rental," as a distinct use from a whole-house vacation rental, capping it at one guest…

While a Solano County vacation house rental is occupied, the owner or a property manager must be reachable 24 hours a day and respond to complaints within 45 minutes, with a posted…

Recreational fire pits are allowed in unincorporated Solano County under the California Fire Code, which the County adopted as part of the 2025 California Building Standards Code. Open…

All fireworks are illegal in unincorporated Solano County. The Solano County Code (Chapter 12.5, pyrotechnics) makes it unlawful to possess, use, discharge, sell, or offer for sale any…

Outdoor burning of vegetation in unincorporated Solano County is tightly regulated by air and fire authorities. The northeastern county (Vacaville, Dixon, Rio Vista) is governed by…

Solano County will not approve a new vacation house rental in a Very High Fire Hazard Severity Zone at all. In a High Fire Hazard Severity Zone, a rental can be approved only if the…

Solano County has no general on-street ban targeting commercial trucks in residential areas; that area is governed by California Vehicle Code Section 22507.5. The County's zoning code…

Solano County Code Chapter 6.5 makes it a misdemeanor to leave an abandoned, wrecked, dismantled, or inoperative vehicle on public or private property for more than 10 days unless…

On unincorporated County roads, the main local rule is Solano County Code Section 6.5-36, which bans parking or leaving a vehicle standing on any street, highway, or public road for 72…

Unincorporated Solano County has no blanket overnight on-street parking ban. The closest local rule is the 72-hour continuous-parking limit in Section 6.5-36; an overnight stay well…

Solano County requires a building permit for electric vehicle charging stations but must issue it on a nondiscretionary, expedited basis once an application meets the county's…

Unincorporated Solano County has no specific zoning ordinance restricting where residents may park or store a recreational vehicle, boat, or trailer on their own private property. The…

Solano County's Zoning Code does not impose broad fence-material bans for ordinary residential fences. Where screening is required between a non-residential use and homes, Section…

In any residential (R) district of unincorporated Solano County, Section 28.93.A.3 limits fences behind the building line to 7 feet and fences between the building line and a street to…

Solano County bars cuts and fills within five feet of a property line unless a retaining wall is built, and the wall's height can never exceed its distance from the property line under…

Solano County Building & Safety Services exempts fences not over 6 feet high from a building permit. Fences over 6 feet, and certain walls or retaining walls, may require a permit, and…

Unincorporated Solano County allows campaign signs without a sign permit. Under Code Section 28.96.70(D), campaign signs may go up on private property with the owner's consent up to 60…

Solano County bans animated and electronic message display signs outright across the unincorporated county. Zoning Code Section 28.96.40(A)(2) lists them among the fourteen sign types…

Window signs in unincorporated Solano County cannot cover more than 33 percent of the total window area under Zoning Code Section 28.96.100(F)(1). The cap applies to both permanent and…

Unincorporated Solano County has no comprehensive countywide dark-sky lighting ordinance. Instead, Chapter 28 imposes shielding and downcast lighting requirements on specific uses…

Unincorporated Solano County controls light trespass through Chapter 28 performance standards. Exterior lighting must be directed away from adjacent properties and public rights-of-way…

Solano County Code Chapter 4 sets no fixed numeric limit on how many dogs or cats a household may keep in unincorporated areas. Instead, keeping dogs or cats over four months of age as…

Solano County's animal code (Chapter 4) contains no breed-specific ban or restriction. Dangerous and vicious animals are regulated by behavior, not by breed. Under California Food and…

In unincorporated Solano County, keeping chickens and other fowl is regulated through the County zoning code (Chapter 28) by district and use, while County Code Chapter 4 makes it a…

Keeping a wild or exotic animal in unincorporated Solano County requires an annual permit from animal control plus zoning that allows the use, and any exotic animal that needs a state…

Solano County bars dogs and other animals from running at large on any public street, road, alley or unenclosed lot unless restrained by leash, lead or chain, at heel beside a…

A grooming parlor keeping dogs or cats over four months old counts as an "animal facility" under the county's animal code and must get a license from the animal control director before…

Unlike dogs, cat licensing in unincorporated Solano County is optional: owners "may procure" a license rather than being required to, but any cat that is licensed must carry current…

Every dog and cat adopted, released, redeemed or rescued from the Solano County Animal Shelter must be implanted with a microchip before leaving, and the owner is responsible for…

Every dog or cat adopted, purchased or rescued from the Solano County Animal Shelter must be spayed or neutered within 30 days if four months or older, or 60 days if younger, backed by…

Animal hospitals and veterinary clinics permitted as commercial service uses in unincorporated Solano County must be run by the property owner or occupant, control noise and odor, and…

Solano County Parks operate on posted hours set by the parks division under Code Chapter 19. Day-use areas are open during posted daylight hours; quiet hours run 10:00 p.m. to 7:00…

No one under 18 may loiter on unincorporated Solano County streets or public places between 10:00 p.m. and sunrise unless accompanied by a parent, guardian, or a spouse over 21…

Unincorporated Solano County allows home occupations as an accessory residential use under Zoning Code Chapter 28. Section 28.72.40 defines Type I home occupations (no employees, no…

Unincorporated Solano County limits home occupation signs under Zoning Code Section 28.72.40. A Type I home occupation generally permits no on-site signage advertising the business…

Solano County treats a licensed family day care home as a residential use, not a commercial or community care facility, anywhere the underlying home is allowed. No conditional use…

Solano County limits when clients and customers may visit a permitted cottage industry run out of a home or accessory building, restricting on-site visits to 8:00 a.m. to 6:00 p.m…

Unincorporated Solano County does not have a separate numbered weed-abatement chapter; overgrown, dead, or hazardous vegetation is abated as a public nuisance under Solano County Code…

Unincorporated Solano County has no general ordinance regulating how you trim trees on your own property. For wildfire safety in the State Responsibility Area, California Public…

Unincorporated Solano County adopts the California Model Water Efficient Landscape Ordinance (MWELO) at Solano County Code Chapter 13.5, applying to new landscapes of 500+ square feet…

In unincorporated Solano County, a one-story detached storage or tool shed of 120 square feet or less with no utilities is exempt from a building permit. Sheds must still meet zoning…

Unincorporated Solano County allows ADUs and JADUs by right on residential lots in rural residential (R-R) and residential-traditional community (R-TC) districts. The County's ADU…

When a Solano County lot carries both an accessory dwelling unit and a junior accessory dwelling unit, Section 28.72.10(B)(2)(p)(4) bars renting either unit for less than 30 days…

Solano County requires the property owner to live in either the primary home or the junior accessory dwelling unit before a JADU can be built, per Section 28.72.10(B)(2)(q)(1), unless…

Unincorporated Solano County allows garage conversions to ADUs or JADUs under Chapter 28 consistent with California ADU law. Conversions of existing legal space require no additional…

Pool barriers in unincorporated Solano County follow California state law. Through the 2022 California Residential Code (Appendix AX) adopted under County Code Chapter 6.3 and the…

In unincorporated Solano County, garbage, recyclables and green waste containers must be nonabsorbent, leakproof, vector-resistant and lidded, and residents must pull empty carts back…

Dumping or discarding litter anywhere in unincorporated Solano County outside a lawful container or disposal area is an infraction under the county's Litter Control Program, carrying a…

Solano County defines bulky waste as oversized items like appliances, furniture, large auto parts and tree stumps that don't fit in a wheeled cart, and it lets residents in the…

Homes in a Solano County mandatory service area, meaning parcels zoned Rural-Residential, Residential-Estate, One-Family, Duplex or Multiple-Residence, must take recycling and solid…

Unincorporated Solano County requires recyclable material to be kept in approved containers that are leakproof, vector-resistant and fitted with lids, with a 250-pound weight cap on…

Every commercial and industrial property in unincorporated Solano County must keep its solid waste, recyclables and green waste in a storage enclosure with an impervious floor, and the…

Green waste, meaning leaves, grass clippings, brush and tree cuttings, cannot pile up on unincorporated Solano County property long enough to cause a nuisance, and the county can order…

Every congested-area resident and all commercial or industrial establishments in unincorporated Solano County must sign up for solid waste, recyclables and green waste service with a…

Solano County collects a 5% transient occupancy tax on the rent charged at every hotel, motel, bed and breakfast, RV park, campground, or short-term vacation rental in the…

Solano County has no authorizing ordinance for card rooms: Section 21-12 bans dealing, playing, or conducting any card, dice, or gambling-device game for money, checks, or credit…

Building or placing anything, including a sidewalk, driveway, fence or wall, in or over a county road right-of-way in unincorporated Solano County requires an encroachment permit from…

Loitering, standing, or sitting on a Solano County sidewalk, highway, alley, or crosswalk in a way that blocks the free passage of people or vehicles is banned. Section 21-14(a) also…

Anyone running a peddler's business in unincorporated Solano County must first file an application with the business licensing officer, listing every vehicle used and identifying all…

Inside a Solano County park, running a generator or other noise-making device without a written parks division permit is a code violation. Section 19-160(j) bans excessive generator…

Anyone operating an outdoor festival or rock-dance-style public gathering in unincorporated Solano County needs a license from the county before selling a single ticket. The…

Any assembly, parade, footrace or bicycle tour with more than 25 participants on a county road needs a permit from the director of transportation, filed at least 30 days ahead with a…

Meetings, rallies, or similar gatherings on county-owned property, including parks, that are likely to draw a crowd require a county permit filed at least two weeks ahead. The county…

Solano County Code Section 2.2-30 bars agricultural operations on agricultural land from being declared a nuisance solely because nearby land uses changed, protecting farmers and…

Flying a drone in a Solano County park requires a permit from the parks manager. Section 19-160(aa) bars operating any self-propelled unmanned aircraft system, model aircraft, boat…

Skateboards, scooters, roller skates, and bicycles are banned on any Solano County property that has been designated and posted as off-limits to that activity. Section 21-18 lets the…

Solano County makes it an infraction to delay, linger or idle in a public parking lot or facility without lawful business for being there. The rule sits in Chapter 3's…

Drinking alcohol on a public street, sidewalk, or any place open to the public in unincorporated Solano County is a misdemeanor punishable by up to $1,000 and six months in jail, while…

Smoking is banned in any area of a Solano County park that the parks division has posted as non-smoking under Section 19-190. Section 19-160(g) makes lighting up tobacco or any other…

Since May 1, 2014, no massage business can operate in unincorporated Solano County unless every owner and every person performing massage holds California Massage Therapy Council…

Inside Solano County parks, only Class 1 e-bikes, pedal-assist with no throttle, may ride wherever conventional bicycles are allowed. Class 2 and Class 3 e-bikes are barred from park…

Solano County sets minimum yard setbacks by zoning district in Chapter 28 of the county code. In the Exclusive Agricultural districts (A-20 through A-160) a main dwelling needs a…

Solano County's Rural Residential districts cap main buildings and accessory dwelling units at 35 feet under Table 28.31B of the zoning code. The limit applies uniformly across the R-R…

Solano County requires a building permit for nearly all construction under the adopted California Building Code, but Code Sec. 6.3-20 carves out three narrow local exemptions: small…

Solano County enforces the 2025 California Electrical Code for all wiring work, adopted by reference in Chapter 6.3, and layers on two local amendments: commercial buildings must run…

Solano County requires inspections at every stage of a permitted project and locks the final inspection under an amended California Building Code Sec. 110.3.10: it cannot pass until…

Solano County exempts accessory dwelling units and junior accessory dwelling units from fire sprinkler installation whenever the primary residence on the same lot is not itself…

Solano County enforces the 2025 edition of the California Green Building Standards Code (CALGreen) as part of its adopted building code family under Chapter 6.3. Every new building…

Solano County will not issue a grading, building, or plumbing permit for any project needing new potable water service until the applicant proves the water source is adequate under…

Every Solano County vacation house rental must equip the dwelling and each individual bedroom with functional smoke and carbon monoxide alarms, and keep at least one working, clearly…

Solano County has adopted the 1997 Uniform Code for the Abatement of Dangerous Buildings by reference as part of Chapter 6.3, giving the Building Official authority to declare a…

Small residential rooftop solar systems in unincorporated Solano County go through a dedicated streamlined process under Code Sec. 6.3-16.030. Applicants submit the state's standard…

Any Solano County grading project disturbing an acre or more must comply with NPDES stormwater rules under Code Section 31-31, including a Storm Water Pollution Prevention Plan with…

Solano County requires a grading and drainage permit before any grading, filling, excavating or vegetation clearing that alters drainage on unincorporated land. Chapter 31 sets a…

New homes and substantial improvements built inside a Solano County special flood hazard area must sit at least one foot above the base flood elevation. Section 12.2-50(c)(1) requires…

Any building, zoning, use, or grading permit application in unincorporated Solano County gets checked against FEMA's Flood Insurance Rate Maps before it's issued. If the site falls…

A Solano County vacation house rental in a High Fire Hazard Severity Zone can be approved only if defensible space around the dwelling is established and kept up under Public Resources…

Solano County has no flat business license fee for most unincorporated businesses. Instead, Section 11-160 imposes activity-specific taxes: $5 per ton on solid waste dumped at a…

Solano County's Local Disease Prevention Demonstration Project let participating pharmacies sell up to 10 hypodermic needles or syringes without a prescription and required them to…

Solano County's zoning ordinance prohibits commercial cannabis activities in every zoning district in the unincorporated county, opting out of licensed dispensaries, cultivation…

Solano County does not keep a list of banned plants; instead, any Resource Protection Use zoning approval must show it will control invasive weeds, plants, or animals so they do not…

Solano County caps nonagricultural noise at 65 dBA at the property line between 10 p.m. and 6 a.m. under County Code Section 21-10. A data center's cooling and backup generators must…

Solano County has no dedicated data center ordinance. In the unincorporated county, a data center is treated as an industrial use and belongs in the M-L, M-G, or I-WD manufacturing…