A Resident's Guide to Brentwood's Local Ordinances

Brentwood, California may not be the biggest city in the state, but it has its own set of local rules that residents need to follow. With 85 tracked ordinances across 26 categories, there is more here than you might expect.

Accessory Structures

Shed Rules: Brentwood follows the California Building Code exemption allowing detached accessory structures under 120 square feet to be built without a building permit. Sheds must still comply with zoning setbacks, height limits, and HOA rules.

Also covered: ADU Rules (permissive), Garage Conversions (moderate). See the full accessory structures guide for Brentwood for details.

Noise Ordinances

Amplified Music & Events: Amplified music audible beyond the property line after 10:00 PM is prohibited in Brentwood under BMC Chapter 9.32. Outdoor events with amplified sound require a Special Event Permit from the city, and commercial venues in the downtown area operate under conditional use permit noise limits..

Also covered: Quiet Hours (moderate), Vehicle Noise (moderate), Leaf Blower Rules (moderate). See the full noise ordinances guide for Brentwood for details.

Fire Regulations

Brush Clearance: California Public Resources Code Section 4291 requires 100 feet of defensible space around structures in State Responsibility Areas and in any CAL FIRE mapped fire hazard severity zone. Portions of eastern Brentwood abutting Mount Diablo foothills and Marsh Creek are mapped, and ECCFPD inspects compliance before fire season each year..

Also covered: Fireworks (permissive), Outdoor Burning (strict), Smoke Detectors (strict). See the full fire regulations guide for Brentwood for details.

Landscaping Rules

Water Restrictions: Brentwood residents are served by the city's water utility and the East Contra Costa Irrigation District for agricultural users. Permanent statewide water waste rules from the State Water Resources Control Board prohibit runoff, hosing hard surfaces, and watering within 48 hours of rain.

Also covered: Grass Height Limits (moderate), Tree Removal & Heritage Trees (moderate), Native Plants (permissive). See the full landscaping rules guide for Brentwood for details.

Cannabis Regulations

Dispensary Zoning: Brentwood prohibits commercial cannabis operations including medical dispensaries under Municipal Code Chapter 17. Patients may possess medical cannabis under Proposition 215 and cultivate limited plants for personal medical use.

Sign Regulations

Garage Sale Signs: Brentwood allows temporary garage sale signs on private property during the sale weekend only. Signs in the public right-of-way, on utility poles, or attached to street-sign posts are prohibited.

Also covered: Political Signs (permissive). See the full sign regulations guide for Brentwood for details.

Home Business

Signage Rules: Brentwood home occupation rules prohibit any exterior signage advertising a home-based business. The residence must retain its residential character, meaning no signs, lighted displays, window graphics, or merchandise visible from the street or adjacent properties.

Also covered: Customer Traffic Restrictions (moderate), Home Daycare (permissive), Zoning Restrictions (moderate). See the full home business guide for Brentwood for details.

Food Trucks & Mobile Vendors

Vending Zones: Brentwood regulates where food trucks may operate through zoning and time-and-place rules consistent with SB 946 and SB 972. Trucks generally may operate on private commercial property with the owner's consent and at permitted events, with some restrictions near schools and in residential zones..

Also covered: Food Truck Permits (moderate). See the full food trucks & mobile vendors guide for Brentwood for details.

Building Safety

Electrical Permits: Most electrical work in Brentwood requires a permit from the Building Division under the California Electrical Code (Title 24, Part 3), which adopts NFPA 70 with California amendments. Permits are required for new circuits, service upgrades, panel replacements, and most hardwired installations.

Also covered: Roofing Permits (moderate), Carbon Monoxide Detectors (strict), Smoke Alarms (strict). See the full building safety guide for Brentwood for details.

Environmental Rules

Stormwater Management: Illicit discharges — any release of non-stormwater materials into Brentwood's storm drain system — are prohibited under the Municipal Regional NPDES Permit and city code. Violations can trigger administrative penalties, abatement costs, and Clean Water Act enforcement..

Also covered: Flood Zones (strict). See the full environmental rules guide for Brentwood for details.

Animal Ordinances

Breed Restrictions: Brentwood enforces Contra Costa County's behavior-based dangerous and vicious dog ordinance through Animal Services. Any dog that bites, attacks, or threatens a person or animal can be declared Potentially Dangerous or Vicious, triggering mandatory containment, muzzle, insurance, and microchip requirements.

Also covered: Livestock (permissive), Pet Limits (moderate), Beekeeping (permissive). See the full animal ordinances guide for Brentwood for details.

Fence Regulations

Pool Barriers: Brentwood pool barriers must comply with California Health & Safety Code §115920-115929 and the California Building Code. Requirements include a 60-inch minimum barrier, self-closing/self-latching gates, no climbable features, and at least two additional safety features for pools built after 2007..

Also covered: Height Limits (moderate), Retaining Walls (moderate), Material Restrictions (permissive). See the full fence regulations guide for Brentwood for details.

Short-Term Rentals

Noise Rules: Brentwood prohibits short-term rentals citywide under Municipal Code Chapter 17.796 (Ord. 1079, adopted Dec 10, 2024), so STR-specific noise rules do not apply.

Also covered: Taxes & Fees (strict), Parking Rules (moderate), Registration Rules (moderate). See the full short-term rentals guide for Brentwood for details.

Rental Property Rules

Mold Disclosure: California's Toxic Mold Protection Act requires Brentwood landlords to disclose known visible mold that exceeds health thresholds. Landlords must maintain rental units free of mold conditions that affect habitability under Civil Code 1941.7.

Also covered: Lead Paint Disclosure (moderate), Rental Registration (moderate). See the full rental property rules guide for Brentwood for details.

Trash & Recycling

Illegal Dumping: Illegal dumping in Brentwood is a misdemeanor and civil violation under Municipal Code Chapter 8.12 and California Penal Code 374.3. Fines start at 100 dollars for first offenses and escalate to thousands plus cleanup costs for commercial dumping.

Also covered: Bin Placement Rules (moderate), Recycling Requirements (moderate), Pickup Rules & Schedules (moderate). See the full trash & recycling guide for Brentwood for details.

Curfew Laws

Juvenile Curfew: Brentwood enforces a juvenile curfew prohibiting minors under 18 from being in public places between 10 PM and 5 AM, with common exceptions for employment, emergencies, and accompanying adults. Violations are infractions handled through diversion or parental notification.

Also covered: Park Curfew (strict). See the full curfew laws guide for Brentwood for details.

HOA Rules

HOA vs. City Rules: In Brentwood, many neighborhoods are governed by HOAs under the Davis-Stirling Common Interest Development Act (California Civil Code 4000 et seq.) in addition to city ordinances. HOA CC&Rs are private contracts that can impose stricter rules than Brentwood Municipal Code.

Also covered: HOA Fines & Enforcement (moderate), HOA Disputes (moderate). See the full hoa rules guide for Brentwood for details.

Swimming Pools & Spas

Safety Rules: All residential pools and spas in Brentwood must comply with the federal Virginia Graeme Baker Pool and Spa Safety Act and California Health and Safety Code requirements for anti-entrapment drain covers. Single main drains must be paired with a second means of preventing suction entrapment (for example, SVRS).

Also covered: Above-Ground Pools (moderate), Fencing Requirements (strict). See the full swimming pools & spas guide for Brentwood for details.

Solar Energy

HOA Restrictions: California Civil Code §714 (the Solar Rights Act) overrides HOA restrictions that would prohibit residential solar panels or make them significantly more expensive or less efficient. Brentwood HOAs must approve reasonable solar installations, and any restriction reducing system efficiency by more than 10% is void..

Also covered: Panel Permits (permissive). See the full solar energy guide for Brentwood for details.

Drone Rules

Recreational Drones: California Civil Code 1708.8 makes it a civil tort to use a drone to capture images or recordings of someone in a private setting. Brentwood also enforces trespass and peeping laws against invasive drone use.

Parking Rules

Commercial Vehicle Restrictions: Brentwood restricts overnight parking of commercial vehicles exceeding 10,000 lbs gross vehicle weight rating in residential zones. Box trucks, semi-trailers, dump trucks, and similar heavy vehicles cannot be stored on residential streets or driveways except for active loading, unloading, or service calls..

Also covered: Street Parking Limits (moderate), RV & Boat Parking (strict). See the full parking rules guide for Brentwood for details.

Property Maintenance

Property Blight: Brentwood prohibits junk, wrecked, or inoperable vehicles stored in public view under Municipal Code Chapter 8.30. Vehicles must be operable, currently registered, and not in a state of major disassembly.

Outdoor Lighting

Dark Sky Rules: Brentwood's zoning and development standards include outdoor lighting requirements aimed at minimizing light pollution and glare into neighboring properties and the night sky. Fixtures on new development must generally be full-cutoff or shielded, and light trespass onto adjacent residential lots is limited..

Also covered: Light Trespass (moderate). See the full outdoor lighting guide for Brentwood for details.

Garage & Yard Sales

Garage Sale Permits: Brentwood does not require a permit for residential garage sales of personal household items. Signs must follow the yard-sign rules (private property only, removed after sale).

Also covered: Frequency Limits (moderate). See the full garage & yard sales guide for Brentwood for details.

Building Setbacks & Zoning

Setback Rules: Corner lots in Brentwood have two street-facing frontages, each treated as a 'front yard' for setback and fence-height purposes. A sight-visibility triangle at the corner must be kept clear of obstructions above approximately 3 feet to preserve safe traffic visibility..

Soliciting & Door-to-Door

Solicitor Permits: Door-to-door commercial solicitors in Brentwood must obtain a Solicitor Permit from the Police Department and carry photo ID while soliciting. Solicitation hours are limited to 9 AM to 8 PM.

Also covered: No-Knock Registry (moderate). See the full soliciting & door-to-door guide for Brentwood for details.

What to Do With This Information

Whether you are renting, buying, or renovating in Brentwood, knowing the local rules upfront saves headaches later. Dig into the individual ordinance pages linked above for the complete picture, including fines and exemptions.