Building Safety in Brentwood, CA (2026)
5 verified building safety rules for Brentwood, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Smoke Alarms
All Brentwood dwelling units must have working smoke alarms under California Health and Safety Code 13113.7 and 13113.8. Alarms are required inside each sleeping room, outside each sleeping area, and on every level. At sale or lease, compliance must be certified. Battery-only alarms sold after July 1, 2015 must have a non-replaceable 10-year sealed battery.
Building Safety: Smoke Alarms
Heavy RestrictionsCalifornia Health and Safety Code § 13113.7 (Smoke Alarms)
13113.7. (a) (1) Except as otherwise provided in this section, smoke alarms, approved and listed by the State Fire Marshal pursuant to Section 13114 at the time of installation, shall be installed, in accordance with the manufacturer’s instructions in each dwelling intended for human occupancy. (2) For all dwelling units intended for human occupancy for which a building permit is issued on or a...
Carbon Monoxide Detectors
California Health and Safety Code 17926 requires carbon monoxide alarms in all dwelling units that have a fossil fuel appliance, fireplace, or attached garage. Alarms must be installed outside each sleeping area and on every level. Brentwood enforces through Building Division inspection for permitted work and by Code Enforcement. Seller disclosure of compliance is required at sale.
Building Safety: Co Detectors
Heavy RestrictionsElectrical 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. Like-for-like replacement of receptacles, switches, and fixtures typically does not require a permit.
Building Safety: Electrical Permits
Heavy RestrictionsPlumbing Permits
Brentwood requires plumbing permits for water heater replacements, repipes, sewer lateral work, gas line modifications, and most fixture relocations under the 2022 California Plumbing Code as adopted by the city. Like-for-like fixture swaps (faucets, toilets at the same location) generally do not require a permit, but water heaters always do.
Building Safety: Plumbing Permits
Some RestrictionsRoofing Permits
Brentwood requires a building permit for all roof covering replacement, re-roofing, and structural roof work per the 2022 California Building Code and California Residential Code as locally adopted. Class A fire-rated roofing materials are required citywide under CBC Chapter 7A because much of eastern Contra Costa County sits within or adjacent to Wildland-Urban Interface zones.
Building Safety: Roofing Permits
Some RestrictionsLooking for Contra Costa County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Brentwood city rules.
Building Safety in Contra Costa County →