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Building Safety

Building Safety in Brentwood, CA: What Residents Actually Need to Know

By CityRuleLookup Editorial Team

If you live in Brentwood or are thinking about moving there, building safety are one of those things you probably won't think about until they affect you directly. Brentwood has 6 specific rules on the books covering different aspects of building safety, and some of them might surprise you.

Electrical Permits

Brentwood adopts Part 3, the California Electrical Code, as part of the 2025 California Building Standards Code under Municipal Code Section 15.04.010. Electrical permit fees are set by city council resolution, and the community development department keeps the adopted code on file for anyone pulling a wiring permit to review.

Key details: Adopting section: BMC § 15.04.010(A), Part 3. Code adopted: 2025 California Electrical Code. Code on file at: Community Development Department. Fees: Set by city council resolution. Latest update: Ord. 1090, effective 12/9/2025.

Under Section 15.04.010(D), the city may enforce Chapter 15.04, including its adopted Electrical Code, by any means available under the California Building Standards Codes or under Brentwood Municipal Code Title 1 (General Provisions). That gives the building official both code-specific remedies, such as stop-work and correction notices, and the city's general citation and abatement authority for unpermitted electrical work.

Building Permits

Brentwood adopts the 2025 California Building Standards Code by reference under Municipal Code Section 15.04.010, covering the Building Code, Residential Code and every other title-24 part for construction citywide. Permits and fees are administered by the community development department, with fees set by city council resolution rather than fixed dollar amounts in the code.

Key details: Adopting section: BMC § 15.04.010. Code edition: 2025 California Building Standards Code. Permits issued by: Community Development Department. Fees: Set by city council resolution. Latest amendment: Ord. 1090, effective 12/9/2025.

Section 15.04.010(D) authorizes the city to enforce Chapter 15.04 by any means set out in the California Building Standards Codes themselves or in Brentwood Municipal Code Title 1 (General Provisions), which covers citations, administrative penalties and abatement. Unpermitted or noncompliant construction can also be declared a substandard or dangerous building under the city's Chapter 15.04 violation findings, exposing the owner to abatement proceedings in addition to any building-code citation.

Plumbing Permits

Brentwood adopts Part 5, the California Plumbing Code, by reference under Municipal Code Section 15.04.010, then locally amends CPC Section 1208.5 in Section 15.04.020 to ban underground metallic gas piping unless the chief building official approves it after a soils analysis for corrosive acid levels.

Key details: Adopting section: BMC § 15.04.010(A), Part 5. Local amendment: BMC § 15.04.020, CPC § 1208.5. Underground metal gas piping: Needs chief building official approval. Required study: Soils (pH) analysis for corrosivity. Fees: Set by city council resolution.

Section 15.04.010(D) lets the city enforce Chapter 15.04, including the adopted Plumbing Code and the Section 15.04.020 gas-piping amendment, through any remedy set out in the California Building Standards Codes or in Brentwood Municipal Code Title 1 (General Provisions). Installing metallic gas piping underground without the chief building official's approval and a qualifying soils analysis is a direct violation of the local CPC 1208.5 amendment, independent of any base Plumbing Code violation.

Green Building Code

Brentwood enforces the California Green Building Standards Code, Title 24 Part 11, as part of the 2025 California Building Standards Code it adopts by reference for every building permit issued in the city.

Key details: Governing chapter: BMC Chapter 15.04. Code edition adopted: 2025 California Building Standards Code. Green building part: Title 24, Part 11 (CALGreen). Fee authority: set by city council resolution. Public copy location: community development department.

Failing to meet California Green Building Standards Code requirements on a permitted project is enforced the same as any other Building Standards Code violation under Section 15.04.010(D): the community development department can withhold permit approval, red-tag work that proceeds without meeting the adopted standards, or pursue remedies under Brentwood Municipal Code Title 1, which covers general citations and misdemeanor or infraction penalties for code violations citywide.

Fire Sprinkler Requirements

Brentwood only requires fire sprinklers in an accessory dwelling unit when the primary house on the same lot is already required to have them, and building an ADU never forces the existing primary home to add sprinklers it didn't already need. Citywide, Brentwood repealed its standalone residential sprinkler mandate in Chapter 15.64.

Key details: ADU sprinkler trigger: Only if primary dwelling requires them. Retrofit protection: ADU never forces primary home retrofit. Citywide mandate: Ch. 15.64 sprinkler law repealed (Ord. 931). Governing code: BMC Title 15 building/fire codes. Citation: BMC § 17.715.050(K).

An ADU built without required sprinklers where the primary dwelling already needed them is a building code violation enforced through the permit and inspection process under Brentwood Municipal Code Title 15; the chief building official can withhold final inspection sign-off and a certificate of occupancy until the fire suppression system passes inspection. Because the ADU chapter sits in Title 17, a permit issued contrary to its terms is void under § 17.890.004.

If you are coming from a city with tighter rules, you will find Brentwood gives residents more flexibility on fire sprinkler requirements.

Lead Paint

Brentwood follows federal and California lead-paint disclosure rules for pre-1978 rental housing. Landlords must provide tenants with the EPA pamphlet and a written disclosure of known lead-based paint before lease signing. The city does not add local requirements beyond state and federal law.

Key details: Applies to rentals: Applies to rentals built before 1978. Lead Paint Disclosure: EPA pamphlet and disclosure form required before lease. RRP Rule applies: RRP Rule applies to renovation of painted surfaces. Enforcement: Enforced by Contra Costa Health Services for hazards. No additional Brentwood-specific: No additional Brentwood-specific ordinance.

The Bottom Line

Brentwood's building safety rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Brentwood is broadly strict or permissive.

This guide is based on Brentwood's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.