Shed Rules: Brentwood vs El Cerrito
How do shed rules rules compare between Brentwood, CA and El Cerrito, CA?
Brentwood and El Cerrito have similar restriction levels.
Brentwood, CA
Contra Costa County
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. Structures over 120 sq ft or with utilities require a building permit and Community Development review.
View full Brentwood rules →El Cerrito, CA
Contra Costa County
In unincorporated Contra Costa, a detached one-story accessory building used as a tool/storage shed of 120 sq ft or less does not require a building permit. Zoning setbacks still apply—typically 3 feet from side/rear property lines in R-zones—and any shed with electrical or plumbing needs a permit.
View full El Cerrito rules →Key Facts Comparison
| Fact | Brentwood | El Cerrito |
|---|---|---|
| - | - | |
| Permit-exempt size | - | 120 sq ft and under 12 ft tall |
| Side/rear setback | - | 3 ft typical residential |
| Electrical/plumbing | - | Triggers permit regardless of size |
| Lot coverage | - | Counts toward 35-40% cap |
| WUI rule | - | Ignition-resistant materials recommended |
Highlighted rows indicate differences between cities.
Brentwood FAQ
El Cerrito FAQ
Do I need a permit for a 100 sq ft shed with an outlet?
Yes. Any shed with electrical service, regardless of size, needs an electrical permit, and the overall structure must be inspected.
Can I place a shed on the property line?
No. Even permit-exempt sheds must meet the zoning setback—typically at least 3 feet from the side and rear property lines.
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