Chickens & Livestock: Brentwood vs San Ramon
How do chickens & livestock rules compare between Brentwood, CA and San Ramon, CA?
Brentwood has fewer restrictions than San Ramon.
Brentwood, CA
Contra Costa County
Backyard chickens are permitted in Brentwood on most residential lots, with limits commonly of 4-6 hens, no roosters, and coop setbacks from neighboring structures. Agricultural-zoned parcels have no hen limit. Under BMC Title 17, coops must be kept sanitary and meet setback requirements from property lines.
View full Brentwood rules →San Ramon, CA
Contra Costa County
San Ramon permits up to 6 backyard hens on residential lots with coop setback requirements (typically 10-20 feet from property lines and 25+ feet from neighboring dwellings). Roosters are prohibited. Coops must be kept clean to avoid odor and vector nuisance. HOA CC&Rs in master-planned communities frequently ban chickens entirely.
View full San Ramon rules →Key Facts Comparison
| Fact | Brentwood | San Ramon |
|---|---|---|
| Residential limit | ~4-6 hens typical | - |
| Roosters | Prohibited in residential | - |
| Coop setback (structures) | ~15-25 ft | - |
| Coop setback (property line) | ~5-10 ft | - |
| Ag zones | No hen limit, roosters OK | - |
| - | - |
Highlighted rows indicate differences between cities.
Brentwood FAQ
Can I have a rooster in Brentwood?
Not in residential zones. Roosters are only permitted on parcels zoned A (Agricultural). In residential areas, roosters are considered a noise nuisance under BMC Chapter 9.32 and Title 17.
Do I need a permit for a chicken coop?
A building permit is required for coops over 120 sq ft (standard accessory structure threshold). Smaller coops don't need a building permit but still must meet zoning setback requirements.
San Ramon FAQ
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