Chickens & Livestock: Antioch vs Brentwood
How do chickens & livestock rules compare between Antioch, CA and Brentwood, CA?
Brentwood has fewer restrictions than Antioch.
Antioch, CA
Contra Costa County
Antioch allows backyard chickens in residential zones with limits on quantity (typically 4-6 hens), a prohibition on roosters, coop setback requirements from property lines and dwellings, and sanitary maintenance standards to prevent odor and pest issues.
View full Antioch rules →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 →Key Facts Comparison
| Fact | Antioch | Brentwood |
|---|---|---|
| Typical Limit | 4–6 hens | - |
| Roosters | Prohibited in residential zones | Prohibited in residential |
| Coop Setback | 10 ft from lot line, 25 ft from dwellings | - |
| Slaughter | Prohibited on residential lots | - |
| HOA Rules | May be stricter than city | - |
| Residential limit | - | ~4-6 hens typical |
| 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.
Antioch FAQ
Can I keep a rooster in my backyard?
No. Roosters are prohibited in Antioch residential zones due to crowing noise. Only hens are permitted, and only in the limited quantities set by zoning.
Do I need a permit to build a chicken coop?
Small coops under 120 sq ft typically don't require a building permit but must comply with setback requirements. Larger structures require a building permit. Check with Antioch Community Development for specifics.
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.
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