Brentwood fences are limited to 3.5 feet in front yards and 6 feet in side and rear yards. Fences over 6 feet require a building permit and may need a zoning variance. Corner lots have additional visibility triangle restrictions to protect sight lines at intersections.
Brentwood regulates fence heights through BMC Title 17 (Zoning), specifically the development-standards chapters for each residential zone. Standard height limits are 3.5 feet (42 inches) in front-yard setbacks, 6 feet in side and rear yards, and 8 feet maximum with a building permit. Fences exceeding 6 feet require building permits under the California Building Code and may require zoning review if they affect views or setbacks. Corner lots have a visibility (sight) triangle requirement at the street intersection that limits fencing, landscaping, and other visual obstructions to 3 feet in height within a triangle typically measured 25-30 feet along each curb from the corner. Agricultural zones may permit taller perimeter fencing (up to 8 feet) without a permit to contain livestock. Violations are addressed by Code Enforcement; owners typically receive a correction notice before citation.
Contact your local code enforcement office for specific penalty information.
Brentwood, CA
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Side-by-side rule comparisons with other cities in Contra Costa County.
See how other cities in Contra Costa County handle height limits.
See how Brentwood's height limits rules stack up against other locations.
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