LA County Title 22 zoning code limits fences in unincorporated areas to 42 inches in front yards and 6 feet in side and rear yards. Fences under 6 feet generally do not require a building permit but may need Regional Planning approval.
LA County zoning regulations under Title 22 set fence and wall height limits based on yard location. Front yard fences are limited to 42 inches (3.5 feet) in residential zones. Side and rear yard fences may be up to 6 feet tall. Corner lots may have sight-distance requirements limiting fence height near intersections. A building permit from the Department of Public Works is not required for fences under 6 feet in height, but Department of Regional Planning review may be needed depending on the location relative to setback lines. Fences over 6 feet require a building permit and must comply with structural requirements. Retaining walls that also serve as fences have combined height calculations. Material restrictions may apply in specific plan areas and historic preservation zones.
Building a fence without required permits or exceeding height limits may result in a code enforcement action requiring removal or modification. Fines for zoning violations typically start at $100 per day for non-compliance after notice.
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See how Los Angeles County's height limits rules stack up against other locations.
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