Fences under 6 ft do not require a building permit in unincorporated LA County. Fences over 6 ft require permits from Building & Safety. Department of Regional Planning approval may be needed depending on fence location (front yard, corner lot). Block walls over 6 ft always require permits.
Fences under 6 feet in height do not require a building permit in unincorporated LA County. Fences over 6 feet require a building permit from LA County Building & Safety and must comply with Title 22 setback requirements. Front yard fences are limited to 42 inches (3.5 feet) in most residential zones. Pool barrier fences have separate requirements under CA Building Code Title 24. Retaining walls over 4 feet (from footing to top of wall) require a building permit and engineering plans. All fences must maintain sight distance triangles at street intersections.
Building a fence over 6 feet without a permit is a code violation. Building & Safety issues a notice to correct with 30 days to either obtain a retroactive permit (double fees) or remove the fence. Fences blocking sight distance at intersections may be ordered removed immediately for public safety. Administrative fines of $100-$500 per day apply for uncorrected violations.
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