In unincorporated LA County, privacy fences up to 6 feet are allowed in side and rear yards without a building permit. Front yard fences are limited to 42 inches. Fences over 6 feet require a permit from the Department of Public Works, Building and Safety Division.
Under the LA County Building Code (Title 26) and Zoning Ordinance (Title 22), fences in unincorporated areas are subject to height limits. In residential zones, fences and walls up to 6 feet in height are permitted in side and rear yards without a building permit. Front yard fences and walls are limited to 42 inches (3.5 feet) within the required front setback area to maintain street visibility. Fences over 6 feet require a building permit. The Department of Regional Planning may also need to approve fences based on location and zoning district. Retaining walls that also serve as fences have combined height limits. Solid privacy fences (wood, vinyl, composite) are allowed; materials must comply with fire-resistance requirements in Very High Fire Hazard Severity Zones. HOA rules may impose additional restrictions in some unincorporated communities.
Building a fence exceeding height limits without a permit may result in a notice of violation, required removal or modification, and potential fines. Double permit fees may apply for work done without permits.
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