Shed permit rules in Topanga, CA — also referred to as storage shed, backyard shed, or accessory building regulations — set size limits, setbacks, and when a building permit is required.
Small accessory structures under 120 square feet in unincorporated LA County generally do not require a building permit. Larger structures must comply with Title 26 building code and Title 22 zoning setbacks.
Accessory structures under 120 square feet and single-story in height are generally exempt from building permits in unincorporated LA County under Title 26 (Building Code), consistent with California Building Code exemptions. These structures must still comply with Title 22 zoning setback requirements — typically 5 feet from side and rear property lines. Structures over 120 square feet require a building permit from the Department of Public Works, Building and Safety Division. All accessory structures must maintain minimum clearance from the primary dwelling and meet fire-resistive construction standards if within fire hazard zones. Metal storage sheds, prefabricated buildings, and wood-frame structures are all subject to these rules. Height is generally limited to 15 feet for accessory structures in residential zones.
Unpermitted structures over 120 square feet may be subject to demolition orders and daily fines starting at $100. Zoning setback violations require removal or modification at the owner's expense.
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Side-by-side rule comparisons with other cities in Los Angeles County.
See how other cities in Los Angeles County handle shed rules.
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