Shed permit rules in Fullerton, CA — also referred to as storage shed, backyard shed, or accessory building regulations — set size limits, setbacks, and when a building permit is required.
Fullerton regulates accessory structures through residential development standards in FMC Title 15. Small sheds under 120 square feet may be exempt from building permits but must comply with zoning setbacks. Larger structures require permits.
Under FMC Title 15 residential development standards, accessory structures must comply with setback requirements for the applicable zone. Detached garages, sheds, workshops, and storage buildings are subject to side and rear yard setback standards. Small accessory structures under 120 square feet in floor area may be exempt from building permit requirements under the California Residential Code but must still comply with zoning setback requirements. Structures exceeding 120 square feet require building permits. Accessory structures must be subordinate to and associated with the primary dwelling. They may not be used for habitation unless approved as an ADU. Height is limited by the standards in the applicable zone classification. Contact Building and Safety at (714) 738-6850 for permit requirements.
Building accessory structures without permits or in violation of setbacks may result in stop-work orders, required removal, and fines.
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