Shed permit rules in Mission Viejo, CA — also referred to as storage shed, backyard shed, or accessory building regulations — set size limits, setbacks, and when a building permit is required.
Mission Viejo regulates sheds and accessory storage structures through building and zoning codes. Small sheds under 120 square feet typically do not require a building permit, but must comply with setback and height requirements and often need HOA approval.
Under the California Building Code as adopted by Mission Viejo, accessory structures (sheds, storage buildings) under 120 square feet and single-story do not require a building permit, though they still must meet zoning setback requirements. Structures over 120 square feet require a building permit from the Building Division. All sheds must comply with zoning setbacks, typically maintaining minimum distances from property lines, and height limits applicable to the zone. Sheds cannot be placed in required front yard setback areas. Materials and design should be compatible with the primary dwelling. In most Mission Viejo neighborhoods, HOA architectural review approval is required regardless of whether a city permit is needed.
Unpermitted structures over 120 square feet may result in code enforcement action including removal orders. HOA violations are enforced separately through the association's enforcement process.
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Side-by-side rule comparisons with other cities in Orange County.
See how other cities in Orange County handle shed rules.
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