Shed permit rules in Santa Ana, CA — also referred to as storage shed, backyard shed, or accessory building regulations — set size limits, setbacks, and when a building permit is required.
Santa Ana exempts one-story detached storage sheds under 120 square feet from building permit requirements. Larger structures require permits and must comply with zoning setbacks under SAMC Sec. 41-606 and 41-607. Accessory structures may not be located within 12 feet of an alley centerline.
Per the California Building Code and Santa Ana's building division, one-story detached accessory structures used as tool/storage sheds, playhouses, and similar uses are exempt from building permits if the floor area does not exceed 120 square feet. Even exempt structures must comply with zoning setback requirements. Under SAMC Sec. 41-606 and 41-607, attached accessory buildings must maintain the same setbacks as the main building. Detached dwelling units and main buildings must be at least 15 feet apart. No accessory structure may be located within 12 feet of the centerline of an alley. Lot coverage limits in the applicable zoning district may restrict total structure footprint. Retaining walls not over 4 feet high are also permit-exempt. Setback requirements vary by zoning district (R1, R2, etc.), so property-specific verification with the Planning Division is recommended.
Unpermitted structure over 120 sq ft: building code violation. Setback violation: code enforcement citation. Structures blocking alley access: mandatory removal or modification.
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Side-by-side rule comparisons with other cities in Orange County.
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