Orange County, CA Accessory Structures: Shed Rules (2026)

Sheds and similar detached accessory structures in unincorporated Orange County are governed by Comprehensive Zoning Code Sec. 7-9-116 (Accessory uses and structures), which applies across all districts, planned communities, and specific plans. Under Sec. 7-9-116.1(h), one small, detached, non-habitable accessory structure per 7,200 sq ft of building-site area is exempt from the section's site-coverage and setback requirements if it contains less than 120 sq ft of fully enclosed floor area, is no more than 8 feet in height, sits at least 3 feet from the rear and side property lines, and is at least 6 feet from any other building. Such a structure may not be placed in any front-yard area, and only one is excluded when calculating lot coverage; any additional structure up to 120 sq ft needs a Zoning Land Use Certificate. Larger or taller structures must meet the general standards: accessory structures within required setback areas are limited to 12 feet in height, dropping to 8 feet if sited within 3 feet of a property line. Detached structures must keep their building face at least 3 feet from any other structure, with eaves no closer than 2 feet apart. Note these are zoning standards; a separate building permit may still be required under the Building Code based on size.