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

Mariposa County Code section 17.108.130 (Structure Location) sets the setbacks that apply to 'all buildings with roof area exceeding one hundred twenty (120) square feet.' The front-yard setback is a minimum of 25 feet from the front property line or edge of any public street/easement, and 55 feet from the road centerline. Side-yard and rear-yard setbacks are each 'a minimum of twenty-five (25) feet or ten percent (10%) of the lot width [or depth], whichever is less.' Accessory buildings and structures are a permitted use in the zones listed under section 17.108.060(E). Maximum structure height under section 17.108.140 is 35 vertical feet above natural grade, with accessory farm buildings allowed up to 60 feet. The County notes that whether a specific project needs a permit depends on its size and type; consult the Building Department (building@mariposacounty.gov, 209-966-3934) and confirm your zone's standards before building. Because the County is entirely rural/unincorporated, a single set of county zoning standards applies countywide rather than separate city codes.