Shed permit rules in Dorchester County, SC — also referred to as storage shed, backyard shed, or accessory building regulations — set size limits, setbacks, and when a building permit is required.
A small shed in unincorporated Dorchester County, commonly under about 200 square feet, usually needs no building permit, but it must still meet the zoning district's setbacks. Larger or wired outbuildings need permits.
Dorchester County exempts small, non-habitable accessory buildings from a building permit up to a modest size threshold, commonly around 200 square feet in South Carolina, but the shed must still keep the side and rear setbacks of its zoning district. A larger shed, garage, or workshop needs the full building permit built to the 2021 SC Residential Code, and any electrical hookup needs its own permit. A shed cannot be lived in. In a special flood hazard area, even an accessory building is regulated: the county's flood ordinance controls its placement, anchoring, and elevation.
A shed over the size threshold built without a permit is illegal construction. A shed placed inside the required setback, or one used as living space, is subject to correction regardless of size.
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See how Dorchester County's shed rules rules stack up against other locations.
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