Shed permit rules in Charleston 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.
Detached sheds in unincorporated Charleston County must sit wholly to the rear of the house, at least three feet from any interior lot line and at least six feet from any dwelling. A zoning permit is triggered once impervious area grows past set thresholds.
ZLDR Sec. 6.5.8 lists sheds, gazebos, barns and similar structures as accessory structures. A detached accessory structure must be located wholly to the rear of the principal structure, at least six feet from any other dwelling (including those under construction) and at least three feet from any interior lot line in a residential district. It must also meet the district's front-setback requirement. On corner lots it cannot project in front of the adjacent lot's building line. A zoning permit is required when new impervious surface exceeds 120 square feet cumulatively in the Urban/Suburban Area. Municipalities set their own shed rules inside city limits.
Sheds placed in violation of setback or permit rules are zoning violations subject to correction orders and penalties under ZLDR Chapter 11, enforced by county code enforcement.
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