Charleston County Building Services manages permits for unincorporated areas, while incorporated municipalities like the City of Charleston, Mount Pleasant, and North Charleston operate their own independent building and zoning departments. The county enforces strict coastal and flood zone regulations, requiring additional elevation certificates and compliance with FEMA standards for properties within the Special Flood Hazard Area.
How this fits with the state
The state authority here is South Carolina Contractor's Licensing Board; Residential Builders Commission. The county file does not replace that — it adds the permit office, local overlays, and the actual filing path.