Adopted edition
IRC 2021 (SC amendments)
Inherits from SC state floor.
SC · County
Charleston County, SC.
Charleston County is a coastal SC jurisdiction — design wind 160 mph.
Design wind speed
160 mph
ASCE 7 Risk Cat II, 3-second gust at 33 ft. Drives fastener spacing, hold-downs, and opening protection.
Climate zone (IECC)
3A
Drives R-value, fenestration U-factor, and air-leakage envelope rules.
Special zones
- HVHZ
- WBDR
- WUI
- FEMA SFHA possible
Permit office
Charleston County County Building Department
Common amendments + overlays
What's specific to this county.
- §01 WBDR — Wind-Borne Debris Region rules trigger impact-rated glazing or shutters.
- §02 Coastal flood-zone overlays (FEMA AE/VE).
City directory
3 cities indexed in Charleston County.
Each city page lists the local amendments (if any), parent county, and the local permit office.
Working in Charleston County?
Pull an address-level code packet for any property in Charleston County. SkyCanvass resolves the parcel, looks up the adopted edition + the Charleston County-specific amendments listed above, and emits a cited packet ready for permit submittal.
See the South Carolina state overview for the broader context, or browse the state directory.
Pull a Charleston County code packet.
Free to start — property lookups, state code access, the hail map, and your first storm report on us. No credit card required to look up an address.