Adopted edition
IRC 2021
Inherits from Charleston County county floor.
SC · City
Charleston, SC.
Charleston, SC — building code: IRC 2021.
Design wind speed
160 mph
ASCE 7 Risk Cat II, 3-second gust at 33 ft.
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 Building Department
www.charleston-sc.gov/324/Building-InspectionsZIP coverage
16 ZIP codes inside Charleston.
Each ZIP resolves to the correct city + county + state on every parcel lookup. Multi-jurisdiction parcels pick up amendments from each layer.
29401 29402 29403 29406 29407 29409 29412 29413 29414 29416 29417 29422 29423 29424 29425 29492
Working in Charleston?
Pull an address-level code packet for any parcel in Charleston. SkyCanvass resolves the address, looks up the Charleston-specific amendments and the Charleston County county and South Carolina state floor, then emits a cited packet ready for permit submittal.
See the Charleston County county overview, or the South Carolina state directory .
Pull a Charleston 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.