South Carolina Permit & Stamping Requirements
Requirements vary by region, code cycle, seismic zone, and wind or snow load. Here is what typically drives design for South Carolina projects.
What Drives Design in South Carolina
South Carolina projects are governed primarily by wind uplift and coastal exposure.
- ✓ Wind load design per ASCE 7 exposure category
- ✓ HVHZ or TDI windstorm documentation where applicable
- ✓ Site grading and stormwater drainage plans
Exact code edition and local amendments vary by city and county. We confirm the specific requirements for your address before drafting.
Code in effect in South Carolina
South Carolina enforces statewide mandatory codes adopted by the Building Codes Council. The 2021 IRC and IBC with South Carolina modifications have been in effect since January 1, 2023, with the 2009 IECC as the energy code. The Council approved modifications for the 2024 editions in August 2025, so confirm which edition applies when you submit.
What to plan for
- ✓ Design wind speed and seismic category are set county by county using the Council's maps.
- ✓ Parts of the state, including the Charleston area, carry meaningful seismic design requirements.
- ✓ Only modifications approved by the Building Codes Council can be enforced by local jurisdictions.
Code information last verified September 2026. Codes change, so we confirm the edition in force for your address before drafting.
Frequently asked questions about South Carolina permits
Which code edition does South Carolina use?
The 2021 IRC and IBC with South Carolina modifications have been mandatory since January 1, 2023. The Council has approved modifications for the 2024 editions, so we confirm the edition in force for your submittal date.
Does my county have special wind or seismic requirements?
Very likely. South Carolina sets design wind speed and seismic category by county, and coastal and Lowcountry counties are typically the most demanding. We design to your county's criteria.
Sample Work & Other States
Foundation Plan
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Roof Framing Plan
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