South Carolina Residential Code 2021 Edition

The 2021 South Carolina Residential Code (SCRC) is the official, state‑adapted version of the 2021 IRC, customized with legally enforced South Carolina amendments. It regulates residential construction—including one‑ and two‑family dwellings, townhouses, and accessory buildings up to three stories—and became statewide law as of January 1, 2023. Notably, the addition of Appendix AQ — Tiny Homes (≤ 400 sq ft)—supports modern housing trends by easing code requirements in areas such as stairs, lofts, and rescue openings. At its core, the SCRC ensures essential standards for safety, occupant well‑being, and emergency readiness are consistently maintained across South Carolina.

Key Aspects:

• Structural Requirements: Provisions for foundations, framing, and load-bearing elements to ensure the safety and stability of residential structures.
  
• Energy Efficiency: Updated energy efficiency requirements to promote sustainable building practices and reduce energy consumption.
  
• Fire Safety: Enhanced fire safety measures, including requirements for smoke alarms, fire-resistant materials, and escape routes.
  
• Accessibility: Standards to ensure that residential buildings are accessible and accommodating for individuals with disabilities.
  
• State-Specific Amendments: Modifications to the national IRC to address South Carolina’s unique environmental and geographical conditions.

Highlights:

• South Carolina Modifications
• Tiny Home Provisions (Appendix AQ)

About ICC

International Code Council is a leading organization dedicated to developing a single set of comprehensive, coordinated national model construction codes. To date, 48 U.S. states have adopted various international codes from the International Code Council.

Other Works:

• South Carolina Building Code 2021 Edition
• South Carolina Fuel Gas Code 2021 Edition
• South Carolina Mechanical Code 2021 Edition