South Carolina Adoption of Mandatory Codes

August 30, 2022

On October 6, 2021, the South Carolina Building Codes Council adopted the latest editions of the mandatory codes and appendices with modifications, as referenced in S.C. Code Ann. §6-9-50 (1976, as amended), to be enforced by all municipalities and counties in South Carolina. The Council established the implementation date for local jurisdictions as January 1, 2023.

The adopted modifications and the mandatory codes are as follows:

  • 2021 South Carolina Building Code or the 2021 International Building Code with SC modifications
  • 2021 South Carolina Residential Code or the 2021 International Residential Code with SC modifications
  • 2021 South Carolina Fire Code or the 2021 International Fire Code with SC modifications
  • 2021 South Carolina Plumbing Code or the 2021 International Plumbing Code with SC modifications
  • 2021 South Carolina Mechanical Code or the 2021 International Mechanical Code with SC modifications
  • 2021 South Carolina Fuel Gas Code or the 2021 International Fuel Gas Code with SC modifications
  • 2009 South Carolina Energy Conservation Code
  • 2020 National Electrical Code (NFPA 70) with SC modifications

Modular building manufacturers who have plans approved under the 2018 SC Building Codes will be able to access and order labels for those approved plans until January 1, 2023. Effective January 1, 2023, all production and subsequent labels must have state approval under the applicable 2021 SC Building Codes or be resubmitted for approval. Per S.C. Regs 8-605(4), any structure labeled under the 2018 code cycle prior to January 1, 2023 “shall be deemed to comply with the requirements of all building codes, ordinances, or regulations which govern building construction, enacted by any local government.”

The Modular Building Program has published new forms on its website for licensing, plan review and label applications, and reports. Any forms submitted as of January 1, 2023 must be on the new forms or they will be returned without processing.

Print and PDF download versions of the 2021 South Carolina codes are available for pre-order from the ICC website.

The International Codes are to be used in conjunction with the latest code modifications approved by the Council. Only the modifications approved and listed on the Council’s website are valid for use in the State. Building code modifications that have not been approved by the Council are invalid and cannot be adopted, employed or enforced by municipalities and counties.

The latest edition of ICC/ANSI A117.1, Accessible and Useable Buildings and Facilities, is adopted by the Accessibility Act, S.C. Code Ann. § 10-5-210 et seq., and is mandatory for use in all municipalities and counties within the State.

The Building Energy Standard Act is adopted by statute and mandatory for use in all jurisdictions within the state.