South Carolina enforces the 2009 IECC commercial

Record of adoption

In force since

Jan 1, 2013

Legal citation

S.C. Code Ann. 6-10-30

Adopted by

General Assembly (statute); Council adopted Apr 2, 2012, per its table

Second reading

Agreed Oct 19, 2026

Applies

Statewide

State amendments

None

Also called

Energy Standard Act

DOE adds ASHRAE 90.1-2007 for commercial; the state sources read name only the 2009 IECC (which allows that standard as a compliance path). Council staff reported possible commercial energy code updates in 2026.

Exceptions

• Local jurisdictions may seek a Council variance (6-10-40)

How South Carolina adopts the IECC commercial

• Statute
• The legislature names the edition in statute

Same as residential: the statute names the 2009 IECC. Staff told the Council in February 2026 of ‘possible updates to the energy codes related to commercial construction’; no bill or rule was found.

Cycle. Irregular; set by statute.

Laws, rulings, and other actions

1. UndatedLegislation
   S.C. Code Ann. 6-10-30 (Energy Standard, as amended by a 2012 act)

   Statute adopts the 2009 IECC as the state Energy Standard; the 2012 act replaced 2006 with 2009.

   Enacted, in force

   scstatehouse.gov (opens in a new tab)

How it was checked

Verified

Two separate readings of the state’s own record agree, and the passage is on file word for word.

Read twice: a second, blind reading of the state’s record agreed with the first on Oct 19, 2026.

The state’s record was last read on Oct 19, 2026, from four source pages.

Evidence 4 sources

Sources for the record itself come first, the state’s own records ahead of others. A label marks a source about something else, such as an exception. A source marked secondary is not the state’s own record.

• “The 2009 edition of the International Energy Conservation Code is adopted as the Energy Standard.”

• “2020 National Electrical Code* October 6, 2021 January 1, 2023 2009 International Energy Conservation Code¹ April 2, 2012 January 1, 2013”

• “On August 26, 2025, the South Carolina Building Codes Council adopted the latest editions of the mandatory codes”

• About the note

Tracker cross-checks

Code adoption trackers are a cross-check. They are not South Carolina’s own record.

• DOE’s energycodes.govCross-checkAgrees with the record

  Current State Code: 2009 IECC and ASHRAE 90.1-2007; Effective Date 01/01/2013; Mandatory Statewide

  energycodes.gov (opens in a new tab)Read Oct 17, 2026

Related pages

• See South Carolina’s IECC commercial on the map
• IECC commercial adoption in every state
• All six codes in South Carolina

Other codes in South Carolina

• NEC2020 NECVerified
• IBC2021 IBCVerified
• IRC2021 IRCVerified
• IFC2021 IFCVerified
• IECC residential2009 IECCVerified