International Energy Conservation Code, commercial
Utah enforces the 2024 IECC commercial
The 2024 International Energy Conservation Code (IECC) for commercial buildings has been in force in Utah since Jul 1, 2026. It applies statewide. Adopted by Utah Legislature (edition named in statute). The legal citation is Utah Code 15A-2-103(1)(h); H.B. 65 (2026 General Session).
Record of adoption
Edition in force
2024 IECC
Verified
- In force since
- Legal citation
- Utah Code 15A-2-103(1)(h); H.B. 65 (2026 General Session)
- Adopted by
- Utah Legislature (edition named in statute)
- Second reading
- Applies
- Statewide
Statute names the 2024 IECC effective 07/01/26. DOE lists ASHRAE 90.1-2022 alongside the 2024 IECC.
How Utah adopts the IECC commercial
The Legislature amends 15A-2-103(1)(h) by bill after the Uniform Building Code Commission report and interim committee review.
Cycle. Follows the ICC triennial cycle with a lag; 2021 to 2024 effective Jul 1, 2026.
Laws, rulings, and other actions
- LegislationH.B. 65 Construction Code Amendments2026 General Session
Moves 15A-2-103 from the 2021 to the 2024 IBC, IECC, plumbing, mechanical, fuel gas, existing building and pool codes; leaves IRC at 2021 and NEC at 2023.
Passed; most sections effective Jul 1, 2026, 15A-3-107 and 15A-3-108 effective on governor’s approval
le.utah.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 .
The state’s record was last read on , from two source pages.
Evidence 2 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.
“15A-2-103 (Effective 07/01/26).”
H.B. 65 Construction Code Amendments, Enrolled Copy (2026 General Session)Utah State Legislaturele.utah.gov (opens in a new tab)BillRetrieved H.B. 65 Construction Code Amendments, Enrolled Copy (2026 General Session)Utah State Legislaturele.utah.gov (opens in a new tab)BillRetrieved
Tracker cross-checks
Code adoption trackers are a cross-check. They are not Utah’s own record.
Utah, State Energy Code StatusCross-checkU.S. DOE Building Energy Codes Programenergycodes.gov (opens in a new tab)Tracker, secondaryRetrieved
DOE’s energycodes.govCross-checkAgrees with the record
Commercial Current State Code: “2024 IECC and ASHRAE 90.1-2022”; Effective Date: “07/01/2026”; Enforcement: “Mandatory Statewide”