International Energy Conservation Code, commercial
Louisiana enforces the 2021 IECC commercial
The 2021 International Energy Conservation Code (IECC) for commercial buildings has been in force in Louisiana since Jul 1, 2023. It applies statewide. Adopted by Louisiana Uniform Construction Code Commission (formerly Louisiana State Uniform Construction Code Council). The legal citation is LAC 17:I.117.
Record of adoption
Edition in force
2021 IECC
International Energy Conservation Code (IECC) 2021 Edition (LAC 17:I.117)
Partial
- In force since
- Legal citation
- LAC 17:I.117
- Adopted by
- Louisiana Uniform Construction Code Commission (formerly Louisiana State Uniform Construction Code Council)
- Second reading
- Applies
- Statewide
- State amendments
- Major
- Also called
- LSUCC
DOE lists 2021 IECC and ASHRAE 90.1-2010 for commercial.
Exceptions
- All parishes are assigned to Climate Zone 2A for IECC compliance
Coming next
- 2024 IECCPartialPlanned for Jan 1, 2027ProposedNotice of Intent, Louisiana Register Vol. 52, No. 8, Aug 20, 2026
The notice names the IECC in its preamble among the 2024 I-codes.
How Louisiana adopts the IECC commercial
Commission rulemaking amending LAC 17:I.117, same as other LSUCC codes.
Cycle. Follows the ICC cycle with a lag of roughly 2 to 4 years.
Laws, rulings, and other actions
- Other actionNotice of Intent to adopt 2023 NEC and 2024 I-Codes
Proposes repealing current LAC 17:I.101-117 language and adopting the 2023 NEC and 2024 I-codes effective Jan 1, 2027.
- UndatedLegislationSB 228, Act 1202025 regular session
Transfers the powers and duties of the Louisiana State Uniform Construction Code Council to the State Licensing Board for Contractors.
Enacted 2025
luccc.louisiana.gov (opens in a new tab) - UndatedLegislationHB 1186, Act 8812026 regular session
Creates the Louisiana Uniform Construction Code Commission within the Office of the Governor and updates its statutes, including adopting only the latest editions of listed codes.
Enacted 2026
luccc.louisiana.gov (opens in a new tab) - UndatedLegislationSB 44, Act 122005 regular session
Created the State Uniform Construction Code and its council/commission; initial code effective Jan 1, 2007.
Enacted 2005
luccc.louisiana.gov (opens in a new tab) - UndatedExecutive orderJBE 17-14 (halted code adoptions until July 1, 2018; since rescinded)
Per the State Fire Marshal, halted code adoptions until July 1, 2018, then was rescinded and the 2015 I-codes were adopted.
How it was checked
Partial
Researched in the state’s own record. The seal stays broken until 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 three 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.
“2021 ICC Codes January 1, 2023”
“On 07/01/2023, the International Energy Conservation Code (IECC) became effective”
Louisiana Construction Codes (code information sheet)Louisiana Uniform Construction Code Commissionluccc.louisiana.gov (opens in a new tab)Agency pageRetrieved La. Admin. Code tit. 17, SS I-117 International Energy Conservation CodeLegal Information Institute, Cornell Law School (mirror of LAC)law.cornell.edu (opens in a new tab)Administrative code, secondaryRetrieved
Tracker cross-checks
Code adoption trackers are a cross-check. They are not Louisiana’s own record.
Louisiana state code statusCross-checkU.S. Department of Energyenergycodes.gov (opens in a new tab)Tracker, secondaryRetrieved
DOE’s energycodes.govCross-checkAgrees with the record
Commercial: Current State Code 2021 IECC and ASHRAE 90.1-2010; State Amendments Yes; Equivalent Code 90.1-2016; Effective Date 07/01/2023; Mandatory Statewide
Related pages
- See Louisiana’s IECC commercial on the map
- IECC commercial adoption in every state
- All six codes in Louisiana