Codes of Record

International Energy Conservation Code, residential

Louisiana enforces the 2021 IECC residential

The 2021 International Energy Conservation Code (IECC) for residential 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

State sources give one IECC edition (2021) without separate residential and commercial editions; DOE lists residential as 2018 IECC. The Register text of the residential energy chapter also mentions the 2009 IECC, so the residential basis needs confirmation from the commission.

Exceptions

  • All parishes are assigned to Climate Zone 2A for IECC compliance

Coming next

  • 2024 IECCPartial
    Planned 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 residential

  • Agency rule
  • The legislature reviews the rules and can block them
  • The legislature sets the update schedule
  • A recent law changed the process

Commission rulemaking amending LAC 17:I.117, same as other LSUCC codes; the energy code took effect Jul 1, 2023, six months after the other I-codes.

Cycle. Follows the ICC cycle with a lag of roughly 2 to 4 years.

Laws, rulings, and other actions

  1. Other action
    Notice 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.

  2. UndatedLegislation
    SB 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)
  3. UndatedLegislation
    HB 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)
  4. UndatedLegislation
    SB 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)
  5. UndatedExecutive order
    JBE 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 four source pages.

Evidence 3 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

  • About a coming change

    Louisiana Register, August 2026: Notice of Intent, Uniform Construction Code Adoption of the 2023 NEC and the 2024 I-Codes (LAC 17:I.Chapter 1)Office of the Governor, Uniform Construction Code Commission (hosted by LUCCC)luccc.louisiana.gov (opens in a new tab)State registerRetrieved

Tracker cross-checks

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

  • DOE’s energycodes.govCross-checkDoes not agree with the record

    Residential: Current State Code 2018 IECC; State Amendments Yes; Effective Date 07/01/2023; Mandatory Statewide

    energycodes.gov (opens in a new tab)Read

Related pages

Other codes in Louisiana