Codes of Record

International Energy Conservation Code, residential

Michigan enforces the 2015 IECC residential

The 2015 International Energy Conservation Code (IECC) for residential buildings has been in force in Michigan since Feb 8, 2016. It applies statewide. Adopted by Department of Licensing and Regulatory Affairs (LARA), Bureau of Construction Codes. The legal citation is Mich. Admin. Code, Construction Code Parts 5 and 10.

Record of adoption

Edition in force

2015 IECC

Michigan Residential Code energy provisions (Part 10 Michigan Uniform Energy Code)

Verified

In force since
Legal citation
Mich. Admin. Code, Construction Code Parts 5 and 10
Adopted by
Department of Licensing and Regulatory Affairs (LARA), Bureau of Construction Codes
Second reading
Applies
Statewide
Also called
2015 Michigan Energy Code

Effective date is the 2015 Michigan Residential Code date from the Code Books page, matching DOE; the 2021 residential energy rules (2021-48 LR) are on hold under the Court of Claims order.

Coming next

  • 2021 IECCPartial
    Adopted; start date not setAdopted, not yet in forceMich. Admin. Code, Construction Code Part 10

    Scheduled for Aug 29, 2025; not implemented under the Jul 7, 2025, stipulated order. The filing date is from the final-rule notice.

How Michigan adopts the IECC residential

  • Agency rule
  • The legislature reviews the rules and can block them
  • The legislature sets the update schedule

LARA adopts energy rules like other construction code parts, with JCAR review and filing. The 2021 residential energy update was filed but is stayed by a stipulated order in a builders’ lawsuit.

Cycle. Statute calls for updates every 3 to 6 years for the residential code; Michigan is on 2015.

Laws, rulings, and other actions

  1. Court ruling
    Home Builders Assoc. et al. v LARA et al. (Michigan Court of Claims, stipulated order)

    Temporarily bars LARA from implementing the 2021-based Part 5 Residential Code and Part 10 energy rules while litigation continues, so the 2015 versions stay in force.

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 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.

  • “NOTE: Residential requirements are contained in the Michigan Residential Code.”

    Code BooksMichigan LARA, Bureau of Construction Codesmichigan.gov (opens in a new tab)Agency pageRetrieved

  • “the 2015 versions of the IRC and residential provisions of the IECC”

    Notice on the Court of Claims order, Residential Part 5 and Energy Part 10Michigan LARA, Bureau of Construction Codesmichigan.gov (opens in a new tab)Agency pageRetrieved

  • “2015 Michigan Residential Code Current Code – Effective February 8, 2016”

    Code BooksMichigan LARA, Bureau of Construction Codesmichigan.gov (opens in a new tab)Agency pageRetrieved

  • About a coming change

    “On July 7, 2025, an order was issued by the court in two cases before the Michigan Court of Claims”

    Notice on the Court of Claims order, Residential Part 5 and Energy Part 10Michigan LARA, Bureau of Construction Codesmichigan.gov (opens in a new tab)Agency pageRetrieved

Tracker cross-checks

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

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

    Residential: 2015 IECC; Effective Date 02/08/2016

    energycodes.gov (opens in a new tab)Read

  • BCAP’s code status pageCross-checkDoes not agree with the record

    Residential: 2021 Michigan Residential Code, based on the 2021 IECC, effective 3/1/2024

    bcapcodes.org (opens in a new tab)Read

Related pages

Other codes in Michigan