International Energy Conservation Code, commercial
New Jersey uses another model code in place of the IECC commercial
New Jersey uses another model code in place of the IECC commercial. Its code is the Energy Subcode (ASHRAE 90.1-2022 for commercial). It has been in force since Aug 17, 2026. Adopted by NJ Department of Community Affairs (Commissioner), with Code Advisory Board. The legal citation is N.J.A.C. 5:23-3.18.
Record of adoption
Edition in force
Another model code
Energy Subcode (ASHRAE 90.1-2022 for commercial)
Partial
- In force since
- Legal citation
- N.J.A.C. 5:23-3.18
- Adopted by
- NJ Department of Community Affairs (Commissioner), with Code Advisory Board
- Second reading
- Applies
- Based on another model code
- Also called
- N.J.A.C. 5:23-3.18
DCA’s Current Construction Codes table names ASHRAE 90.1-2022 for commercial, with IECC/2024 for low-rise residential; DOE says 2024 IECC and ASHRAE 90.1-2022. The 2025 Register proposal text said it would maintain ASHRAE 90.1-2019.
How New Jersey adopts the IECC commercial
The Commissioner amends the Energy Subcode (N.J.A.C. 5:23-3.18) by rule after Code Advisory Board review; the proposal cites the federal requirement to certify within two years of a DOE determination that commercial provisions meet ASHRAE 90.1. No legislative approval step was found.
Cycle. Roughly every three to four years; commercial timing is influenced by DOE determinations under federal law
Laws, rulings, and other actions
- LegislationP.L. 1996, c.53 (Assembly Committee Substitute for A1708 and A1782)
Amended the Uniform Construction Code Act (N.J.S.A. 52:27D-123) so subcodes may be adopted individually and adoption of new model-code publications cannot occur more often than once every three years except in imminent peril.
Enacted Jun 28, 1996, effective first day of third month after enactment
pub.njleg.gov (opens in a new tab)
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 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.
“Effective Date: August 17, 2026.”
N.J.A.C. 5:23-3.14, 3.15, 3.16 (adoption notice, model codes 2024)NJ Department of Community Affairsnj.gov (opens in a new tab)State registerRetrieved “5:23-3.18”
“Aug 17, 2026”
Current Construction CodesNJ Department of Community Affairsnj.gov (opens in a new tab)Agency pageRetrieved About the note
“maintain the current edition of ASHRAE Standard 90.1-2019 as the design standard”
2024 model codes rule proposal (N.J.A.C. 5:23-3.14 through 3.22)NJ Department of Community Affairsnj.gov (opens in a new tab)State registerRetrieved
Tracker cross-checks
Code adoption trackers are a cross-check. They are not New Jersey’s own record.
DOE’s energycodes.govCross-checkAgrees with the record
Current State Code: 2024 IECC and ASHRAE 90.1-2022; State Amendments: Yes; Effective Date: 08/17/2026; Enforcement: Mandatory Statewide
ICC’s code adoption mapCross-checkDoes not agree with the record
Adoption chart (April 2026 copy): energy cell reads 90.1-2019
BCAP’s code status pageCross-checkDoes not agree with the record
Commercial based on 2021 IECC and ASHRAE 90.1-2019, effective 7/1/2024 (page metadata Apr 7, 2025)
Related pages
- See New Jersey’s IECC commercial on the map
- IECC commercial adoption in every state
- All six codes in New Jersey