International Energy Conservation Code, commercial
Connecticut enforces the 2021 IECC commercial
The 2021 International Energy Conservation Code (IECC) for commercial buildings has been in force in Connecticut since Oct 1, 2022. It applies statewide. Adopted by State Building Inspector and Codes and Standards Committee, DAS. The legal citation is Conn. Gen. Stat. 29-252 and 29-252b; 2022 CSBC.
Record of adoption
Edition in force
2021 IECC
2022 Connecticut State Building Code
Verified
- In force since
- Legal citation
- Conn. Gen. Stat. 29-252 and 29-252b; 2022 CSBC
- Adopted by
- State Building Inspector and Codes and Standards Committee, DAS
- Second reading
- Applies
- Statewide
- Also called
- CSBC
DOE adds ASHRAE 90.1-2019 as the commercial equivalent.
Coming next
- 2024 IECCPartialNo date yetProposedConn. Gen. Stat. 29-252b
2024 IECC anticipated; approval pending; effective date delayed from Jul 1, 2026.
How Connecticut adopts the IECC commercial
Same as the State Building Code generally.
Cycle. Roughly triennial.
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 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.
“2022 State Building Code - Effective 10/1/2022 (currently in effect)”
History of the Connecticut State Building CodeConnecticut Department of Administrative Servicesportal.ct.gov (opens in a new tab)Agency pageRetrieved Connecticut State Building Code (regulations page)Connecticut Department of Administrative Servicesportal.ct.gov (opens in a new tab)Agency pageRetrieved About another code
“It applies to projects with permit applications filed from October 1, 2022.”
Safety Codes and InspectionsConnecticut Department of Administrative Servicesportal.ct.gov (opens in a new tab)Agency pageRetrieved
Tracker cross-checks
Code adoption trackers are a cross-check. They are not Connecticut’s own record.
About a tracker cross-check
Connecticut adoptions map pageCross-checkInternational Code Counciliccsafe.org (opens in a new tab)Tracker, secondaryRetrieved
DOE’s energycodes.govCross-checkAgrees with the record
Commercial: 2021 IECC and ASHRAE 90.1-2019; effective 10/01/2022
Related pages
- See Connecticut’s IECC commercial on the map
- IECC commercial adoption in every state
- All six codes in Connecticut