Connecticut — Code Adoption Summary
Adoption model: Statewide-mandatory (Office of the State Building Inspector). A newer 2026-cycle code is drafted but delayed pending legislative review — do not assume it's live yet. Last verified: 2026-07-03 Confidence: verified Primary sources: CT OSBI — https://portal.ct.gov/das/office-of-state-building-inspector · ICC CT
Statewide adopted codes — current (2026) — 2022 CT State Building Code
| Code family | Adopted edition | Notes | Source |
|---|---|---|---|
| Building | 2022 CT SBC (2021 IBC/IRC base) | applies to applications made after 2022-10-01 | portal.ct.gov |
| Residential / Existing / Mechanical / Plumbing / Pool-Spa | 2021 IRC/IEBC/IMC/IPC/ISPSC + CT amendments | " | |
| Energy | 2021 IECC + CT amendments | " | |
| Electrical (NEC) | NEC 2020 + CT amendments | " | |
| Accessibility | ICC A117.1-2017 | " |
Pipeline: the next CT code cycle (2024 ICC-family models) was expected effective 2026-07-01, but is awaiting Legislative Regulation Review Committee approval and may be delayed — confirm current status before assuming the new cycle is live.
Adoption model & precedence
- The state code is mandatory statewide; local building officials enforce it, with CT amendments layered on the base I-Codes.
- AHJ = local building official.
Major cities / counties
| Jurisdiction | Notes | Building dept. |
|---|---|---|
| Bridgeport / New Haven / Hartford / Stamford | statewide code (no significant home-rule carve-outs identified) | respective building depts |
AHJ fallback (when local adoption is unverified)
- State baseline (certain, as of 2026-07): 2022 CT SBC (2021 IBC/IRC), NEC 2020, IECC 2021.
- Action: confirm whether the delayed 2026-cycle code (2024 ICC family) has taken effect yet — status was pending legislative approval as of this writing.
Change log
- 2026-07-03 — created; verified 2022 CT SBC (2021 IBC, NEC 2020, IECC 2021); flagged next-cycle (2024 ICC family) delay pending legislative review.