Gas code in Connecticut
The fuel gas code edition in force in Connecticut, with its effective date, the adopting authority and an official link. Factual adoption data only — confirm with your local AHJ.
NFPA 54 in force in Connecticut
NFPA 54
NFPA 54 (as referenced by the 2022 CT codes)
- Effective
- October 1, 2022
- Verified
- June 28, 2026
Adopting authority
Connecticut DAS Office of the State Building Inspector / Office of State Fire Marshal
Authority websiteConnecticut does NOT adopt the ICC IFGC. By state amendment, references to the International Fuel Gas Code are treated as references to NFPA 54 (National Fuel Gas Code), NFPA 2 and NFPA 58 as adopted in the 2022 CT State Fire Safety Code and Fire Prevention Code. Statewide and mandatory; the exact NFPA 54 edition year carries some uncertainty.
State/province adoption is the baseline. Your local building department may amend it or enforce a different edition — always confirm with the authority having jurisdiction (AHJ) before you design, bid or pull a permit.
Gas code in Connecticut: what applies on your job
Connecticut has adopted NFPA 54 (as referenced by the 2022 CT codes) (NFPA 54) with an effective date of October 1, 2022. The body responsible for adoption and enforcement is Connecticut DAS Office of the State Building Inspector / Office of State Fire Marshal. This is the jurisdiction-wide baseline — your local building department may amend it or enforce a different edition, so confirm with the authority having jurisdiction before you design, bid or pull a permit.
Connecticut does NOT adopt the ICC IFGC. By state amendment, references to the International Fuel Gas Code are treated as references to NFPA 54 (National Fuel Gas Code), NFPA 2 and NFPA 58 as adopted in the 2022 CT State Fire Safety Code and Fire Prevention Code. Statewide and mandatory; the exact NFPA 54 edition year carries some uncertainty. The official code text is published by the standards body and is free to read online — use the official link above to read it. We link and cite the code; we do not reproduce it.
Frequently asked questions
Which fuel gas code edition is in force in Connecticut?+
Connecticut has adopted NFPA 54 (as referenced by the 2022 CT codes) (NFPA 54), effective October 1, 2022. The adopting authority is Connecticut DAS Office of the State Building Inspector / Office of State Fire Marshal. Verified June 28, 2026.
Does Connecticut amend the base code?+
Connecticut does NOT adopt the ICC IFGC. By state amendment, references to the International Fuel Gas Code are treated as references to NFPA 54 (National Fuel Gas Code), NFPA 2 and NFPA 58 as adopted in the 2022 CT State Fire Safety Code and Fire Prevention Code. Statewide and mandatory; the exact NFPA 54 edition year carries some uncertainty.
What does "edition in force" mean?+
It is the specific edition of a model code (for example the 2023 NEC, the 2021 IBC, or CSA C22.1:24) that a state or province has legally adopted and currently enforces. Codes are republished on roughly three-year cycles, and each jurisdiction adopts a new edition on its own schedule — often with amendments — so the edition in force varies by place and by discipline.
Does the whole state or province use the same code?+
Not always. Many jurisdictions set a statewide or provincial baseline edition, but local building departments (the authority having jurisdiction, or AHJ) can amend it or enforce a different edition. Some states leave most adoption to local jurisdictions, and a few large cities such as Chicago and New York City run their own codes. Always confirm with your AHJ.
Which model codes does this directory track?+
In the United States: the NEC (NFPA 70) for electrical, the ICC I-Codes (IBC/IRC) for building, the UPC (IAPMO) or IPC (ICC) for plumbing, the IMC/UMC for mechanical, the IFGC/NFPA 54 for fuel gas, and the IFC/NFPA 1 for fire. In Canada: the Canadian Electrical Code (CSA C22.1), the National Building, Plumbing and Fire Codes of Canada and their provincial editions, and CSA B149.1 for gas.
How do I read the official code for free?+
NFPA offers free read-only online access to many of its standards including the NEC, and the ICC publishes its I-Codes through a free online reading room. Canadian codes are typically published by CSA Group or the National Research Council and may require purchase or membership. Each result links to the official source.
Why does this directory not show the actual code text?+
Trade codes are copyrighted by their standards bodies (NFPA, ICC, IAPMO, CSA). This directory publishes only factual adoption data — which edition is in force, when it took effect, who the authority is, whether it is amended, and where to read it officially — and links you to the official source for the code text itself.
Methodology & sources
This record was verified against Connecticut DAS Office of the State Building Inspector / Office of State Fire Marshal and the relevant standards body on June 28, 2026, and is next due for review by December 31, 2026. We publish factual adoption data only — never code text.
- Official state/provincial adoption authorities + NFPA, ICC, IAPMO and CSA standards bodies — verified June 28, 2026
- Connecticut DAS Office of the State Building Inspector / Office of State Fire Marshal — Confirmed against the 2022 CT State Building Code (CT DAS) and 2022 CT State Fire Safety Code, which state IFGC references are deemed references to NFPA 54, NFPA 2 and NFPA 58 as adopted in the 2022 CT Fire Safety and Fire Prevention Codes. Specific NFPA 54 edition year not independently confirmed. — verified June 28, 2026
Last reviewed June 28, 2026. Estimates are indicative — verify against current product specs and local requirements before ordering.
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