Jurisdictions

There is no national fire code. Each state, and often each city, adopts a specific edition of a model code, usually the International Fire Code or NFPA 1, then amends it locally. The final word belongs to the authority having jurisdiction, the AHJ: the fire marshal or fire prevention bureau that accepts your reports, fails your inspections, and signs off on your work. Two towns twenty minutes apart can be enforcing editions published a decade apart.

Why editions drift apart

The ICC publishes a new International Fire Code every three years: 2018, 2021, 2024. NFPA revises NFPA 25 and NFPA 72 on the same rhythm. Adoption does not keep up. A state can adopt the 2018 edition in 2021, amend a dozen sections, and keep it in force while the city across the line moves to 2024. Which edition governs an inspection depends on where the building sits, not on what was published last.

What changes at the city line

Crossing a city line can change the reporting portal, the impairment notification window, and the license required to test the same system you tested yesterday. Treat every new jurisdiction as unknown until you have read its adopting ordinance and asked its fire prevention bureau how it wants ITM reports filed. Terms like AHJ and ITM are defined in the glossary.

What these pages are held to

Every state and AHJ page in this section cites its source: the adopting statute, the ordinance, or an official AHJ document, with the date we checked it. Nothing is asserted from memory or repeated from another blog. Each page is re-verified at least every 180 days, and the verification date is printed on the page.

Codes and local amendments change between our checks. The AHJ's current written requirements control. Plaw is not a law firm and none of this is legal advice. When a call is close, ask the AHJ in writing.