NFPA 72 code sections · Regulatory Compliance & Inspections
The AHJ: who it is, and why there is often more than one
NFPA 72 defines the authority having jurisdiction as the organization, office or individual responsible for enforcing the requirements of the code and for approving equipment, materials, installations and procedures. The annex explains that the AHJ may be a fire marshal, building official, health department, insurance company representative, federal agency, or even the property owner in some cases — and several can apply to one building. The AHJ interprets, approves alternatives and equivalencies, and can ask for evidence of qualifications. A compliance strategy begins by identifying every AHJ before the design is drawn.
NFPA 72 reference
Chapter 3 — Definitions
3.2.2 Authority Having Jurisdiction (AHJ) and A.3.2.2 (fire marshal, building official, insurer, federal/state agencies as AHJ); 3.2.1 Approved; 1.5 Equivalency
References use NFPA 72 2019/2022 numbering — section numbers can shift between editions, so confirm in the edition your AHJ has adopted.
On the job
A hospital addition is approved by the city fire marshal. The state health department's life-safety surveyor later cites the same system under its own adopted edition, and the insurer's highly-protected-risk engineer wants additional detection in the data center. Three AHJs, three sets of comments — and the designer who identified them at kickoff had already reconciled two of the three.
Quick check
1. The AHJ is:
2. Can a building have more than one AHJ?
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