Regulatory framework
The code baseline for Hillsborough County.
New Hampshire state baseline under RSA 155-A: 2021 IBC, IEBC, IPC, IMC, ISPSC, and IRC; 2018 IECC; 2023 NEC; and state-approved amendments. Municipalities administer local enforcement and any confirmed local amendments.
Inspection lane
Contact the city or town building official for the property location. Local enforcement agencies perform plan review, permitting, inspections, and occupancy functions under RSA 155-A; the state fire marshal may act where a municipality has no local mechanism and makes a written request.