Regulatory framework
The code baseline for Grafton 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 municipal building official for the project location. RSA 155-A requires an authorized local enforcement agency to review plans, issue permits, inspect work, and issue occupancy certificates; a state-fire-marshal fallback may apply on written municipal request.