Skip to main content

NH · County

Grafton County, NH.

Population: ~92,000. Upper Valley region along Home to Dartmouth College Heavy snow loads

Coverage in progress
Adopted edition

Coverage in progress

Inherits from NH state floor.

Design wind speed

95 mph

ASCE 7 Risk Cat II, 3-second gust at 33 ft. Drives fastener spacing, hold-downs, and opening protection.

Climate zone (IECC)

6A

Drives R-value, fenestration U-factor, and air-leakage envelope rules.

Special zones
  • HVHZ
  • WBDR
  • WUI
  • FEMA SFHA possible
Permit office

Grafton County County Building Department

Local conditions
  • County seat: Woodsville (Haverhill)

Working in Grafton County?

Pull an address-level code packet for any property in Grafton County. SkyCanvass resolves the parcel, looks up the adopted edition + the Grafton County-specific amendments listed above, and emits a cited packet ready for permit submittal.

See the New Hampshire state overview for the broader context, or browse the state directory.

Pull a Grafton County code packet.

Free to start — property lookups, state code access, the hail map, and your first storm report on us. No credit card required to look up an address.