New Hampshire law on a lot: Accessory dwellings (RSA 674:71).
A New Hampshire lot sheet on ParcelSheet shows the FEMA flood zone, wetlands, wildfire hazard, faults, septic soil rating, slope and 3 ft sea level rise for any address, each with its public source, and points to the zoning office. Lot lines and parcel numbers come from the New Hampshire statewide parcel map. Free to start.
Updated
| Layer | Official source |
|---|---|
| Flood zone | FEMA National Flood Hazard Layer |
| Wetlands | US Fish and Wildlife Service, National Wetlands Inventory |
| Wildfire hazard | USDA Forest Service, Wildfire Hazard Potential |
| Faults | USGS Quaternary Fault and Fold Database |
| Soil for septic | USDA NRCS Soil Survey (SSURGO), septic absorption field rating |
| Slope and elevation | USGS 3DEP elevation |
| Sea level rise, 3 ft | NOAA Office for Coastal Management, sea level rise viewer |
County pages: Belknap County, Carroll County, Cheshire County, Coos County, Grafton County, Hillsborough County, Merrimack County, Rockingham County, Strafford County, Sullivan County, All New Hampshire counties.
New Hampshire laws on a lot: Accessory dwellings (RSA 674:71), Septic approval, HB 1079 (2026), in force August 31, 2026.
A New Hampshire lot sheet on ParcelSheet shows the FEMA flood zone, wetlands, wildfire hazard, faults, septic soil rating, slope and 3 ft sea level rise for any address, each with its public source, and points to the zoning office. Lot lines and parcel numbers come from the New Hampshire statewide parcel map. Free to start.
The city or county planning office where the lot sits decides what can be built on it. ParcelSheet points to that office and to the 3 New Hampshire state laws that limit what it may require, each with its source.
Yes. A lot sheet is free to start, with no account.
Every rule and hazard on the lot, sorted Flagged, Caution and Clear, each with its source and date.
Guides: How it works · All New Hampshire counties · All 50 states · Questions
Public records and maps with sources. Not legal advice, a survey, or a permit. Confirm with the town or county planning office. By using ParcelSheet you agree to the Terms of Use. Privacy.