Build an ADU in Nottingham.
New Hampshire's HB 577 lets you add one accessory dwelling unit on your single-family lot in Nottingham — by-right. A detached ADU can be up to 950 sf, and ADU setbacks match your lot's single-family setbacks.
3 districts
Each district's single-family setbacks — which your ADU follows. The primary residential district is highlighted.
Verified against the official Nottingham zoning ordinance · source · 2026-07-06
- Front
- 50 ft
- Side
- 50 ft
- Rear
- 50 ft
- Max coverage
- —
- Min lot
- 87,120 sf (~2.00 ac)
2-acre min lot; 200' frontage. Each lot must contain a 30,000 sf contiguous upland-soil 'fit for building' envelope.
- Front
- 50 ft
- Side
- 50 ft
- Rear
- 50 ft
- Max coverage
- 40% lot
- Min lot
- 87,120 sf (~2.00 ac)
Rte 152/156 corridor, 500' deep. Lot sizes per Art II Sec C (2-acre min); 200' frontage.
- Front
- 150 ft
- Side
- 100 ft
- Rear
- 100 ft
- Max coverage
- 50% lot
- Min lot
- 87,120 sf (~2.00 ac)
Route 4 corridor, 1000' deep, lots fronting Rte 4 only. Setbacks tiered by use: Commercial = 100' from all boundaries; Industrial = 150' front line / 100' all other boundaries (industrial recorded here).
Form-based and downtown districts may use build-to lines instead of fixed setbacks (shown as “—”); verify your parcel's district before you build.
Nottingham ADU FAQ
Yes. Under NH RSA 674:71-73 (HB 577), one accessory dwelling unit is allowed by-right on single-family lots statewide, including Nottingham (Rockingham County). A detached ADU can be up to 950 sf.
In Nottingham's R-A zone, ADUs follow the single-family setbacks: 50 ft front, 50 ft side, and 50 ft rear. Nottingham has 3 zoning districts in total — see the full table below. Confirm your exact zone with the town.