Build an ADU in Bradford.
New Hampshire's HB 577 lets you add one accessory dwelling unit on your single-family lot in Bradford — 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 Bradford zoning ordinance · source · 2026-07-07
- Front
- 50 ft
- Side
- 30 ft
- Rear
- 30 ft
- Max coverage
- —
- Min lot
- 87,120 sf (~2.00 ac)
Principal single-family district: all land not in the Residential Business or Conservation districts, ~71.5% of town (Section 2.C; Art IV.B.3). Setbacks are town-wide (Art III.D): FRONT 50 ft measured from the EDGE of the public right-of-way (not centerline); by special…
- Front
- 50 ft
- Side
- 30 ft
- Rear
- 30 ft
- Max coverage
- —
- Min lot
- 87,120 sf (~2.00 ac)
Mixed residential/business corridor district: land (except wetlands and public land) within 500 ft of the centerline of Main St, High St, Old Warner Rd, Jones Rd, Greenhouse Lane, parts of Rte 114, Rte 103 and Breezy Hill Rd; ~3.1% of town (Art IV.B.1).
- Front
- 50 ft
- Side
- 30 ft
- Rear
- 30 ft
- Max coverage
- —
- Min lot
- 217,800 sf (~5.00 ac)
All land above 1,200 ft elevation; ~25.4% of town (Art IV.B.2). Same town-wide setbacks (Art III.D): front 50 ft from edge of ROW, 30 ft from abutters' lines (side and rear), 75 ft shoreline, 35 ft max height.
Form-based and downtown districts may use build-to lines instead of fixed setbacks (shown as “—”); verify your parcel's district before you build.
Bradford 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 Bradford (Merrimack County). A detached ADU can be up to 950 sf.
In Bradford's RR zone, ADUs follow the single-family setbacks: 50 ft front, 30 ft side, and 30 ft rear. Bradford has 3 zoning districts in total — see the full table below. Confirm your exact zone with the town.