Build an ADU in Goshen.
New Hampshire's HB 577 lets you add one accessory dwelling unit on your single-family lot in Goshen — by-right. A detached ADU can be up to 950 sf, and ADU setbacks match your lot's single-family setbacks.
4 districts
Each district's single-family setbacks — which your ADU follows. The primary residential district is highlighted.
Verified against the official Goshen zoning ordinance · source · 2026-07-07
- Front
- 50 ft
- Side
- 40 ft
- Rear
- 40 ft
- Max coverage
- —
- Min lot
- 130,680 sf (~3.00 ac)
Principal district: 'a district of Residential or Agricultural use only. Min lot = 3 acres = 130,680 sf (Sec III.C: 'Lots shall be at least three (3) acres in size'; a single 2-acre lot may be created within a subdivision, but 3 acres is the general minimum).
- Front
- 50 ft
- Side
- 40 ft
- Rear
- 40 ft
- Max coverage
- —
- Min lot
- 130,680 sf (~3.00 ac)
Overlay-style district along both sides of Brook Road (defined by tax map parcels as of 3-8-1988), extending 500' back or to the property line, whichever is less (Sec III.A.2). Because the ordinance has no separate area/yard table for this district, the town-wide dimensional…
- Front
- 50 ft
- Side
- 40 ft
- Rear
- 40 ft
- Max coverage
- —
- Min lot
- 130,680 sf (~3.00 ac)
District along Route 10 from the Newport town line to the Lempster town line, extending 500' back from the road or to the existing property line (as of the 3-11-2014 amendment), whichever is less (Sec III.A.3).
- Front
- 50 ft
- Side
- 40 ft
- Rear
- 40 ft
- Max coverage
- —
- Min lot
- 130,680 sf (~3.00 ac)
Special-purpose district covering the Mount Sunapee Resort leasehold area (State-owned Tax Map 411 Parcel 011 and Tax Map 412 Parcel 032, plus parcels that attach on approval of a Five-Year Master Development Plan) (Sec III.A.4.a).
Form-based and downtown districts may use build-to lines instead of fixed setbacks (shown as “—”); verify your parcel's district before you build.
Goshen 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 Goshen (Sullivan County). A detached ADU can be up to 950 sf.
In Goshen's Residential-Agricultural zone, ADUs follow the single-family setbacks: 50 ft front, 40 ft side, and 40 ft rear. Goshen has 4 zoning districts in total — see the full table below. Confirm your exact zone with the town.