Build an ADU in Weare.
New Hampshire's HB 577 lets you add one accessory dwelling unit on your single-family lot in Weare — by-right. A detached ADU can be up to 950 sf, and ADU setbacks match your lot's single-family setbacks.
7 districts
Each district's single-family setbacks — which your ADU follows. The primary residential district is highlighted.
Verified against the official Weare zoning ordinance · source · 2026-07-06
- Front
- 50 ft
- Side
- 25 ft
- Rear
- 25 ft
- Max coverage
- —
- Min lot
- 84,000 sf (~1.93 ac)
PRIMARY single-family residential district. Minimum lot size is soil/slope-based per Table 1-1 (Art 14.2): ranges 84,000 sf (best case, slope class AB 0-8% / soil class 1) up to 144,000 sf; minLotSqft=84,000 is the most-permissive cell.
- Front
- 50 ft
- Side
- 25 ft
- Rear
- 25 ft
- Max coverage
- —
- Min lot
- 217,800 sf (~5.00 ac)
Front 50 ft, sidelines 25 ft (Sec 18.2 governs both R and RA); no separate rear figure stated, recorded as 25 ft No lot-coverage cap stated. Minimum lot size 217,800 sf (5 acres) AND must also meet Table 1-1 soil/slope requirements (Sec 14.3.1).
- Front
- 25 ft
- Side
- 20 ft
- Rear
- 20 ft
- Max coverage
- —
- Min lot
- —
Six designated Village sub-areas (Riverdale, Weare Center, Clinton Grove, Chase Village, Tavern Village, North Weare). minLotSqft is null because the ordinance does not set a flat figure: minimum lot size = the NH state minimum (per NH Water Supply & Pollution Control…
- Front
- 50 ft
- Side
- 30 ft
- Rear
- 30 ft
- Max coverage
- 50% building
- Min lot
- 87,120 sf (~2.00 ac)
Front 50 ft (Sec 24.6.1); side and rear 30 ft (Sec 24.6.2). Minimum lot size for commercial use 2 acres = 87,120 sf (Sec 24.5.1); minimum frontage 200 ft (Sec 24.5.2). NOTE: for any use involving housing, the soil/slope Table 1-1 minimum lot size also applies (Sec 14.2).
- Front
- 50 ft
- Side
- 30 ft
- Rear
- 30 ft
- Max coverage
- —
- Min lot
- 87,120 sf (~2.00 ac)
Front 50 ft (Sec 25.6.1); side and rear 30 ft (Sec 25.6.2). Minimum lot size 2 acres = 87,120 sf (Sec 25.5.1); minimum frontage 200 ft (Sec 25.5.2). For any use involving housing, Table 1-1 soil/slope minimum lot size also applies (Sec 14.2).
- Front
- —
- Side
- —
- Rear
- —
- Max coverage
- —
- Min lot
- 10,000 sf (~0.23 ac)
District for Manufactured Housing Parks (Art 23). Each individual manufactured house sited on a minimum lot of 10,000 sf where centralized water and sewage are provided, plus an additional 5,000 sf per manufactured house for open space and central utilities (Sec 23.4.1).
- Front
- —
- Side
- —
- Rear
- —
- Max coverage
- —
- Min lot
- —
Conservation/overlay-style district covering jurisdictional wetlands (RSA 482-A); where superimposed over other zones the more restrictive regulation applies (Sec 28.5.4). Permitted uses are limited to low-intensity, non-altering uses (forestry, agriculture, wildlife refuge,…
Form-based and downtown districts may use build-to lines instead of fixed setbacks (shown as “—”); verify your parcel's district before you build.
Weare 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 Weare (Hillsborough County). A detached ADU can be up to 950 sf.
In Weare's R zone, ADUs follow the single-family setbacks: 50 ft front, 25 ft side, and 25 ft rear. Weare has 7 zoning districts in total — see the full table below. Confirm your exact zone with the town.