PLAINFIELD, NEW HAMPSHIRE · SULLIVAN COUNTY

BUILD AN ADU IN PLAINFIELD.

✓ Allowed by-right · RSA 674:71-73

New Hampshire's HB 577 lets you add one accessory dwelling unit on your single-family lot in Plainfield — by-right. A detached ADU can be up to 950 sf, and ADU setbacks match your lot's single-family setbacks.

Plainfield setback reference

ADU setbacks in Plainfield follow your lot's single-family setbacks for its zoning district. Scan your address in the visualizer and we'll pull your exact parcel and confirm Plainfield's front, side, and rear requirements — or just ask us.

Note: Plainfield is beyond ~1 hour from our Madbury home base, so a travel-time allowance may be added — we'll spell it out in your quote.

Confirm your zoning

Plainfield zoning ordinance ↗NH GRANIT GIS (parcels & zoning) ↗

📍 SEE AN ADU ON YOUR PLAINFIELD LOT →GET A QUOTE

Plainfield ADU FAQ

Can I build an ADU in Plainfield, NH?

Yes. Under NH RSA 674:71-73 (HB 577), one accessory dwelling unit is allowed by-right on single-family lots statewide, including Plainfield (Sullivan County). A detached ADU can be up to 950 sf.

What are the ADU setbacks in Plainfield?

ADU setbacks in Plainfield match your lot's single-family setbacks for its zoning district. We pull your exact parcel and confirm Plainfield's requirements before locking your price.