New Hampshire HB 1079 (2026), in force August 31, 2026: what it allows on a lot
HB 1079 (2026), in force August 31, 2026 is New Hampshire law, and the official source is at gc.nh.gov.
Towns must allow an accessory dwelling built within or attached to an existing nonconforming structure such as a detached garage, whatever the setback.
Whether it applies to one lot turns on where the lot is and what it is zoned; the city, county or state office named in the law decides. Mapped areas are approximate. This is a plain reading of public law with its source, not legal advice.
Free, no account. ParcelSheet shows the lot's mapped size, parcel lines and flood zone, and this law on the lot's New Hampshire sheet.
Other New Hampshire laws on a lot: Accessory dwellings (RSA 674:71), Septic approval.