N.H. Rev. Stat. § 672:3
"Abutter" means any person whose property is located in New Hampshire and adjoins or is directly across the street or stream from the land under consideration by the local land use board. "Directly across the street or stream" shall be determined by lines drawn perpendicular from all pairs of corner boundaries along the street or stream of the applicant to pairs of projected points on any property boundary across the street or stream that intersect these perpendicular lines. Any property that lies along the street or stream between each pair of projected points, or is withing 50 feet of any projected point shall be considered an abutter. For purposes of receiving testimony only, and not for purposes of notification, the term "abutter" shall include any person who is able to demonstrate that his land will be directly affected by the proposal under consideration. For purposes of receipt of notification by a municipality of a local land use board hearing, in the case of an abutting property being under a condominium or other collective form of ownership, the term abutter means the officers of the collective or association, as defined in RSA 356-B:3, XXIII. For purposes of receipt of notification by a municipality of a local land use board hearing, in the case of an abutting property being under a manufactured housing park form of ownership as defined in RSA 205-A:1, II, the term "abutter" includes the manufactured housing park owner and the tenants who own manufactured housing which adjoins or is directly across the street or stream from the land under consideration by the local land use board.
RSA 672:3
1983, 447:1. 1986, 33:2. 2002, 216 : 1 , eff. July 15, 2002.