N.H. Rev. Stat. Ann. § 675:5
I. Zoning regulations, restrictions and boundaries may from time to time be amended or repealed.
(b) The owners of 20 percent of the area within 100 feet immediately adjacent to the area affected by the change or across a street from such area.
I-b. Paragraph I-a shall apply only to amendments which alter the boundary locations separating previously defined zoning districts, or to amendments which alter the regulations or restrictions of an area not larger than 1/3 of the land area within the municipality.
I-c. The area of streets, commons, or land owned by a governmental entity shall not be included in any calculation under this section.
I-a. A favorable vote of 2/3 of all the members of the legislative body present and voting shall be required to act upon any amendment or repeal in the case of a protest against such zoning change signed by either:
II. In order to have any protest considered pursuant to paragraph I-a:
Source. 1983, 447:1. 1985, 103:24. 1989, 44:1-3, eff. June 11, 1989.