RSA 674:39 Seven-Year Exemption.

I. Every subdivision plat approved by the planning board and properly recorded in the registry of deeds and every site plan approved by the planning board and properly recorded in the registry of deeds, if recording of site plans is required by the planning board or by local regulation, shall be exempt from all subsequent changes in subdivision regulations, site plan review regulations, impact fee ordinances, and zoning ordinances adopted by any city, town, or county in which there are located unincorporated towns or unorganized places, except those regulations and ordinances which expressly protect public health standards, such as water quality and sewage treatment requirements, for a period of 7 years after the date of approval; provided that:
(a) Active and substantial deve