This bill introduces a new section to RSA 674, establishing maximum lot sizes for single-family residential uses based on the type of infrastructure servicing the lot. Specifically, for lots not serviced by municipal or community sewer infrastructure, the maximum lot size is set at 88,000 square feet. For lots serviced by municipal or community water infrastructure, the maximum lot size is 44,000 square feet, provided there is adequate water system capacity. In cases where lots are serviced by municipal or community sewer infrastructure, the maximum lot size is reduced to 22,000 square feet, contingent upon adequate sewage system capacity. The bill also clarifies that these requirements do not limit the development potential of lots created before July 1, 2024, nor do they override existing municipal zoning regulations or environmental service regulations that may necessitate larger lot sizes.

The bill aims to streamline zoning procedures for residential housing and is set to take effect on July 1, 2026. It is expected to have an indeterminable fiscal impact on local expenditures as municipalities will need to amend local zoning ordinances, assess infrastructure capacity, and gather evidence to support any challenges to the established lot size requirements. The New Hampshire Municipal Association has indicated that these changes may lead to additional costs for municipalities as they navigate the new regulations.