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. Additionally, for lots serviced by municipal or community sewer infrastructure, the maximum lot size is 22,000 square feet, contingent upon sufficient 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 concerning residential housing while ensuring that municipalities can still enforce regulations related to environmental services. It is important to note that the bill does not require municipalities to exceed these maximum lot sizes unless they can provide empirical evidence demonstrating that their water or sewer systems cannot support additional homes. The act is set to take effect on July 1, 2026, and is expected to incur indeterminable costs for municipalities as they amend local zoning ordinances and assess infrastructure capacities.