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 limit 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 affect the potential for development of lots created before July 1, 2024, nor do they override existing municipal zoning regulations or environmental service regulations.

The bill aims to streamline zoning procedures for residential housing by ensuring that municipalities cannot impose lot size requirements greater than the specified limits unless they can provide empirical evidence of inadequate infrastructure capacity. The effective date for this act is set for July 1, 2026. The New Hampshire Municipal Association has indicated that municipalities may face indeterminable costs associated with amending local zoning ordinances and assessing infrastructure capacity, which could lead to increased local expenditures.