Bill > HB459

This bill, effective July 1, 2025, aims to limit the minimum lot sizes required by zoning ordinances for single-family homes, particularly in relation to sewer infrastructure. For areas not connected to municipal or community sewer systems, zoning ordinances cannot mandate lot sizes larger than what the Department of Environmental Services (DES) deems necessary for individual sewage disposal systems, unless a municipality can prove with evidence that larger lots are essential for community health and safety. For areas with municipal or community sewer systems, lot sizes for single-family homes will be capped at 22,000 square feet, provided the sewer system has sufficient capacity, again with the exception if a municipality can demonstrate a health or safety need for larger lots. These regulations do not apply to lots created before July 1, 2025, and do not override other zoning rules unrelated to minimum lot sizes.

Housing and Urban Affairs

https://gc.nh.gov/bill_Status/billinfo.aspx?id=893&inflect=2