This bill amends existing zoning laws to permit high-density residential development on land that is currently zoned for commercial use. Specifically, it introduces a new subdivision to RSA 674, which includes definitions for "high density residential zone," "commercially zoned land," and "mixed-use development." A high-density residential zone is defined as an area that allows for at least 20 residential units per acre, while commercially zoned land refers to areas designated for retail, office, and service industries.

Furthermore, the bill mandates that municipalities must allow high-density residential development on commercially zoned land, provided that the necessary infrastructure—such as roads, water, and sewage systems—is available or can be provided to support the new development. This change aims to promote urban development that integrates residential living with commercial activities, thereby enhancing community growth and sustainability. The act will take effect 60 days after its passage.