This bill authorizes municipalities in New Hampshire to adopt zoning ordinances or master plan provisions specifically aimed at the protection, management, or replacement of tree canopy. The legislation recognizes the critical benefits provided by tree canopies, such as air and water filtration, stormwater management, and enhancement of property values and community health. It addresses concerns raised by municipalities regarding tree canopy loss and provides them with the authority to include preservation measures in their local land use planning.

The new legal language introduced in the bill includes the addition of a section (674:16-b) to RSA 674, which allows municipalities to create ordinances that may cover the retention of existing trees during development, requirements for replacement or planting when canopy is removed, and long-term management goals for tree canopy as part of the municipal master plan. Importantly, the bill clarifies that municipalities are not mandated to adopt these provisions, ensuring local discretion in the matter. The act is set to take effect 60 days after its passage.