The bill amends Chapter 45-23 of the General Laws, specifically adding a new section, 45-23-37.1, which pertains to the subdivision of oversized lots for residential use. It allows applicants involved in land development projects to utilize the existing administrative subdivision process to request approval for subdividing lots that are larger than those typically found in the surrounding neighborhood. The criteria for subdivision will be based on the median dimensions of adjacent properties or the median dimensions of all parcels on a contiguous block, whichever is smaller. Additionally, applicants can use local tax assessor maps to determine these dimensions.

Furthermore, the bill mandates that each city or town must amend its local regulations to align with this new section by December 31, 2025. The act is set to take effect immediately upon passage, facilitating the subdivision of oversized lots to promote residential or mixed-use development in accordance with local zoning regulations.