The main purpose of this legislation, known as the "Build More Housing Near Transit Act of 2025," is to encourage the development of affordable housing in areas close to public transit. The bill aims to make it easier for states and local governments to create housing options that are accessible and affordable, addressing the growing need for housing in urban areas. Key provisions of the bill include the introduction of "pro-housing policies," which are defined as actions taken by state or local governments to remove barriers to building or preserving housing.