; (2) limit the availability of federally subsidized flood insurance for construction of new homes, business, and infrastructure; (3) coordinate with floodplain managers, city planners, administrators, and local elected officials to ensure that structures built in flood-prone areas comply with building and elevation codes and regulations that are designed to reduce their risk of damage from flooding; and (4) prioritize increased mitigation funding through new and existing programs to help communities better prepare for future flood disasters before they happen. 4. Elimination of subsidies for new construction Subsection (c) of section 1308 of the National Flood Insurance Act of 1968 ( 42 U.S.C. 4015(c) ) is amended by adding at the end the following new paragraph: (3) New construction Any property the construction or substantial improvement of which the Administrator determines has been started on or after January 1, 2025, and the appropriate actuarial rate shall be adjusted with any changes to the flood zone or base flood elevation reflected in relevant flood insurance rate map, regardless of the previous rating; in determining whether a property is subject to this paragraph, the Administrator shall consider the issue date for any relevant building permit or occupancy certificate issued by the community in which such property is located; for purposes of this paragraph only, a determination regarding substantial improvement may exclude the costs of any improvement to a structure or the structure’s associated land area for which the primary purpose is flood mitigation or floodproofing