HB 385 mandates the collection, publication, and maintenance of detailed information on affordable housing by municipalities eligible for federal Community Development Block Grants and other participating municipalities. It requires annual surveys to gather data on affordable housing units, including costs, eligibility criteria, waiting lists, and proximity to essential services. Municipalities must publish this information in a searchable database accessible via websites and mobile applications. The Texas Department of Housing and Community Affairs is tasked with adopting rules to administer the initiative, publishing statewide reports on affordable housing, and coordinating with governmental and private entities. The bill takes effect on September 1, 2025.