HB 415 directs the Texas Department of Housing and Community Affairs (TDHCA) to conduct a study on mold contamination in housing developments that receive financial assistance from the department. The study will examine the frequency and causes of mold contamination and must be completed using existing resources. TDHCA is required to submit a report to the legislature by September 1, 2026, summarizing the study’s findings and providing recommendations for preventing and remediating mold contamination in financially supported housing. The act will take effect on September 1, 2025, and will expire on September 1, 2027.