The "End Veteran Homelessness Act of 2025" aims to enhance the HUD-VASH program, which provides supported housing for veterans. It amends title 38 of the United States Code to clarify that case managers are assigned to veterans determined to require case management, with a specific prioritization for vulnerable homeless veterans , including those with chronic mental illness, substance abuse disorders, or physical disabilities. This ensures that the most at-risk veterans receive focused support. The bill significantly modifies the HUD-VASH program under the United States Housing Act of 1937. It specifies that rental assistance can be provided to veterans who are homeless, at risk of homelessness, or for whom a HUD-VASH voucher is more appropriate than other housing assistance. Crucially, it mandates that if a veteran refuses case management, the Department of Veterans Affairs must make recurring engagement attempts, but rental assistance cannot be revoked by HUD, public housing authorities, or property owners solely due to this refusal or a suspension of case management for health and safety reasons. Furthermore, the legislation allows HUD-VASH vouchers to be used for homeless veterans or those at risk of homelessness who do not require case management, expanding the program's flexibility. It also authorizes appropriations for administrative fees to public housing agencies to cover costs like security deposit assistance and owner retention. Finally, the bill requires the Government Accountability Office (GAO) to submit a comprehensive report within one year, assessing various aspects of the HUD-VASH program, including veteran demographics, case manager details, service quality, and housing stability metrics.