The TIMEOUT Act would require the federal government to relocate all non-essential administrative office space from "sanctuary jurisdictions" within 90 days of the law's enactment. The bill defines sanctuary jurisdictions as states or cities that have laws or policies limiting cooperation with federal immigration enforcement, such as restricting the sharing of immigration status information or complying with Department of Homeland Security detainer requests. Federal agencies, with the exception of the Department of Homeland Security, would be prohibited from establishing, leasing, or renewing any office space in these jurisdictions and cannot use federal funds for such purposes. Within 30 days, the General Services Administration would be required to identify all affected federal office space and notify relevant agencies, with relocation plans due within 60 days. The General Services Administration would report to Congress within one year on relocation status, affected facilities, and estimated costs or savings associated with the moves.