This bill authorizes the Department of Housing and Urban Development to provide capital assistance to owners and operators of federally-supported multifamily housing developments that are in poor condition or at financial risk. The assistance takes the form of direct loans at one percent interest, which may be forgiven in whole or in part, to pay for necessary physical improvements and repairs to these properties. Recipients must agree to maintain affordable housing for at least 30 years and contribute at least 20 percent of improvement costs from non-federal sources, though this requirement can be waived for applicants unable to secure matching funds. The bill affects owners, sponsors, and HUD-approved purchasers of apartment buildings with five or more units that receive federal housing assistance through various HUD programs. The legislation does not specify a dollar amount but authorizes "such sums as may be necessary" through future appropriations acts, with no set timeline for implementation or program duration specified.