"Federally assisted rental housing relies on subsidies that help housing providers build, operate and maintain affordable homes, according to the report. These federal project-based subsidies support over 5 million homes, or 10% of the nation's rental housing stock.

The report highlights threats to this type of housing: Although the U.S. added more than 104,000 homes to its federally assisted housing stock in recent years, it lost more than 71,000 such homes. Affordability restrictions are set to expire for more than 374,000 federally assisted homes in the next five years, and about 267,000 public housing homes failed recent inspections, meaning they likely require immediate investment."