The agreement also involves about 4,000 families in New Orleans and neighboring St. Bernard Parish and about 1,000 more families in 37 states.
The Harris County Housing Authority will also build and operate a 33,000-square-foot facility in New Orleans to assist eligible families.
About 30,000 families are enrolled in the federal government's Disaster Housing Assistance Program.
Officials with U.S. Department of Housing and Urban Development say they chose the agency in Houston because of its track record in helping local evacuees.
