Habitat for Humanity International official Web site. Habitat for Humanity is a nonprofit, ecumenical Christian housing organization building simple, decent, affordable housing in partnership with people in need. Volunteers and partner families provide most of the labor, and individual and corporate donors provide money and materials to build Habitat for Humanity houses. Habitat for Humanity houses are sold to partner families at no profit and with no interest charged; mortgage payments are used to build more houses. Habitat for Humanity has built more than 150,000 houses, working in all 50 U.S. states and 87 other countries around the world.