KB Home is a homebuilding company based in the United States, founded in 1957 as Kaufman & Broad in Detroit, Michigan. It was the first company to be traded on the NYSE as a home builder and was a Fortune 500 company from 2000 through 2008. Its headquarters are in Los Angeles, California.The company has built 550,000 homes since its founding. It builds homes primarily for first-time home buyers.