The Chicago Housing Authority (CHA) is a municipal corporation that oversees public housing within the city of Chicago. The agency's Board of Commissioners is appointed by the city's mayor, and has a budget independent from that of the city of Chicago. CHA is the largest rental landlord in Chicago, with more than 50,000 households. CHA owns over 21,000 apartments. It also oversees the administration of 37,000 Section 8 vouchers. The current acting CEO of the Chicago Housing Authority is Tracey Scott.