; (B) promotes economic competitiveness or growth and creates new economic opportunity; and (C) uses natural resources responsibly, minimizes ecological and environmental impacts, and improves community resilience to natural disasters while preserving the ability of future generations to meet their own needs. (21) Transit-oriented development The term transit-oriented development means high-density, walkable, accessible to individuals with disabilities, and location-efficient mixed-use development, including commercial development, and affordable and market-rate housing, that is within walking distance of and accessible to 1 or more public transportation facilities with frequent service. (22) Unit of general local government The term unit of general local government means— (A) a city, county, town, township, parish, village, or other general purpose political subdivision of a State; or (B) a combination of general purpose political subdivisions, as determined by the Secretary. (23) Unit of special purpose local government The term unit of special purpose local government — (A) means a division of a unit of general local government that serves a special purpose and does not provide a broad array of services; and (B) includes an entity such as a school district, a housing agency, a transit agency, and a parks and recreation district. (24) Very low-income family The term very low-income family has the meaning given the term in section 3(b) of the United States Housing Act of 1937 ( 42 U.S.C. 1437a(b) ). 5. Office of sustainable housing and communities (a) Office established There is established in the Department an Office of Sustainable Housing and Communities, which shall— (1) coordinate the policies of the Department with those of other Federal agencies that— (A) encourage locally directed comprehensive and integrated planning and development at the State, regional, and local levels; (B) encourage coordinated public investments through the development of comprehensive regional plans