‘Residential housing’ means one or more new or existing residential dwelling units financed pursuant to the provisions of this chapter for the primary purpose of providing decent, safe and sanitary dwelling accommodations for eligible families in need of housing, including any buildings, manufactured homes, mobile homes, mobile home parks, land, improvements, equipment, facilities, other real or personal property, or other related nonhousing facilities which are necessary, convenient or desirable in connection therewith, and including but not limited to streets, sewers, utilities, parks, site preparation, landscaping and other nonhousing facilities such as administrative, community, transportation, health, recreational, educational, commercial, retail, welfare and public facilities which the Division determines improve the quality of the residential living for eligible families.