Cal. Health & Saf. Code § 50073.5
"Housing development," for the purpose of the California Housing Finance Agency, means any existing structure of five or more dwelling units or any work or undertaking of five dwelling units or more of new construction or rehabilitation for the provision of housing financed pursuant to the provisions of this division for the primary purpose of providing decent, safe, and sanitary housing for persons and families of low or moderate income. A housing development may include housing for other economic groups as part of an overall plan to develop new or rehabilitated communities or neighborhoods, where housing for persons and families of low or moderate income is a primary goal. A housing development may include any buildings, land, equipment, facilities, or other real or personal property which the agency determines pursuant to its rules and regulations to be necessary or convenient in connection with the provision of housing pursuant to this division, including, but not limited to, streets, sewers, utilities, parks, site preparation, landscaping, and other nonhousing facilities, such as administrative, community, health, recreational, educational, commercial facilities, and child-care facilities which the agency determines are an integral part of a housing development or developments.
Ca. Health and Saf. Code § 50073.5