In order to qualify for a density bonus and one or more incentives under this chapter, a housing development must consist of five or more dwelling units and meet one or more of the following criteria:

    A.    Ten percent of the total units are designated as restricted units for very low income households; or

    B.    Twenty (20) percent of the total units are designated as restricted units for lower income households; or

    C.    Fifty (50) percent of the total units are designated as restricted units for senior households. (Ord. 93-5 § 1 (part): prior gen. code § 8-403)