In addition to the lawfully authorized uses permitted in each zoning district, the following additional uses are permitted in a residential planned unit development:
(A) Residential planned unit developments in the RS, RE-1, RE-2, and RD Zoning Districts.
(1) Detached single-family dwelling units;
(2) Semi-detached single-family dwelling units (1 dwelling unit joined to 1 other dwelling unit by a party wall);
(3) Attached single-family dwelling units, townhouses, and row houses in groups of no more than 5 dwelling units per building; and
(4) Uses authorized in the underlying zoning district by special use permit or after site plan review.
(B) Residential planned unit developments in the RM Districts.
(1) Semi-detached single-family dwelling units (1 dwelling unit joined to 1 other dwelling unit by a party wall);
(2) Attached single-family dwelling units, townhouses, and row houses in groups of no more than 5 dwelling units per building; and
(3) Multi-family dwellings or apartment dwellings.