only the following uses may be established within a planned residential development: (1) Single-family detached dwellings . (2) Attached single-family dwellings such as townhouses, duplexes, quadruplexes when not exceeding 30 percent of all dwelling units within the PRD.
Read it in the chapter →How this ordinance defines it
The operative definition is the local one. Codes routinely subdivide a category into tiers — “day care 2, family”, “group home 2” — and attach different permissions to each, so only South Hill’s own text settles what this covers.