In any R-2 District, land, buildings or premises shall be used by right for only one or more of the following:
(a) Any use permitted in an R-1 District by right, in which case all the provisions and requirements of Chapter 1107 shall apply.
(b) Single-family attached (townhouse) dwellings.
(c) Park and playground, whether publicly-owned and operated by a homeowner or condominium association.
(d) Agricultural use, excluding commercial greenhouse.