The R-8 District is designed for single family attached residential units. For the purpose of administering this Article, single family attached residential units shall be defined as a dwelling accommodation within a building containing more than one but not more than six single family dwelling units, provided each separate dwelling unit:
a.
Is attached to other similar dwelling units by one or more party walls, or portions thereof, extending from the foundation to the roof;
b.
Provides at least two separate means of access to the outside for each dwelling unit.
A single family attached residential unit may include a building or structure in fee simple, condominium, or cooperative ownership, or any combination thereof.