A.
It is the intention of this article to provide areas of sufficient size and allowing reasonable flexibility in design and orientation for the establishment of a structure or group of structures which include multiple dwellings designed in a planned unit development of more than one building on a given site. The requirements of area, height, bulk and placement regulations, as they are usually applicable to individual buildings and individual lots of record would, in certain cases of large-scale development, have results affording less protection to the public health, safety and welfare than if a measure of flexibility were permitted. The permitting of these planned unit developments as special and particular land uses can, in certain cases, increase the desirability and convenience to the residents or occupants of the planned unit development without causing adverse effects on adjoining properties.
B.
Therefore, the Zoning Ordinance regulations relative to area, height, bulk and placement may, in the Planned Unit Development District, be modified by the Planning Commission, which, in its judgment, provides adequate open space and improvements for circulation, recreation, education, light, air and service needs of the tract when fully developed, provided that in no case may the density of the proposed planned unit development exceed that of the Zoning Ordinance requirements enumerated in Article XXV of this chapter, and provided further that the minimum site size for the residential planned unit development is five acres.
C.
Within the Residential Planned Unit Development District, the following regulations shall apply.