The R-3 Planned Residential Development District is hereby established for the following purposes:
A.
To respond to the increasing urbanization and of growing demands for housing of various types and designs;
B.
To encourage innovations in residential development and renewals so that the growing demand for housing may be met by greater variety and type, design and layout of dwelling and by the conservation and more efficient use of open space ancillary to said dwellings;
C.
To provide a procedure which can relate to type, design and layout of residential development to the particular site involved in a manner consistent with the preservation of property values within existing neighboring residential areas;
D.
To encourage a more efficient use of land and of public services through private initiative;
E.
To insure that the increased flexibility of regulations over land development as authorized herein is carried out under such administrative standards and procedures and shall encourage the disposition of land development proposals without undue delays; and
F.
To encourage a pattern of development, which preserves open space, trees, natural topography, prevent soil erosion and provide for parks, playgrounds and recreational areas.