Every structure or group of structures and uses, including those of an institutional, charitable or public nature, and every designed plot area or cluster units having services, facilities or utilities in common private usage and in common ownership or control by its occupants or which functions as an independent corporate property owner, or agent of management, shall be located upon and within a lot or plot of land which shall be fully dimensioned and designated as representing the area of responsibility and as may be established by ownership in full or partial fee or for lease under deed covenant, lease contract, or such other conditions of usage or occupancy legally established and recorded therefor; and description or plan of each lot or plot shall be filed separately or as part of a descriptive map of a PRD with the Borough Tax Assessor. The developer shall provide for and establish an organization for the ownership and maintenance of any common open space and such organization shall not be dissolved nor shall it dispose of any common open space by sale or otherwise (except to a homeowners' association or other organization conceived and established to own and maintain the common open spaces), without first offering to dedicate the same to the municipality or any other governmental agency.

Extension of a PRD. Any PRD originally established under the requirements of this section may be extended into adjoining zones by later additions of contiguous lands in parcels or units of not less than 50 acres each under the conditions established for development of the original PRD, provided that it shall be subject to the same procedure for approval and in conformity with the standards herein set forth.