53 Pa. Stat. § 10501
The governing body of each municipality may regulate subdivisions and land development within the municipality by enacting a subdivision and land development ordinance. The ordinance shall require that all subdivision and land development plats of land situated within the municipality shall be submitted for approval to the governing body or, in lieu thereof, to a planning agency designated in the ordinance for this purpose, in which case any planning agency action shall be considered as action of the governing body. All powers granted herein to the governing body or the planning agency shall be exercised in accordance with the provisions of the subdivision and land development ordinance. In the case of any development governed by planned residential development provisions adopted pursuant to Article VII, however, the applicable provisions of the subdivision and land development ordinance shall be as modified by such provisions and the procedures which shall be followed in the approval of any plat, and the rights and duties of the parties thereto shall be governed by Article VII and the provisions adopted thereunder. Provisions regulating mobilehome parks shall be set forth in separate and distinct articles of any subdivision and land development ordinance adopted pursuant to Article V or any planned residential development provisions adopted pursuant to Article VII.
53 P.S. § 10501