53 Pa. Stat. § 30655
All plans of streets for public use, and all plans, plots, or replots of lands laid out in building lots, and the streets, alleys, or other portions of the same intended to be dedicated to public use, or for the use of purchasers or owners of lots fronting thereon or adjacent thereto, and located within the city limits, shall be submitted to the City Planning Commission, and approved by it, before it shall be recorded. And it shall be unlawful to receive or record such plan in any public office, unless the same shall bear thereon, by endorsement or otherwise, the approval of the City Planning Commission. The disapproval of any such plan by the City Planning Commission shall be deemed a refusal of the proposed dedication shown thereon. The approval of the commission shall be deemed an acceptance of the proposed dedication, but shall not impose any duty upon the city concerning the maintenance or improvement of any such dedicated parts, until the proper authorities of the city shall have made actual appropriation of the same by entry, use, or improvement; and owners and purchasers shall be deemed to have notice of the published plans, maps, and reports of the commission affecting such property within its jurisdiction.
53 P.S. § 30655