Pennsylvania Statutes Title 53 P.S. Municipal and Quasi-Municipal Corporations § 10914.1. Time limitations

(a) No person shall be allowed to file any proceeding with the board later than 30 days after an application for development, preliminary or final, has been approved by an appropriate municipal officer, agency or body if such proceeding is designed to secure reversal or to limit the approval in any manner unless such person alleges and proves that he had no notice, knowledge, or reason to believe that such approval had been given.  If such person has succeeded to his interest after such approval, he shall be bound by the knowledge of his predecessor in interest.  The failure of anyone other than the landowner to appeal from an adverse decision on a tentative plan pursuant to section 709   1 or from an adverse decision by a zoning officer on a challenge to the validity of an ordinance or map pursuant to section 916.2   2 shall preclude an appeal from a final approval except in the case where the final submission substantially deviates from the approved tentative approval.

(b) All appeals from determinations adverse to the landowners shall be filed by the landowner within 30 days after notice of the determination is issued.