42 Pa.C.S. § 5527.3: Reimbursement.

The defendant in the ejectment action under section 5527.1 (relating to ten year limitation) shall have the right to recover such costs for maintenance, improvements, repairs, renovations, taxes or other such expenses to benefit the real property as the defendant can prove by a preponderance of the evidence that were or should have been the responsibility of the record owners, their heirs, successors and assigns.