53 Pa. Stat. § 24396
Whenever the councils, of any city of the second class of this commonwealth, has made or shall hereafter make any amicable settlement or compromise with parties assessed with the cost of grading, paving, curbing or otherwise improving, any street or avenue in said city, in pursuance of the authority conferred upon them by the act to which this is a supplement, and any of said parties assessed has paid, or shall have paid, to such city, before such settlement or compromise, a larger proportion or amount of the lien or assessment against him than that fixed by the terms of such compromise or settlement as being in full of such lien or assessment, the said councils are hereby authorized and empowered to direct the repayment by said city, to such party or parties, the amount paid by him or them in excess of the amount or proportion of such lien or assessment, fixed by the terms of such compromise or settlement as aforesaid, and they are hereby authorized and empowered to make such appropriations as may be necessary for such repayments.
53 P.S. § 24396