The said surveyors or regulators, upon application to them made, shall have full power and authority to enter upon the land of any person or persons, in order to set out the foundations and regulate the walls to be built between party and party, as to the breadth or thickness thereof: Which foundation shall be laid equally upon the lands of the persons between whom such party wall is to be made; and the first builder shall be reimbursed one moiety of the charge of such party wall, or for so much thereof as the next builder shall have occasion to make use of, before such next builder shall any ways use or break into the said wall. The charge or value thereof to be set by the said regulators.
53 P.S. § 16663