The legal effect of the recording of such agreements shall be to give constructive notice to subsequent purchasers, mortgagees, and/or judgment creditors of the parties to said agreements of the fact of the granting of such rights or privileges and/or of the execution of said releases, and the rights of the subsequent purchasers, mortgagees, and/or judgment creditors of the parties to said agreements shall be limited thereby with the same force and effect as if said subsequent purchasers, mortgagees, and/or judgment creditors had actually joined in the execution of the agreement or agreements aforesaid.
21 P.S. § 357