An Act prohibiting certain liens and claims against real property; providing for entitlement to liens for certain contractors, subcontractors, sub-subcontractors and suppliers; providing for notices, for filing, service, attachment of and procedures to enforce lien claims, for forfeiture of lien rights, for priority of mortgages over construction liens, for discharge of lien claims and for bond or security in favor of lien claimants; prohibiting waivers of construction liens under certain circumstances; imposing duties on prothonotaries; providing for procedure to obtain judgment, for appeals, for revival of judgments and for execution on judgment; and repealing the Mechanics' Lien Act of 1963.