New Jersey Statutes Title 2A. Administration of Civil and Criminal Justice 2A § 44A-7

a. Within 10 days following the lodging for record of a lien claim, the claimant shall serve on the owner, or community association in accordance with section 3 of P.L.1993, c. 318 (C.2A:44A-3), and, if any, the contractor and subcontractor against whom the claim is asserted, a copy of the completed and signed lien claim substantially in the form prescribed by section 8 of P.L.1993, c. 318 (C.2A:44A-8) and marked “received for filing” or a similar stamp with a date and time or other mark indicating the date and time received by the county clerk. Service shall be by personal service as prescribed by the Rules of Court adopted by the Supreme Court of New Jersey or by:

b. The service of the lien claim provided for in this section shall be a condition precedent to enforcement of the lien; however, the service of the lien claim outside the prescribed time period shall not preclude enforceability unless the party not timely served proves by a preponderance of the evidence that the late service has materially prejudiced its position. Disbursement of funds by the owner, community association, a contractor or a subcontractor who has not been properly served, or the creation or conveyance of an interest in real property by an owner who has not been properly served, shall constitute prima facie evidence of material prejudice.