N.J. Stat. § 17:16C-66
No home repair contractor shall request or accept a certificate of completion signed by the owner prior to the actual completion of the work to be performed under the home repair contract.
Every such home repair completion certificate or agreement shall contain the following notice in 10-point bold type or larger, directly above the space provided for the signature of the owner.
"NOTICE TO OWNER
Do not sign this completion certificate or any agreement stating that you are satisfied with the entire project before this project is complete. Home repair contractors are prohibited by law from requesting or accepting a certificate of completion signed by the owner prior to the actual completion of the work to be performed under the home repair contract."
N.J.S. § 17:16C-66