Following the filing of the Mechanic’s Lien with the County Clerk, do we have to serve copies upon the property owner or other contractors. What are the service requirements? How soon after should we file Affidavit of Service? The original mechanic's lien was filed with the NY County Clerk against the property owner and general contractor by subcontractor. The mechanic's lien release was obtained from the subcontractor together with final lien release and waiver. We are the general contractor company.