US-New YorkHow do I file a mechanic's lien in New York?
To file a mechanic's lien in New York, you must serve a Notice of Lien on the property owner and file it with the county clerk within 8 months (or 4 months for residential projects) of last furnishing labor or materials.
What the Law Says
New York’s mechanic’s lien law is governed by Article 2 of the Lien Law. It gives contractors, subcontractors, laborers, and material suppliers the right to secure payment for work or materials provided to improve real property.
To be valid, a mechanic’s lien must be filed with the county clerk where the property is located. The lien must be filed no later than 8 months after the claimant’s last day of work or delivery of materials — unless the project is residential (1–4 family dwellings), in which case the deadline is shortened to 4 months.
Before filing, the claimant must serve a Notice of Lien on the property owner (and sometimes the contractor or mortgagee) by certified mail or personal delivery. Service must occur at least 5 days before filing — but courts have held that strict compliance with service timing is essential.
The lien must include specific information: the claimant’s name and address, the owner’s name, a description of the property sufficient for identification, the amount claimed, and a statement of the nature of the labor or materials furnished.
Statutory TextEvery person performing labor upon, or furnishing materials for, the improvement of real property… shall have a lien for the value thereof upon such real property.
— Lien Law § 3 — Persons Entitled to Lien
Statutory TextNo lien shall be valid unless the notice of lien is filed in the office of the clerk of the county wherein the real property is situated within eight months after the performance of the last of such labor… except that, in the case of a lien for labor performed or materials furnished to a one-family, two-family, three-family or four-family dwelling, the notice of lien must be filed within four months.
— Lien Law § 10 — Time for Filing Notice of Lien
Statutory TextThe notice of lien shall be served upon the owner… not less than five days before the filing thereof.
— Lien Law § 11 — Service of Notice of Lien
What Courts Have Said
New York courts strictly enforce statutory requirements for mechanic’s liens. Defects in timing, service, or content often result in dismissal.
Court voided a lien because service of the Notice of Lien occurred only 3 days before filing — violating Lien Law § 11’s 5-day minimum requirement.
Held that a lien is strictly a creature of statute and must comply precisely with all statutory conditions to be enforceable.
What to Do
Confirm your eligibility under Lien Law § 3 (e.g., you performed labor or supplied materials for an improvement).
Calculate your deadline: 4 months for residential (1–4 family); 8 months for commercial or other properties — counting from your last day of work or delivery.
Prepare the Notice of Lien using Form L-1 (available from NY State Unified Court System or county clerks); include all required details per Lien Law § 12.
Serve the Notice of Lien on the property owner by certified mail (return receipt requested) or personal delivery at least 5 days before filing.
File the original Notice of Lien with the county clerk where the property is located — pay the filing fee ($10–$50, varies by county) — and obtain a stamped copy as proof of filing.
Enforce the lien by filing a lawsuit to foreclose within 1 year of filing the lien, or it expires automatically.
Sources
Not legal advice. This article is general information based on publicly available sources, written for educational purposes. Laws change and individual situations vary. Consult a licensed attorney in your jurisdiction before acting on anything you read here. Last reviewed: 2026-06-08.