New York Mechanic Lien Law: Complete Guide
Your Complete Guide to Mechanic's Lien Rights Under NY Mechanic Lien Law §40 — Private Works, Public Funds Mechanic Liens & Payment Bond Claims
New York mechanic lien deadline table with toggles for project type and claimant type.
New York Preliminary Notice & Mechanic Lien Deadlines
Select your project type and role to see the deadlines that apply to you.
Prime Contractor — In privity with the property owner
File the Notice of Mechanic's Lien with the county clerk within 8 months after the last date of furnishing labor or materials.
The 4-month filing window applies only to single-family dwellings. Two-family dwellings follow the standard 8-month rule.
Serve a copy of the Notice of Lien on the owner within 5 days before OR within 30 days after filing. File proof of service with the county clerk within 35 days after the lien is filed, or the lien terminates.
Commence an action to foreclose the mechanic's lien within 1 year after the lien is filed.
A lien may be extended for one additional year by filing a notice of extension with the county clerk before expiration.
If any party serves a Notice to Foreclose under Lien Law §59, suit must be filed within 30 days or the lien is discharged.
Preliminary Notice
Mechanic Lien
File the Notice of Mechanic's Lien with the county clerk within 8 months after the last date of furnishing labor or materials.
The 4-month filing window applies only to single-family dwellings. Two-family dwellings follow the standard 8-month rule.
Serve a copy of the Notice of Lien on the owner within 5 days before OR within 30 days after filing. File proof of service with the county clerk within 35 days after the lien is filed, or the lien terminates.
Enforcement
Commence an action to foreclose the mechanic's lien within 1 year after the lien is filed.
A lien may be extended for one additional year by filing a notice of extension with the county clerk before expiration.
If any party serves a Notice to Foreclose under Lien Law §59, suit must be filed within 30 days or the lien is discharged.
New York Mechanic Lien Law Overview
New York construction mechanic lien rights are governed by the New York State Consolidated Laws, Chapter 33, Article 2, Mechanic Lien Law §40 et seq. This statutory framework protects the payment rights of contractors, subcontractors, and materialmen who perform work or furnish materials for the improvement of real property in the State of New York. Materialman-to-materialman claims are not entitled to mechanic's lien protection.
Unlike many states, New York does not require a preliminary notice as a prerequisite to filing a mechanic's lien. However, owners and contractors may demand an itemized statement from a lienor detailing the labor and materials furnished and the contract terms, to which the lienor must respond within 5 days. Lienors may also demand to examine books or records of a trustee or demand a verified statement regarding trust assets once every 30 days.
The Notice of Mechanic Lien on private projects must be filed during performance but not later than 8 months from the lienor's last furnishing of labor or materials (4 months for single family dwellings). A copy must be served upon the owner, contractor, and subcontractor 5 days before through 30 days after filing. Proof of service must be recorded with the County Clerk within 35 days of filing, or the notice terminates as a mechanic lien. For retainage-only mechanic liens, the mechanic lien must be filed within 90 days of when retainage became due.
New York also provides separate remedies for public works projects: a mechanic lien against unpaid retention under NYS Mechanic Lien Law §5 and payment bond claims under State Finance Law §137. Important considerations include that if the owner has paid the general contractor, the mechanic's lien is valid only to the extent funds remain unpaid, the mechanic lien must be filed prior to transfer of property, and claimants must be registered to do business in New York to file suit. National Lien & Bond provides authoritative guidance on every aspect of New York construction mechanic lien compliance.
New York Notice Requirements
Notice obligations that must be satisfied before filing a mechanic lien in New York.
New York does not require a preliminary notice before filing a mechanic's lien. However, after filing a Notice of Mechanic's Lien with the county clerk, the lienor must serve a copy of the notice on the property owner within 30 days of filing (NY Lien Law §11). Service may be made by personal service or by registered or certified mail to the owner's last known address.
For liens filed against public improvements (state or municipal projects), the lienor must file the notice of lien with the head of the department having charge of the public improvement, and must also file with the county clerk if the improvement is on real property. Public improvement liens under NY Lien Law §5 must be filed within 30 days after final acceptance — there is no 8-month period as with private work.
A lienor who has filed a mechanic's lien can extend the lien for one additional year by filing a notice of extension with the county clerk before the original expiration date. After a lien is filed, any party with an interest in the property may serve a Notice to Foreclose (NY Lien Law §59), which requires the lienor to file suit within 30 days — failing to do so discharges the lien.
How to File a Mechanic Lien in New York: Step-by-Step
An overview of the statutory process — each step is technical and typically handled by an attorney.
- 1
Confirm eligibility: Verify that you have furnished labor, materials, or professional services for the improvement of real property in New York and that you are within the filing period (8 months from last furnishing for most private projects; 4 months for single/two-family residences).
- 2
Prepare the Notice of Mechanic's Lien: Complete the Notice under NY Lien Law §9, which must include: (a) the lienor's name and address; (b) the owner's name and address; (c) the name of the person with whom the contract was made; (d) the labor performed or materials furnished; (e) the agreed price or value; (f) the amount unpaid; and (g) a description of the property.
- 3
File the Notice with the county clerk: File the Notice of Mechanic's Lien with the county clerk of the county in which the property is located (NY Lien Law §10). Pay the applicable filing fee.
- 4
Serve a copy on the property owner: Serve a copy of the filed Notice on the property owner within 30 days of filing by personal service or certified/registered mail (NY Lien Law §11).
- 5
File suit to enforce within 1 year: File an action to foreclose the lien in Supreme Court within 1 year of the filing date. Alternatively, file a notice of extension before the 1-year period expires to extend the lien for another year.
- 6
Respond to Notice to Foreclose: If any party serves a Notice to Foreclose on your lien, you must file suit within 30 days or the lien is discharged.
Topics on This Page
New York Mechanic Lien Law: Key Topics
Navigate the critical compliance areas for New York construction mechanic lien law.
Notice Requirements
Itemized statement demands, trustee examination rights, and service requirements for private and public works under New York law
Mechanic Lien Deadlines
Notice of Mechanic Lien filing deadlines (8 months private, 4 months single family dwelling), retainage rules, proof of service requirements, and public works mechanic lien filing
Mechanic Lien Enforcement Deadlines
1-year mechanic lien enforcement period, mechanic lien extension procedures, Notice of Pendency rules, private bond suit deadlines, and public works enforcement
Frequently Asked Questions
What statute governs mechanic's liens in New York?
Private works mechanic's lien rights are governed by NY Mechanic Lien Law §40 et seq. Public works mechanic liens against unpaid retention fall under NYS Mechanic Lien Law §5. Private payment bond claims are under General Obligations Law §5-322.3. Public works payment bond claims are under State Finance Law §137.
Is a preliminary notice required in New York?
No. New York does not require a preliminary notice as a prerequisite to filing a mechanic's lien on either private or public projects. However, owners and contractors may demand an itemized statement from the lienor, to which the lienor must respond within 5 days.
What is the deadline to file a mechanic's lien in New York?
For private projects, the Notice of Mechanic Lien must be filed within 8 months of last furnishing labor or materials (4 months for single family dwellings). For retainage-only mechanic liens, file within 90 days of when retainage became due. Public works mechanic liens must be filed before or within 30 days after completion and acceptance.
How long do I have to enforce a New York mechanic's lien?
A mechanic lien is good for 1 year from filing. You must commence an action AND file a Notice of Pendency within the mechanic lien period. The mechanic lien may be self-extended for 1 year (except single family dwellings, which require court order). Notice of Pendency lasts 3 years.
Who can file a mechanic's lien in New York?
Contractors, subcontractors, and materialmen may file a mechanic's lien. However, materialman-to-materialman claims are not entitled to mechanic's lien protection. Claimants must be registered to do business in New York to file suit.
Can I file a mechanic lien on a public project in New York?
You cannot file a traditional mechanic's lien on public property, but New York provides a mechanic lien against unpaid retention under NYS Mechanic Lien Law §5. Payment rights on public projects may also be pursued through payment bond claims under State Finance Law §137.