New York Mechanic's Lien FAQ

Updated September 7, 2026. These answers summarize common New York mechanic's lien issues. The right procedure depends on the property, project and contract chain.

1. Who can file a mechanic's lien?

Qualifying contractors, subcontractors, laborers and suppliers may have lien rights under Lien Law § 3. The work or materials must satisfy the statutory requirements, including the necessary consent or request. A direct contract with the owner is not always required. Licensing, the claimant's role and amounts unpaid in the contract chain can affect the claim.

2. What is the filing deadline?

For private improvements, § 10 generally allows filing during the work or within eight months after the last qualifying work or materials. The usual period for a single-family dwelling is four months, but the statute contains an exception for certain developer-owned subdivision properties. A lien for retainage has a separate 90-day provision measured from when the retainage was due to be released. Do not assume that provision extends the deadline for all unpaid work.

For public improvements, § 12 generally permits filing before completion and acceptance and within 30 days afterward. This is a lien against contract funds, not public land. The claimant's own last day of work does not alone determine the public-improvement deadline.

3. Is filing enough?

No. A private lien also requires service and timely filing of proof. § 11 and § 11-b address the required recipients, methods and deadlines. The service window is generally five days before through 30 days after filing; proof of the required service must be filed within 35 days after the lien filing.

4. How long does the lien last?

The initial duration is generally one year. Continuation requires timely action under § 17 for private liens or § 18 for public liens. Single-family liens require a court order for extension. Foreclosure and notice-of-pendency requirements must also be assessed; simply filing a lawsuit is not a complete description of every continuation procedure.

5. What should an owner do after receiving a lien?

Check the amount, parties, property, filing and service records against the contract and payment ledger. Depending on the facts, options include settlement and a release, a discharge bond, a court challenge or defending foreclosure. § 19 describes discharge procedures. A bond changes the security for the claim; it does not automatically erase the debt. Respond promptly to any court papers.

6. What happens if the lien is inaccurate?

Some defects affect validity, but not every error automatically voids a lien. Willful exaggeration can result in the lien being declared void and damages under § 39-a when its requirements are met. The listed damages include the exaggerated amount, qualifying bond premiums or deposit interest, and reasonable attorney's fees for securing discharge. The statute does not impose automatic treble damages.

For help applying these rules, see Kushnick Pallaci PLLC's mechanic's lien services and New York lien-filing guide. Call (631) 752-7100 to discuss a particular matter.

General information only; this FAQ does not calculate a deadline for your project.