New York Lien Law: Deadlines, Priority, and Waivers

New York Lien Law gives contractors, suppliers, judgment creditors, hospitals, taxing authorities, and community associations a way to attach a claim to real property until a debt is paid. The most common tool is the mechanic’s lien, which must be filed within four to eight months of the last work performed and lasts one year unless the lienholder starts a foreclosure action or gets a court extension. Other liens — judgment, tax, hospital, and condominium assessment — each run on their own deadlines and priority rules.

Who Can File a Mechanic’s Lien

Under Lien Law § 3, anyone who performs labor or supplies materials for a real property improvement can file a mechanic’s lien, provided the work was done with the owner’s consent or at the request of the owner’s agent, contractor, or subcontractor.¹ The statute covers contractors, subcontractors, laborers, material suppliers, landscape gardeners, and nursery operators. Architects, engineers, and surveyors qualify when their work contributes to a property improvement.

You do not need a direct contract with the owner. Subcontractors and material suppliers can file even though their contract runs through the general contractor. What matters is that the owner consented to the work, either directly or through someone authorized to run the project.¹

Consent gets trickier with tenant-ordered work. When a commercial lease requires the tenant to make specific improvements, New York courts treat those lease terms as an affirmative act of consent by the landlord, opening the landlord’s property to mechanic’s liens for that work. Even without an explicit lease requirement, a landlord’s conduct and relationship with the contractor can imply consent.

Filing Deadlines That Actually Matter

Miss the deadline and the lien is gone, no matter how legitimate the underlying debt. The clock runs from the last item of work performed or materials furnished, and the length depends on what kind of property is involved:

Single-family dwellings: four months after the last item of work or materials.²
Other private property: eight months after the last item of work or materials.²
Retainage claims: 90 days after the retainage was due to be released.²
Public improvements: before project completion or within 30 days afterward.³

You can also file while the work is still in progress. The dates above are outer limits, not required waiting periods. Some public entities, including the MTA, the School Construction Authority, and various state agencies, run their own lien processes separate from the general rules.³

How to File and Serve the Notice

Filing a mechanic’s lien means preparing a verified notice of lien and submitting it to the county clerk in the county where the property sits. “Verified” means the person filing signs the notice under oath before a notary public, confirming the contents are true.

The notice must include the claimant’s name and address, the property owner’s name, a description of the property with block and lot numbers, the amount claimed, the nature of the work or materials, and the date labor or materials were last provided. Errors in these details give the owner grounds to challenge the lien, so precision matters. Filing fees run in the neighborhood of $30 in New York City counties, with a small additional charge for the affidavit of service, and vary somewhat by county.

Serving the Owner

Filing alone does not complete the process. Under Lien Law § 11, the lienholder must serve a copy of the notice on the property owner in a window that starts five days before filing and closes 30 days after filing. Acceptable methods include personal delivery, leaving the notice at the owner’s last known residence with a person of suitable age, or sending it by certified or registered mail. For a corporate owner, service goes to an officer or managing agent.⁴

When the owner cannot be located and has no agent or attorney, the lienholder can post the notice conspicuously on the property between 9:00 a.m. and 4:00 p.m. Improper service is one of the most common reasons liens get thrown out. Document how and when you served the notice.

How Long a Lien Lasts and How to Extend It

A mechanic’s lien on private property is good for one year from the date the notice of lien was filed. If the lienholder does not start a foreclosure action and file a notice of pendency within that year, the lien expires automatically.⁵ There is no grace period and no way to revive an expired lien.

Before the one-year mark, the lienholder can apply for a court order extending the lien. Each extension runs up to one year, and a new order can be granted in each of two successive years, so a diligent lienholder can keep a claim active for roughly three to four years. Courts expect real activity on the underlying claim rather than passive extensions.

A lien can also stay alive without a direct extension: if someone else forecloses on a mortgage or another mechanic’s lien on the same property and files a notice of pendency, that proceeding keeps related mechanic’s liens active for its duration.⁶

Priority When Multiple Liens Exist

When several mechanic’s liens hit the same property, New York uses a parity rule instead of a first-to-file rule. Lien Law § 13 states that no mechanic’s lienholder gets priority over another based on when they filed. All mechanic’s liens share equally in the available funds. The one exception: laborers owed daily or weekly wages get preference over all other mechanic’s lien claimants.⁷

Parity applies only among mechanic’s lienholders. In the broader hierarchy, tax liens and purchase-money mortgages generally hold first position regardless of when they were recorded. A mechanic’s lien takes effect from the date the notice is filed with the county clerk.¹ Judgment liens attach only when docketed, and their priority runs strictly by filing order relative to other recorded claims.

Lien Waivers: What’s Enforceable

Under Lien Law § 34, any agreement waiving the right to file a mechanic’s lien before payment has been made is void as against public policy. The contract language does not matter. Neither does whether the contractor signed voluntarily. An advance waiver has no legal effect.⁸

Waivers signed at the same time as payment, or after, are a different story. A property owner can require a written waiver as a condition of releasing payment, and that waiver is enforceable. And once a notice of lien has been filed, the parties can agree in writing to subordinate, release, or satisfy it.⁸ For projects paid in installments, the standard practice is a partial waiver with each progress payment covering only that draw, and a final waiver at closeout.

Penalties for Inflated Liens

Filing a mechanic’s lien for more than you are actually owed carries real exposure. Under Lien Law § 39-A, if a court declares a lien void because the amount was willfully exaggerated, the filer becomes liable to the owner or contractor for:

The premium the owner paid on any surety bond posted to discharge the lien
Interest on any money deposited with the court to clear the lien
Reasonable attorney’s fees incurred in getting the lien discharged
The difference between the amount claimed in the lien and the amount actually owed

⁹

“Willful” is doing real work in that statute. An honest calculation error will not trigger § 39-A liability. Padding a lien to gain leverage in a payment dispute is what courts penalize. Because the damages include the full amount of the overstatement plus the owner’s legal costs, a claimant who inflates a $50,000 lien to $150,000 faces exposure to the $100,000 difference on top of bond premiums and attorney’s fees.

Trust Fund Duties for Contractors

Article 3-A of the Lien Law treats money received by contractors and subcontractors for a project as trust funds that must be used to pay the laborers, material suppliers, and subcontractors on that same project. The contractor is the trustee.

Diverting those funds is not just a civil problem. Under Lien Law § 79-A, a trustee who applies trust funds for anything other than the project’s trust purposes is guilty of larceny under the Penal Law: if the trustee received the funds as an owner and spent them before paying all trust claims, or if the trustee received them as a contractor or subcontractor and fails to pay a trust claim within 31 days of when it is due.¹⁰

Two defenses matter. Repaying someone who advanced money that was actually used for the project is not diversion. And a contractor who advanced personal funds for the project can reimburse themselves up to the amount of those advances. The burden of proving these exceptions falls on the contractor, and failing to keep the books and records required by the Lien Law creates a legal presumption that funds were diverted.¹⁰

Other Liens on New York Property

Judgment Liens

When a creditor wins a money judgment and dockets it with the county clerk, the judgment automatically becomes a lien on any real property the debtor owns in that county. A judgment lien is not tied to any work on the property. It can arise from any court-ordered debt.¹¹

A judgment lien lasts ten years and can be renewed by commencing an action within the year before it expires. It does not let the creditor seize the property outright, but it does allow a forced sale through foreclosure if the debt remains unpaid.

Debtors have protections. New York’s homestead exemption under CPLR § 5206 shields a portion of equity in a primary residence from judgment creditors. The exempt amount depends on the county and ranges from $102,400 to $204,825, with the highest protection in the more expensive regions of the state. These figures were last adjusted effective April 1, 2024, and the next update is scheduled for April 1, 2027.¹²

Creditors paid in full must file a satisfaction-piece with the county clerk. If they fail to do so within 20 days, the debtor can recover a penalty of $100 for judgments under $5,000 or $500 for judgments of $5,000 or more.¹³

Tax Liens

When a property owner falls behind on state or local taxes, the taxing authority can place a lien on the property. Tax liens hold the highest priority position, ahead of mortgages and mechanic’s liens. If the taxes remain unpaid, the municipality can eventually foreclose through an in rem proceeding.

Hospital Liens

Under Lien Law § 189, a hospital can file a lien against a patient’s personal injury settlement or judgment to recover unpaid medical bills. The lien is limited to the reasonable value of services provided and must be filed with the county clerk. It applies only when the patient has a personal injury claim from which the hospital can recover.

Condominium and HOA Liens

Condominium associations and homeowners’ associations can place liens on units whose owners fall behind on common charges or assessments. Under Real Property Law § 339-z, these liens take priority over most other claims against the unit, except for tax liens and first mortgages already recorded against the property.¹⁴

Discharging or Challenging a Lien

A mechanic’s lien can come off the property in several ways under Lien Law § 19:

Satisfaction. Once paid, the lienholder files a certificate stating the lien is satisfied or released, and the county clerk notes the discharge in the lien docket.⁶
Expiration. If the lienholder does not start a foreclosure action or get an extension within one year, the lien expires automatically.⁵
Bonding. The owner or contractor can post a surety bond equal to 110% of the lien amount. The bond substitutes for the property as security, clearing the real estate while the dispute continues against the bond.⁶
Court order. Under Lien Law § 59, the owner can serve the lienholder with a notice requiring them either to start a foreclosure action within a specified period (at least 30 days) or to appear in court and show cause why the lien should not be cancelled. If the lienholder does nothing, the court vacates the lien.¹⁵

The § 59 procedure is the owner’s practical remedy when a lienholder refuses to release a satisfied lien or is sitting on a stale claim. Bonding off the lien is often the fastest way to clear title while the underlying payment fight continues, since the lienholder’s claim stays fully secured against the bond. Mediation or arbitration under the underlying contract can channel the money dispute away from court, but the lien itself still has to be formally discharged through one of the statutory methods, whatever the parties agree on the debt.

1
New York State Senate. New York Lien Law 3 – Mechanic’s Lien on Real Property
2
New York State Senate. New York Lien Law 10 – Filing of Notice of Lien
3
NYC.gov. Public Improvement Lien (Mechanic’s Lien)
4
New York State Senate. New York Lien Law 11 – Service of Copy of Notice of Lien
5
New York State Senate. New York Lien Law 17 – Duration of Lien
6
New York State Senate. New York Lien Law 19 – Discharge of Lien for Private Improvement
7
New York State Senate. New York Lien Law 13 – Priority of Liens
8
New York State Senate. New York Lien Law 34 – Waiver of Lien
9
New York State Senate. New York Lien Law 39-A – Liability of Lienor Where Lien Has Been Declared Void on Account of Wilful Exaggeration
10
New York State Senate. New York Lien Law 79-A – Misappropriation of Funds of Trust
11
New York State Senate. New York Civil Practice Law and Rules 5203
12
Department of Financial Services. Amount Exempt from Judgments
13
New York State Senate. New York Civil Practice Law and Rules 5020 – Satisfaction-Piece
14
New York State Senate. New York Real Property Law 339-Z
15
New York State Senate. New York Lien Law 59 – Vacating of a Mechanic’s Lien