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Mechanics Lien Deadlines in New Jersey

In New Jersey, a lien claim must be lodged within 90 days after the last work or materials (120 days on residential projects, after a Notice of Unpaid Balance and arbitration), and suit must be filed within 1 year after the last work or within 30 days after a written demand.

Last checked . General information, not legal advice.

New Jersey at a glance

Deadline to record lien
90 days after last work (120 days residential)
Residential: the lien claim is lodged within 10 days after the arbitrator's decision and within 120 days after last work.
Preliminary notice required
Yes in some cases (residential: Notice of Unpaid Balance)
On residential construction a Notice of Unpaid Balance and Right to File Lien must be lodged within 60 days after last work, followed by arbitration, as a condition precedent to the lien.
Deadline to enforce lien
1 year after last work (30 days after demand)
Whichever comes first; filed in Superior Court in the county where the property is located.

Sources

Last checked

The rules in New Jersey

How long does a contractor have to file a mechanics lien in New Jersey?

Deadline to record lien in New Jersey: 90 days after last work (120 days residential). Residential: the lien claim is lodged within 10 days after the arbitrator's decision and within 120 days after last work.

Is a preliminary notice required before filing a mechanics lien in New Jersey?

Yes in some cases (residential: Notice of Unpaid Balance). Preliminary notice required in New Jersey: yes in some cases (residential: notice of unpaid balance). On residential construction a Notice of Unpaid Balance and Right to File Lien must be lodged within 60 days after last work, followed by arbitration, as a condition precedent to the lien.

How long do you have to foreclose a mechanics lien in New Jersey?

Deadline to enforce lien in New Jersey: 1 year after last work (30 days after demand). Whichever comes first; filed in Superior Court in the county where the property is located.

Where do the New Jersey mechanics lien deadlines come from?

The rules above come from N.J.S.A. 2A:44A-6, N.J.S.A. 2A:44A-21 and N.J.S.A. 2A:44A-14. Each source is linked on this page. We last checked them in October 2026.

What this means in practice

Deadlines often differ by role. The period for a general contractor who dealt directly with the owner can be different from the period for a subcontractor or supplier, and residential projects can have their own rules. Check which category fits before relying on a single number.

The event that starts the clock matters as much as the length of the period. Depending on the statute, it can be the last day labor or materials were furnished, completion of the project, or the recording of a notice of completion or commencement by the owner. Keeping dated records of the last work performed helps establish the start date.

Recording a lien is not the end of the process. If the debt is not paid, the claimant generally has to file a lawsuit to foreclose the lien within the enforcement period, or the lien expires. When the debt is paid, the owner will usually want a signed lien release recorded so the title is clear.

General information, not legal advice. Laws change, and cities can add their own rules, so check the current statute before you rely on it.