Mechanic's Lien Deadlines & Notice Requirements in New Jersey
At a glance
| Governing law | Construction Lien Law, N.J.S.A. 2A:44A-1 to -38 (P.L.1993, c.318, as amended) |
|---|---|
| Who can claim a lien | Only the first three tiers in the contract chain: the contractor in direct privity with the owner (which also covers a design professional or construction manager in privity), the subcontractor or supplier under the contractor, and the sub-subcontractor or supplier one tier below that (§§ 2A:44A-2, 2A:44A-3); a written, signed contract (or signed delivery slip for a supplier) is required to claim at all |
| Preliminary notice | Nonresidential claimants lodge the lien directly; residential claimants first lodge a Notice of Unpaid Balance and Right to File Lien within 60 days after last furnishing (§§ 2A:44A-6(a)(2), -21(b)(1)) |
| Deadline to file the lien | Nonresidential: within 90 days after last furnishing. Residential: within 10 days after receipt of the arbitration determination and within 120 days after last furnishing (§§ 2A:44A-6(a)(2), 2A:44A-21(b)(8)) |
| Notice of completion effect | None — no owner-recorded notice of completion or cessation shortens either the commercial or residential filing deadline; both run from the claimant's own last date of furnishing |
| Serving the lien on the owner | Serve the owner and any contractor/subcontractor against whom the claim runs within 10 days after lodging; personal service or simultaneous registered/certified mail or courier plus ordinary mail. Late service bars enforcement only if the late-served party proves material prejudice (§ 2A:44A-7) |
| Deadline to sue to foreclose | 1 year after the date of last work, services, material, or equipment provided, OR 30 days after receiving the owner's (or contractor's) written demand to sue, whichever comes first; missing either forfeits all rights to enforce the lien (§ 2A:44A-14(a)) |
| Homestead/residential extras | Residential claimants must strictly follow §§ 2A:44A-20 and -21: Notice of Unpaid Balance within 60 days; arbitration demand within 10 days of lodging unless a written alternative dispute process is agreed; lien within 10 days after determination and 120 days after last furnishing (§§ 2A:44A-5(c), -6(a)(2), -21(b)) |
Requirements one by one
Who can claim
Section 2A:44A-2 names contractors as first tier, subcontractors and suppliers in relation to a contractor as second tier, and subcontractors or suppliers to a second-tier claimant as third tier. The Act requires a signed written contract with the party against whom the lien is asserted; the supplier definition permits a signed delivery or order slip referring to the project. Section 2A:44A-3(a) bases the lien on contract work, services, material, or equipment.
Preliminary notice
For a residential construction contract, § 2A:44A-21(b)(1) makes the Notice of Unpaid Balance and Right to File Lien a condition precedent to filing the lien. It must be lodged within 60 days after the claimant's last covered work or furnishing. The nonresidential filing rule in § 2A:44A-6(a)(2) does not impose that preliminary notice.
Deadline to file the lien
Section 2A:44A-6(a)(2) allows 90 days after last furnishing for a nonresidential claim. A residential claim must be lodged within 10 days after the claimant receives the arbitrator's determination and within 120 days after last furnishing. Section 2A:44A-21(b)(8) makes a missed 10-day postdecision filing invalid.
Serving the lien on the owner
Under § 2A:44A-7, the claimant serves the completed, signed claim on the owner or community association and any contractor or subcontractor against whom it is asserted within 10 days of lodging it. Service may be personal or use simultaneous registered or certified mail or a qualifying courier, plus ordinary mail. Service is a condition of enforcement. If it is late, the party served late must prove material prejudice by a preponderance of the evidence before lateness defeats enforcement.
Deadline to sue to foreclose
Section 2A:44A-14(a) requires a Superior Court enforcement action within one year after last furnishing, or within 30 days after a qualifying written demand to sue from an owner, community association, contractor, or subcontractor. The earlier deadline controls, and a missed deadline forfeits the right to enforce the lien.
Homestead or residential rules
Section 2A:44A-5(c) requires strict compliance with the residential procedure in §§ 2A:44A-20 and -21. Unless the parties agree in writing to another dispute process, § 2A:44A-21(b)(3) requires an arbitration demand within 10 days after lodging the Notice of Unpaid Balance. The arbitrator decides the validity and amount of the potential lien under § 2A:44A-21(b)(4); the postdecision filing window is addressed above.
What trips people up
A residential claimant must leave enough time to lodge a Notice of Unpaid Balance, demand arbitration, obtain the determination, and file within both the 10-day postdecision window and the 120-day outside window. Filing the Notice of Unpaid Balance alone is insufficient under § 2A:44A-21(b)(1), (3), and (8).
For late service, § 2A:44A-7(b) treats disbursement of funds or conveyance without proper service as prima facie evidence of material prejudice. The late-served party still bears the burden of proving prejudice.
Common questions
Can a third-tier claimant file? Section 2A:44A-2 defines a third-tier claimant as a subcontractor or supplier to a second-tier claimant. The signed-contract requirement and the Act's supplier definition still apply.
Does a nonresidential claimant need arbitration? The Notice of Unpaid Balance and arbitration steps in § 2A:44A-21(b) apply to residential construction contracts. Section 2A:44A-6(a)(2) states the separate nonresidential filing deadline.
Does the one-year lawsuit period run from lien filing? No. Section 2A:44A-14(a)(1) measures it from the claimant's last provision of work, services, material, or equipment; a qualifying demand can make it shorter.
Statutes and sources
- N.J.S.A. 2A:44A-3(a) (lien entitlement) — https://lis.njleg.state.nj.us/nxt/gateway.dll/statutes/1/112/1460 (accessed 2026-10-06)
- N.J.S.A. 2A:44A-2 (definitions: contractor, first tier lien claimant) — https://lis.njleg.state.nj.us/nxt/gateway.dll/statutes/1/112/1459 (accessed 2026-10-06)
- N.J.S.A. 2A:44A-2 (contract and second- and third-tier definitions) — https://lis.njleg.state.nj.us/nxt/gateway.dll/statutes/1/112/1459 (accessed 2026-10-06)
- N.J.S.A. 2A:44A-5(c) (residential liens barred without strict compliance) — https://lis.njleg.state.nj.us/nxt/gateway.dll/statutes/1/112/1462 (accessed 2026-10-06)
- N.J.S.A. 2A:44A-21(b)(1) (Notice of Unpaid Balance, 60-day deadline) — https://lis.njleg.state.nj.us/nxt/gateway.dll/statutes/1/112/1476 (accessed 2026-10-06)
- N.J.S.A. 2A:44A-21(b)(3), (4), (8) (residential arbitration and filing) — https://lis.njleg.state.nj.us/nxt/gateway.dll/statutes/1/112/1476 (accessed 2026-10-06)
- N.J.S.A. 2A:44A-6(a)(2) (90-day commercial / 120-day residential filing deadline) — https://lis.njleg.state.nj.us/nxt/gateway.dll/statutes/1/112/1463 (accessed 2026-10-06)
- N.J.S.A. 2A:44A-7 (10-day service on owner) — https://lis.njleg.state.nj.us/nxt/gateway.dll/statutes/1/112/1464 (accessed 2026-10-06)
- N.J.S.A. 2A:44A-7(a)-(b) (service methods and late-service prejudice) — https://lis.njleg.state.nj.us/nxt/gateway.dll/statutes/1/112/1464 (accessed 2026-10-06)
- N.J.S.A. 2A:44A-14(a) (1-year / 30-day-demand suit deadline) — https://lis.njleg.state.nj.us/nxt/gateway.dll/statutes/1/112/1471 (accessed 2026-10-06)
Source links
Every statute quoted above, linked, with the date we checked it.
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