New Jersey: Mechanic's Lien Deadlines & Notice Requirements
The short answer
New Jersey calls it a 'construction lien' and limits it to the first three contract tiers: the prime contractor, and subs and suppliers one and two tiers below. On commercial work, the deadline to file the lien is a flat 90 days after last furnishing labor or material, then 10 days to serve it on the owner, then a year to sue. Residential work runs a completely different track: before you can even file, you must record a Notice of Unpaid Balance within 60 days and go through binding arbitration, all before the 120-day outside filing deadline.
| Governing law | Construction Lien Law, N.J.S.A. 2A:44A-1 to -38 (P.L.1993, c.318, substantially revised 2011); replaced the older Mechanics' Lien Law |
|---|---|
| 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 | No preliminary notice is required to create lien rights on commercial work. Residential work is the exception: a Notice of Unpaid Balance and Right to File Lien must be lodged within 60 days of last furnishing, as a condition precedent to filing any lien at all (§ 2A:44A-21(b)(1)) |
| Deadline to file the lien | Commercial: 90 days after the date the last work, services, material, or equipment was provided (§ 2A:44A-6(a)(2)). Residential: 120 days after the same trigger, but the lien claim itself can't be lodged until 10 days after an arbitrator rules on the underlying Notice of Unpaid Balance (§§ 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 | Within 10 days after lodging the lien claim for record, the claimant must serve a copy on the owner (and any contractor/subcontractor against whom the claim is asserted) by personal service or simultaneous certified/registered mail plus ordinary mail; late service isn't automatically fatal, but the burden shifts to the claimant to prove the late service didn't materially prejudice the other party (§ 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 construction liens are prohibited outright unless the claimant strictly complies with the separate Notice of Unpaid Balance-and-arbitration process in §§ 2A:44A-20 and -21: file the Notice within 60 days, demand AAA arbitration within 10 days after that, then lodge the actual lien claim within 10 days of the arbitrator's ruling and within the 120-day outside deadline (§§ 2A:44A-5(c), 2A:44A-21(b)) |
Compare this rule across all 50 states + DC →
The short answer
New Jersey's mechanic's lien is officially a "construction lien," and it's
narrower than most states': only the prime contractor and the two
subcontractor/supplier tiers directly below it can claim one at all. On
commercial projects the process is simple — file within 90 days of your last
day of work, serve the owner within 10 days after that, and sue within a
year. Residential work is a different world entirely: before you can even
record a lien, you have to file a Notice of Unpaid Balance within 60 days,
demand binding arbitration, and get a ruling — all inside a 120-day outside
deadline.
Requirements one by one
Governing law
New Jersey's lien law is the Construction Lien Law, N.J.S.A. 2A:44A-1 to
-38, enacted in 1993 and substantially revised by a 2011 amendment
(effective January 5, 2011). It replaced the state's older Mechanics' Lien
Law.
Who can claim
Lien rights stop at the third contractual tier. N.J.S.A. § 2A:44A-2 defines
a "contractor" as someone "in direct privity of contract with the owner,"
including a construction manager or a licensed architect, engineer,
surveyor, or landscape architect who contracts directly with the owner.
Subcontractors and suppliers one and two tiers below the contractor can also
claim, but a claimant needs a signed written contract — for a supplier, a
signed delivery or order slip referencing the project is enough — to have
lien rights at all. Suppliers to suppliers, and anyone further down the
chain, have no lien rights under this statute.
Preliminary notice
Commercial claimants don't need to send any notice before filing a lien.
Residential claimants face the opposite rule: § 2A:44A-21(b)(1) makes filing
a "Notice of Unpaid Balance and Right to File Lien" — lodged "within 60 days
following the last date that work, services, material or equipment were
provided" — "a condition precedent to the filing of any lien arising under a
residential construction contract." Skip it, and there's no lien to file at
all on that job.
Deadline to file the lien
Commercial work runs on a flat clock: § 2A:44A-6(a)(2) requires the lien
claim to be "lodged for record within 90 days following the date the last
work, services, material or equipment was provided." Residential work adds
a step in front of that deadline — the lien claim itself can't be lodged
until "10 days after receipt by the claimant of the arbitrator's
determination," and even then must land "within 120 days following" the
last day of work.
Notice of completion effect
New Jersey has no owner-recorded notice of completion or cessation that
shortens a claimant's filing window on either track. Both the 90-day
commercial deadline and the 120-day residential deadline are anchored to the
claimant's own last date of furnishing labor, services, material, or
equipment — not to any filing the owner controls.
Serving the lien on the owner
After filing, § 2A:44A-7 gives a claimant "10 days following the lodging for
record of a lien claim" to serve a copy on the owner and any contractor or
subcontractor the claim runs against, by personal service or by
simultaneous certified/registered mail plus ordinary mail. Late service
doesn't automatically kill the lien — the statute puts the burden on
whoever wasn't served on time to "prove by a preponderance of the evidence
that the late service has materially prejudiced its position," and treats
any disbursement of funds or conveyance made without proper service as
"prima facie evidence of material prejudice."
Deadline to sue to foreclose
§ 2A:44A-14(a) sets two independent triggers, whichever comes first: "one
year of the date of the last provision of work, services, material or
equipment," or "30 days following receipt of written notice ... from the
owner ... requiring the claimant to commence an action." Miss either
deadline and the claimant "shall forfeit all rights to enforce the lien"
and must discharge it from the record.
Homestead/residential extras
This is where New Jersey diverges most sharply from a typical lien statute.
§ 2A:44A-5(c) flatly bars any lien "for work, services, material or
equipment furnished pursuant to a residential construction contract unless
there is strict compliance with sections 20 and 21." Section 21 lays out the
sequence: file the Notice of Unpaid Balance within 60 days, demand American
Arbitration Association arbitration within 10 days after that, let the
arbitrator rule on the validity and amount of the claim, then lodge the
actual lien claim within 10 days of that ruling and inside the 120-day
outside deadline. There's no equivalent arbitration gate on commercial work.
What trips people up
Residential claimants who treat this like a normal 120-day filing deadline
miss the point: the arbitration process has to run its course, with its own
10-day trigger points, before a lien can even be lodged — waiting until day
100 to start the Notice-of-Unpaid-Balance process leaves no room for the
arbitration steps to finish in time. On commercial work, the late-service
rule under § 2A:44A-7 is more forgiving than it looks at first: missing the
10-day service window isn't automatically fatal, but a claimant who let the
owner pay out funds or sell the property in the meantime will have a hard
time proving no material prejudice resulted.
Common questions
I'm a sub-subcontractor two levels down from the prime contractor — can I file a lien?
Yes, but that's generally the last tier the statute reaches. Anyone further
down the chain, and any supplier to a supplier, has no lien rights under
this act.
Do I have to go through arbitration on a commercial project too?
No — the Notice of Unpaid Balance and arbitration requirement in § 2A:44A-21
applies only to residential construction contracts. Commercial claimants
file the lien claim directly.
What happens if I don't serve the owner within 10 days of filing?
It isn't automatically fatal, but you'll have to show the late service
didn't materially prejudice the owner or another party — and if they paid
out money or sold the property in the meantime, the statute treats that as
evidence against you.
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 2026-07-04) - N.J.S.A. 2A:44A-2 (definitions: contractor, first tier lien claimant) —
https://law.justia.com/codes/new-jersey/title-2a/section-2a-44a-2/
(accessed 2026-07-04) - 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 2026-07-04) - 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 2026-07-04) - 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 2026-07-04) - 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 2026-07-04) - 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 2026-07-04)
Source links
Every statute quoted above, linked, with the date we checked it.