Maine: Mechanic's Lien Deadlines & Notice Requirements

The short answer

Maine's mechanic's lien reaches an unusually wide group of people: not
just contractors, subcontractors, laborers, and suppliers, but also
surveyors, architects, licensed foresters, engineers, equipment owner-
lessors, and even real estate licensees owed a sales commission — all by
virtue of a contract with, or mere consent of, the property owner. A
claimant who contracted directly with the owner just has to sue within
120 days of finishing the work to preserve and enforce the lien. A
claimant who did NOT contract with the owner faces two extra layers: the
owner can head the lien off in advance by sending written notice
disclaiming responsibility for future work, and the claimant must record
a sworn statement with the registry of deeds within 90 days of finishing
(and mail a copy to the owner) or the lien dissolves outright — on top of
the same 120-day suit deadline every claimant faces. A separate notice
lets a non-privity claimant cap the owner's total exposure at whatever's
still owed to the general contractor, using a mandatory statutory warning
that failing to withhold payment "may result in your paying twice."
Enforcement by attachment gets its own, longer 180-day window.

Requirements one by one

Governing law

Maine's private mechanic's lien lives in 10 M.R.S. Part 7, Chapter 603,
"Buildings, Lots, Wharves and Piers; Labor and Materials" (§§ 3251-3269).
It's an older, single-chapter scheme, most recently touched by a 2025
technical-corrections act that only updated gendered pronouns and
cross-references, not substance. Notably, the lien arises by virtue of a
contract WITH or by mere CONSENT of the owner (§ 3251) — a broader trigger
than the "by contract" language most states use.

Who can claim

Section 3251 casts an unusually wide net: anyone performing labor or
furnishing labor or materials (including machine repair parts), or
performing services as a surveyor, architect, licensed forester, or
engineer, or as a real estate licensee, or as an owner-renter, owner-
lessor, or owner-supplier of equipment, for erecting, altering, moving,
or repairing a house, building, or appurtenances — including certain
municipally-owned public buildings, named right in this private-lien
chapter — or for constructing, altering, or repairing a wharf or pier, or
for "selling any interest in land, improvements or structures." That last
category means an unpaid real estate agent's sales commission can itself
carry a lien on the property. Separately, §§ 3266-3268 let a labor union
or organization bring a lien action collectively on behalf of the workers
it represents, covering wage-based liens including fringe benefits like
health and retirement plans.

Preliminary notice

Two notices run in opposite directions here, and neither is required just
to have some lien right. First, an owner-initiated "opt out": if the
claimant isn't under contract with the owner, § 3252 lets the owner head
off a lien for labor or materials "not then performed or furnished" by
giving that claimant written notice that the owner won't be responsible.
Second, a claimant-initiated protective notice: § 3255(3) lets a non-
privity claimant give the owner written notice carrying a mandatory
statutory warning at the top — "Under Maine law, your failure to assure
that [the claimant] is paid before further payment by you to [the
contractor] may result in your paying twice" — which caps the owner's
total exposure to non-privity claimants at whatever remains owed to the
general contractor as of that point.

Deadline to file the lien

This splits sharply by privity. A claimant with a direct contract with the
owner doesn't need to record anything at all — § 3253(2) exempts them
entirely from the recording step described next, leaving only the 120-day
court-action deadline covered below. A claimant WITHOUT a direct owner
contract must, within 90 days after ceasing to labor, furnish materials,
or perform services, record a sworn statement of the amount due with the
register of deeds AND mail a copy to the owner by ordinary mail (a post-
office mailing certificate alone is "conclusive proof of receipt" — no
certified mail needed) — or, in the statute's words, "the lien ... is
dissolved."

Notice of completion effect

Nothing in Chapter 603 lets an owner record a notice of completion,
substantial completion, or termination to shorten any deadline in the
chapter. Both the 90-day recording window and the 120-day suit deadline
run from the claimant's own last day of labor or furnishing, regardless of
anything the owner records.

Serving the lien on the owner

For a non-privity claimant, § 3255(1) actually delays service rather than
requiring it quickly: the claimant "may not serve the complaint and
summons ... on the owner until 30 days after the date of filing of the
complaint," and the usual civil-rules deadline for filing a return of
service is tolled for that same 30 days. Separately, whoever records the
90-day statement under § 3253(1) must mail — not necessarily serve — a
copy to the owner, and a simple post-office mailing certificate is
conclusive proof the owner got it.

Deadline to sue to foreclose

Section 3255(1) gives every claimant 120 days after their last labor or
furnishing to file the court action that both preserves and enforces the
lien — filing and foreclosing are the same act in Maine, not two separate
deadlines stacked on each other. If the owner dies, is adjudicated
bankrupt, or has an insolvency warrant issued against their estate within
those 120 days and before an action starts, § 3256 extends the deadline:
the action may instead be brought within 90 days of that event. Separately,
if a claimant chooses to enforce by attachment of the property rather than
relying on the underlying lawsuit alone, § 3262 gives that attachment step
its own, longer window: it "shall be made within 180 days after the last
of the labor or services are performed ... and not afterwards."

Homestead/residential extras

No general homestead or residential formality applies to an ordinary
contractor's, subcontractor's, or supplier's lien claim — the same rules
and deadlines in §§ 3251-3265 apply whether the property is a private home
or a commercial building. The one residential-specific carve-out in the
chapter is different in kind: § 3269 exempts "any building designed for
occupancy by not more than 4 families" from the labor-organization
collective-lien mechanism in §§ 3266-3268. That means a union can't bring
its collective wage-lien action on a small residential building — the
individual workers have to pursue their own claims there instead.

What trips people up

The privity split is the single biggest trap: a general contractor who
contracted directly with the owner only has to worry about the 120-day
suit deadline, while a subcontractor or supplier who didn't must ALSO hit
the separate 90-day recording deadline — and missing that one dissolves
the lien even if the 120-day suit is still timely. Second, the § 3255(1)
rule requiring a non-privity claimant to WAIT 30 days before serving the
complaint on the owner is easy to get backwards — most litigants assume
faster service is always better, but here early service on the owner is
actually barred. Third, the § 3255(3) "pay twice" warning notice isn't
just a formality: an owner who receives it, or who's served with a lien
action, and then keeps paying the general contractor beyond what was owed
at that moment, can end up paying twice — once to the general contractor
and again to satisfy the subcontractor's lien for the excess.

Common questions

Do I need to send a notice before I start work in Maine?
Not to have some lien right. But if you're not contracting directly with
the owner, sending the § 3255(3) notice with its mandatory "may result in
your paying twice" warning helps cap what you can ultimately recover
correctly, and protects you if the owner keeps paying the general
contractor after receiving it.

I'm a subcontractor. What happens if I miss the 90-day recording
deadline but still sue within 120 days?
The lien is dissolved regardless of the timely lawsuit — § 3253(1) applies
independently of § 3255's 120-day suit deadline, and a non-privity
claimant needs to satisfy both.

Can I get more time if the property owner dies or goes bankrupt?
Yes — if that happens within the original 120 days and before you've
filed suit, § 3256 gives you 90 days from that event instead, and the
lien is extended accordingly.

Statutes and sources

• 10 M.R.S. § 3251 (lien established) —
  https://legislature.maine.gov/statutes/10/title10sec3251.html
  (accessed 2026-07-05)
• 10 M.R.S. § 3252 (prevention of lien) —
  https://legislature.maine.gov/statutes/10/title10sec3252.html
  (accessed 2026-07-05)
• 10 M.R.S. § 3253 (dissolution unless claim filed; 90-day recording) —
  https://legislature.maine.gov/statutes/10/title10sec3253.html
  (accessed 2026-07-05)
• 10 M.R.S. § 3255 (liens preserved and enforced by action; 120-day
  deadline; notice to owner) —
  https://legislature.maine.gov/statutes/10/title10sec3255.html
  (accessed 2026-07-05)
• 10 M.R.S. § 3256 (extension of lien) —
  https://legislature.maine.gov/statutes/10/title10sec3256.html
  (accessed 2026-07-05)
• 10 M.R.S. § 3262 (enforcement by attachment; 180-day window) —
  https://legislature.maine.gov/statutes/10/title10sec3262.html
  (accessed 2026-07-05)
• 10 M.R.S. §§ 3266-3269 (labor-organization actions; residential
  buildings exemption) —
  https://legislature.maine.gov/statutes/10/title10ch603.pdf
  (accessed 2026-07-05)