Maryland: Mechanic's Lien Deadlines & Notice Requirements

The short answer

Maryland doesn't work like most other states in this survey: there's no
lien until a judge says there is one. A claimant files a Petition to
Establish a Mechanic's Lien within 180 days of last working on the job, the
court reviews it and can order the owner to show cause why the lien
shouldn't attach, and only then does an actual lien come into being. A
subcontractor — anyone without a direct contract with the owner — has an
extra hurdle: it must send the owner written notice within 120 days of
finishing its own work, or it has no lien right at all. After the lien
attaches, the claimant gets a year to bring a further petition to enforce
it. Residential construction of the owner's own home adds one more
protection for the owner that doesn't exist anywhere else in the chapter.

Requirements one by one

Governing law

Maryland's mechanic's lien law is Title 9, Subtitle 1 of the Real Property
Article (§§ 9-101 to 9-114). Its defining structural feature, unlike most
states surveyed here, is that filing doesn't create the lien — it only
starts a court proceeding that may or may not end with the court actually
establishing one. A lien claim also loses to any bona fide purchaser who
buys the property before the lien is established: § 9-102(d) says a
building "may not be subjected to a lien under this subtitle if, prior to
the establishment of a lien ..., legal title has been granted to a bona
fide purchaser for value."

Who can claim

Section 9-101 defines a "contractor" as anyone with a direct contract with
the owner, and a "subcontractor" as anyone else — "a person who has a
contract with anyone except the owner or his agent" — a definition broad
enough to reach every tier below the prime contractor without needing to
name them individually. Section 9-102(a) extends lien rights to work,
materials, and a specific list of services: building or landscape
architectural services, engineering services, land surveying services, and
interior design services provided by a certified interior designer, among
others. A new building qualifies automatically; a repair, rebuild, or
improvement to an existing building only qualifies if it adds at least 15%
of the building's value (§ 9-102(a)) — or 25% if the work was ordered by a
tenant rather than the owner (§ 9-103(c)(2)), in which case the lien only
reaches the tenant's own leasehold interest.

Preliminary notice

Maryland doesn't require any notice before or during the work itself. What
it requires instead is a post-work notice tied to the subcontractor's own
lien right: § 9-104(a)(1) says a subcontractor "is not entitled to a lien
under this subtitle unless, within 120 days after doing the work or
furnishing the materials," it gives the owner written notice of intent to
claim a lien. This isn't a step that merely narrows an existing lien right
the way a late notice does in some other states — without it, a
subcontractor simply has no lien at all. A contractor with a direct
contract with the owner owes no such notice.

Deadline to file the lien

Section 9-105(a) requires a claimant to "file proceedings in the circuit
court for the county where the land or any part of the land is located
within 180 days after the work has been finished or the materials
furnished." That filing is a petition — with a supporting affidavit and
copies of the underlying contract documents — asking the court to establish
the lien; it is not itself a recorded lien the way a filing is in most
other states.

Notice of completion effect

Nothing in Subtitle 1 lets an owner record a notice of completion or
cessation to shorten any deadline. Both the subcontractor's 120-day notice
and the 180-day petition deadline run strictly from the claimant's own last
day of work or delivery, regardless of anything the owner files or
records.

Serving the lien on the owner

Because nothing is recorded before the court gets involved, there's no
separate "serve the recorded lien" step. Instead, § 9-106(a)(1) puts the
court in charge of service: once the petition is filed, "the court shall
review the pleadings and documents on file," and if it finds the lien
should attach, it issues an order directing the owner "to show cause within
15 days from the date of service on the owner of a copy of the order,
together with copies of the pleadings and documents on file, why a lien ...
should not attach." If the owner doesn't respond, the facts in the
claimant's supporting affidavit are treated as admitted and the lien can
attach.

Deadline to sue to foreclose

Section 9-109 measures this deadline from the original petition, not from
whenever the lien is finally established: "The right to enforce any lien
established under this subtitle expires at the end of one year from the
day on which the petition to establish the lien was first filed." Within
that year, the claimant must file a further petition in the same case to
enforce the lien (or to execute on any bond the owner posted to release the
property), or the right to enforce it is gone.

Homestead/residential extras

Maryland's one residential-specific rule protects owners building their own
home, not the claimant. Section 9-104(a)(2) requires the same 120-day
notice for a "single family dwelling being erected on the owner's land for
his own residence," but adds a condition that doesn't exist for any other
project: the subcontractor also needs "the owner has not made full payment
to the contractor prior to receiving the notice." If the owner already paid
the contractor in full before the notice arrived, there's no lien at all.
Even when the notice is timely, § 9-104(f)(3) caps the subcontractor's lien
at "the amount by which the owner is indebted under the contract at the
time the notice is given" — an owner-payment defense that Maryland doesn't
otherwise extend to commercial or non-owner-occupied residential work.

What trips people up

Because Maryland's lien doesn't exist until a court says so, a claimant who
waits to see how a payment dispute plays out can lose the property to a
sale in the meantime: § 9-102(d) cuts off lien rights entirely once "legal
title has been granted to a bona fide purchaser for value," which can
happen well before a slow-moving petition reaches a hearing. Residential
projects that are pre-sold, or sold while under contract, are a common way
this plays out in practice. Separately, the 120-day subcontractor notice
and the 180-day petition deadline are easy to conflate: notice can be timely
while the petition is still late, or vice versa, because they're two
independent deadlines measured from the same triggering event rather than
one deadline that folds into the other.

Common questions

Does filing my lien claim with the county land records lock in my lien
like it does in other states?
No. Maryland doesn't record a lien at all — you file a Petition to
Establish a Mechanic's Lien in circuit court, and no lien exists until the
court enters an order (final or interlocutory) establishing one.

If I'm a subcontractor and the owner already paid the general contractor
in full, do I still have a lien?
On most projects, yes — Maryland has no general "defense of payment" for
owners. The one exception is a single-family home the owner is having built
for their own residence: there, full payment to the contractor before your
120-day notice arrives defeats your lien entirely (§ 9-104(a)(2)).

What happens if the owner ignores the court's show-cause order?
Under § 9-106(a)(1)-(a)(2), the facts in the claimant's supporting
affidavit are treated as admitted, and the lien can attach without the
owner having contested anything.

Statutes and sources

• Md. Code, Real Prop. § 9-101 (definitions: contract, contractor, owner,
  subcontractor) —
  https://mgaleg.maryland.gov/mgawebsite/Laws/StatuteText?article=grp&section=9-101
  (accessed 2026-07-04)
• Md. Code, Real Prop. § 9-102 (property subject to lien; bona fide
  purchaser cutoff) —
  https://mgaleg.maryland.gov/mgawebsite/Laws/StatuteText?article=grp&section=9-102
  (accessed 2026-07-04)
• Md. Code, Real Prop. § 9-103 (extent of lien; tenant's 25% rule) —
  https://mgaleg.maryland.gov/mgawebsite/Laws/StatuteText?article=grp&section=9-103
  (accessed 2026-07-04)
• Md. Code, Real Prop. § 9-104 (subcontractor notice; residential
  owner-payment defense and lien cap) —
  https://mgaleg.maryland.gov/mgawebsite/Laws/StatuteText?article=grp&section=9-104
  (accessed 2026-07-04)
• Md. Code, Real Prop. § 9-105 (petition to establish lien; 180-day
  deadline) —
  https://mgaleg.maryland.gov/mgawebsite/Laws/StatuteText?article=grp&section=9-105&enactments=False&archived=False
  (accessed 2026-07-04)
• Md. Code, Real Prop. § 9-106 (court review, show-cause order, service on
  owner) —
  https://mgaleg.maryland.gov/mgawebsite/Laws/StatuteText?article=grp&section=9-106
  (accessed 2026-07-04)
• Md. Code, Real Prop. § 9-109 (1-year deadline to enforce the lien) —
  https://mgaleg.maryland.gov/mgawebsite/Laws/StatuteText?article=grp&section=9-109
  (accessed 2026-07-04)