How to File a Mechanics Lien in Maryland
Step 1 — Confirm you have lien rights in Maryland
Maryland's recorded rules cover general contractors, subcontractors and suppliers (Md. Code Real Prop. § 9-102). Each of those roles has its own filing window — see Step 3. Maryland rule detail: File mechanics lien petition (which initiates a court proceeding) within 180 days of last furnishing. In Maryland, the lien filing IS the lawsuit filed in Circuit Court.
Step 2 — Send the Maryland preliminary notice
Maryland requires a preliminary notice 120 days (sub), notice of intent (Md. Code Real Prop. § 9-106). It is a precondition, not a formality. It must reach Circuit Court (Clerk) and Contractor (prime) only - NOT the surety and Prime Contractor. Delivery: Certified Mail, to the contractor at its residence or any place at which it has a business, Certified Mail, Return Receipt Requested. Maryland rule detail: File mechanics lien petition within 180 days of last furnishing. No preliminary notice required. Lien petition filed in Circuit Court where property is located.
Step 3 — Your Maryland filing deadline
Maryland sets the window by claimant role: • General contractors: within 180 days of your last day of work or materials. • Subcontractors and suppliers: within 180 days of your last day of work or materials. The clock runs from last date of furnishing — not your invoice date. Punch-list and warranty callbacks generally do not restart it. Maryland rule detail: After lien petition filed, must bring lawsuit to enforce within 1 year. Note: filing petition already initiates the action in Maryland's system.
Step 4 — Prepare and record the lien in Maryland
Record in the county where the property sits, under Md. Code, State Fin. & Proc. § 17-108(b). The document must identify the property, the owner of record, the amount actually owed, and what you furnished. Overstating the amount can void the claim outright. Maryland rule detail: Applies to a supplier (labor or materials, including an equipment lessor to the extent of fair rental value, 17-101) that has a direct contract with a SUBCONTRACTOR OR SUB-SUBCONTRACTOR but not with the contractor. Written notice to THE CONTRACTOR within 90 days after the claimant last supplied the labor or materials, stating with substantial accuracy the amount claimed and the person for whom the work was done or to whom the materials were supplied, sent by CERTIFIED MAIL to the contractor's residence or place of business (17-108(b)). The surety is NOT a statutory recipient. First-tier subs with a direct contract with the prime give no notice but may not sue until 90 days after last supplying without full payment (17-108(a)). Payment security of at least 50% of the contract is required on construction contracts above the 13-109 small-procurement amount (17-103).
Step 5 — Serve the recorded Maryland lien
Maryland requires service on Circuit Court (Clerk) and Contractor (prime) only - NOT the surety and Prime Contractor. Use Certified Mail, to the contractor at its residence or any place at which it has a business or Certified Mail, Return Receipt Requested and keep the receipt. In many states an unserved lien is unenforceable even though it appears on title. Maryland rule detail: An action on the payment bond shall be filed within 1 YEAR AFTER THE PUBLIC BODY FINALLY ACCEPTS THE WORK performed under the contract (17-109(b)) - an event on the public body's calendar, NOT the claimant's last furnishing. Confirm the final-acceptance date in writing with the agency. Venue under 17-109(a): county where the contract was executed and performed, or where the contractor has its principal place of business. No suit before 90 days after last supplying (17-108(a)).
Step 6 — Enforce before the Maryland deadline expires
You must sue to foreclose within 1 year (filing) (Md. Code, State Fin. & Proc. § 17-109(b)). Miss it and the lien expires and title clears, leaving only a contract claim. Maryland rule detail: Second-tier claimants only. No notice = no bond claim.
Retainage rules that affect your Maryland claim
Maryland treats retainage on its own schedule (Md. Code Real Prop. § 9-304), so money still held back may have a different due date than your progress billings. Maryland rule detail: File no sooner than 90 days AND no later than 1 year.
Other Maryland requirements that void liens
• Prime must pay sub within 7 days of receiving payment from owner (Maryland Prompt Payment Act). Interest at 1.5%/month on amounts wrongfully withheld. • Retainage released within 30 days of substantial completion. 10% maximum retainage.
Frequently Asked Questions
How long do I have to file a mechanics lien in Maryland?
Maryland requires the lien to be recorded within 180 days, measured from last date of furnishing. The exact window depends on your role — general contractors: within 180 days of your last day of work or materials.
Do I need to send a preliminary notice before filing in Maryland?
Yes. Maryland requires a preliminary notice 120 days (sub) (notice of intent). Failing to send it on time generally forfeits your lien rights entirely, regardless of how much you are owed.
Where do I file a mechanics lien in Maryland?
File with the county recorder's office in the county where the property is located. Filing in the wrong county does not preserve your deadline, and re-filing in the correct county after the deadline will not save the claim.
What happens if I miss the Maryland filing deadline?
Your lien rights are extinguished. Maryland courts do not grant extensions for missed mechanics lien deadlines. You would be left with a breach-of-contract claim against whoever hired you, which carries no security interest in the property and is far harder to collect.
How long does a mechanics lien last in Maryland?
Once recorded, you must file suit to enforce within 1 year (filing). If you do not, the lien expires automatically and no longer clouds the property's title.