Maryland Mechanic Lien Law: Complete Guide
Your Complete Guide to Mechanic's Lien Rights Under MD Code Real Property Article §9-104, 105 et seq. — Private Works, Payment Bonds & Public Projects
Maryland mechanic lien deadline table with toggles for project type and claimant type.
Maryland Preliminary Notice & Mechanic Lien Deadlines
Select your project type and role to see the deadlines that apply to you.
Prime Contractor — In privity with the property owner
File a Petition to Establish Mechanic's Lien in Circuit Court within 180 days after last furnishing labor or materials.
Maryland has no separate county recording step; the Petition is the lien-establishing action.
The petition must include all material papers supporting the claim.
The mechanic lien amount must be 15% or more of the total project or new improvement value.
The Petition to Establish Mechanic's Lien is itself the enforcement action. After a show-cause hearing, the Circuit Court determines whether to establish the lien against the property and orders further relief within the same proceeding.
Preliminary Notice
Mechanic Lien
File a Petition to Establish Mechanic's Lien in Circuit Court within 180 days after last furnishing labor or materials.
Maryland has no separate county recording step; the Petition is the lien-establishing action.
The petition must include all material papers supporting the claim.
The mechanic lien amount must be 15% or more of the total project or new improvement value.
Enforcement
The Petition to Establish Mechanic's Lien is itself the enforcement action. After a show-cause hearing, the Circuit Court determines whether to establish the lien against the property and orders further relief within the same proceeding.
Maryland Mechanic Lien Law Overview
Maryland construction mechanic lien rights are governed by the Maryland Code, Real Property Article §9-104, 105 et seq. This statutory framework protects the payment rights of contractors, subcontractors, materialmen, and laborers who furnish labor, services, or materials for the improvement of real property in the State of Maryland. Notably, Maryland requires that the mechanic lien amount must be 15% or more of the total project or new improvement to be valid. §9-102.
Maryland's mechanic lien law distinguishes between contractors and subcontractors in its notice requirements. Contractors in direct privity with the owner have no preliminary notice obligations — they may proceed directly to filing suit. Subcontractors (defined as any party with a contract with a party other than the owner) must serve a Notice to Owner of Intention to Claim a Mechanic Lien within 120 days of last performance, sent by certified mail. §9-104. On single-family residential projects where the owner is constructing their own residence, any notice given after the owner has made payment is ineffective to the extent of payments made before the notice.
Unlike many states, Maryland does not require a separate mechanic lien recording step. Instead, the mechanic's lien is established and enforced through a Petition to Establish and Enforce a Mechanic's Lien, which must be filed within 180 days of the claimant's last performance of work. For subcontractors, a copy of the Notice to Owner must be attached to the petition. Contractors must include 'all material papers' with the filing.
Maryland also provides payment bond protections on public projects for contracts over $100,000, with a 90-day notice requirement and suit within 1 year from final acceptance. National Lien & Bond provides authoritative guidance on every aspect of Maryland construction mechanic lien compliance, from notice requirements through bond claims and mechanic lien enforcement proceedings.
Topics on This Page
Maryland Mechanic Lien Law: Key Topics
Navigate the critical compliance areas for Maryland construction mechanic lien law.
Notice Requirements
Subcontractor Notice to Owner obligations, single-family residential notice rules, and public works bond claim notice requirements under Maryland law
Mechanic Lien Deadlines
120-day Notice to Owner deadline, 15% threshold requirement, and mechanic lien petition filing procedures
Mechanic Lien Enforcement Deadlines
180-day suit deadline, public works bond claim suit within 1 year, and enforcement procedures
Frequently Asked Questions
What statute governs mechanic's liens in Maryland?
Private works mechanic's lien rights are governed by MD Code Real Property Article §9-104, 105 et seq. Public works payment bond claims fall under §17-108. Maryland requires that the mechanic lien amount be 15% or more of the total project or new improvement. §9-102.
What is the 15% threshold for Maryland mechanic's liens?
Maryland law requires that the amount claimed must be 15% or more of the total project value or value of the new improvement to file a mechanic's lien. §9-102. Claims below this threshold cannot support a mechanic's lien.
What is the Notice to Owner deadline in Maryland?
Subcontractors must serve a Notice to Owner of Intention to Claim a Mechanic Lien within 120 days of last performance by certified mail. §9-104. Contractors are not required to serve any notice.
How long do I have to file a mechanic's lien suit in Maryland?
The Petition to Establish and Enforce a Mechanic's Lien must be filed within 180 days of last performance. This single filing establishes the mechanic lien and initiates enforcement in one step.
What are the public works bond claim deadlines in Maryland?
Notice of claim to the principal contractor is required within 90 days of last performance (for claimants contracting with a subcontractor). Suit must be filed within 1 year of final acceptance of the project, but not earlier than 90 days after last work.
Can I file a mechanic lien on a public project in Maryland?
No. Mechanic's liens cannot be filed against public property in Maryland. Payment rights on public projects are secured through payment bond claims for contracts over $100,000. Contracts between $25,000 and $100,000 may also have bond requirements.