State Information | Minnesota | National Lien Services

This is an overview of the state’s statutory approach to lien law and what contractors might want to focus on to ensure lien rights are established timely, correctly, and effectively.

While we are happy to provide this guide as a quick reference, we highly encourage that you work with a construction attorney to help you with your particular circumstances in our complex construction lien law environment.

Minnesota Quick Overview

Pursuant code	Minnesota Statutes §§ 514.01 et seq.
Prelien required for private / commercial projects	Yes
Prelien required for public projects	No
MN statutory relief	Unpaid balance
Lien milestone event	Last furnishing/last invoice
Lien enforcement deadline	6 months to 1 year
Waivable lien rights	No
Supplier to supplier rights	Conditional, check statutes
Prelien document name(s)
Prelien minimum information	Legal description of the property, name and address of the claimant and contracting party, description of services or materials, and statutory warning.
Prelien minimum notifications	Owner, and for subcontractors and suppliers, also to the prime contractor or the party with whom they contracted
Prelien recording requirement	No
Prelien notarized	No

Understanding the Prelien Process on Construction Projects in Minnesota by Role

Minnesota requires a preliminary (pre-lien) notice for subcontractors and suppliers on residential and certain small commercial projects. Timing and format requirements are strict, especially for lower-tier parties.

Prime/ Original / General Contractors (GCs): Private/Commercial: Prime contractors should include the statutory warning language where required and track project type triggers.

Subcontractors/Trade Partners (Subs): Private/Commercial: Subcontractors generally must serve prelien notice in required form and within statutory timelines.

Second-tier Subcontractors: Private/Commercial: Second-tier subs should verify both owner and upstream notice obligations on qualifying projects.

Lower-tier Subcontractors: Private/Commercial: Lower-tier parties should strictly follow timing and content requirements for valid notice.

Material Suppliers: Private/Commercial: Suppliers generally should serve prelien notice promptly, especially on residential/smaller commercial work.

Equipment Lessors: Private/Commercial: Lessors should evaluate statutory coverage and serve notice where required to preserve claim rights.

Second-tier Material Suppliers: Private/Commercial: Second-tier suppliers should confirm recipient parties and project classification early.

Possible Exceptions, Special Circumstances, and Caveats in Minnesota

Owner occupied residential: Notice is required if the project is for an owner-occupied dwelling.

Residential: Residential projects of fewer than 5,000 square feet or owner-occupied dwellings trigger special preliminary notice requirements.

Mechanic's Liens in Minnesota

In Minnesota, a mechanics lien must be filed and served on the property owner (and owner's agent) within 120 days after the claimant last furnished labor, skill, or materials for a project. To enforce the lien, the claimant must initiate a foreclosure action within 1 year of last furnishing labor or materials. Pre-lien notice requirements apply to non-commercial and certain smaller commercial projects (5,000 square feet or less), and must be included in the written contract or separately served shortly after work begins.

Bond Claims in Minnesota

On public projects in Minnesota, claimants seeking recovery under a payment bond must comply with the specific notice and filing requirements outlined by the project's bond terms and Minnesota Statutes, often requiring a formal notice of claim to be given to the surety and/or contracting authority within a defined timeframe after last furnishing labor or materials. Enforcement actions must be filed within a strict statutory period following completion or final furnishing.

Construction Lien Waivers in Minnesota

Required format: Minnesota does not require any specific statutorily required verbiage to be valid but be sure to check with your constuction attorney and consult any relevant state statutes.

Required notarization: Minnesota does not require waivers to be notarized.

Minnesota statutes are silent on statutory lien waivers. Parties are free to negotiate the terms of lien waivers contractually. However, waivers must not be coerced as a condition of payment unless specifically agreed upon.

Learn more about waivers here, including the when and how to use various types of waivers, the difference between a Lien Waiver and a Lien Release, what to look for before signing, and more.

As a client, you'll have free access to our system that easily creates statutorily correct lien waivers.
Through our technology partner Prelien Pro, you can also access best-in-class lien waiver management software, allowing you to easily track, collaborate, and share lien waivers with all your trade partners.

Assessors’ websites in Minnesota counties

Most often, the county Assessor’s office is the go-to resource for online lien-related information for construction project parcels—ownership records, special warranty deeds, and more. Counties that we’ve not yet found online (those with “*”) link to a Google search for your convenience.

Frequently asked questions (FAQs) on Minnesota lien processes for contractors

Is a preliminary notice required to preserve lien rights in Minnesota?

Yes. A pre-lien notice is generally required for residential and smaller commercial projects (5,000 sq. ft. or less), and must either be part of the written contract or separately served within 10 days of agreement or 45 days after first furnishing, depending on the contractor's role.

How long do I have to file a mechanics lien in Minnesota?

A mechanics lien must be filed and served within 120 days of the last date of furnishing labor, skill, or materials to the project.

Can I file a lien without a written contract in Minnesota?

Yes, but if there is no written contract, the pre-lien notice must be separately served within 10 days of the work agreement if applicable, and you must still follow the filing and service deadlines.

What happens if I miss the 120-day filing deadline for a Minnesota lien?

If the lien is not filed and served within 120 days of last furnishing, lien rights are forfeited, and no mechanics lien can be claimed.

How long do I have to enforce a lien once it is filed in Minnesota?

You must file an action to foreclose the lien within 1 year of the last date labor or materials were furnished to the project, or the lien will expire.

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Our Guide to Preliens, Waivers, Mechanic’s Liens, and Bond Claims in Minnesota