Every person or firm that has furnished work or provided material to build or improve your property is entitled to a mechanic's lien on the property. A mechanics lien is a legal tool that provides the unpaid party with a security interest in the property.(b) "Lien" means an encumbrance on property as security for the payment of debt. "Lien" does not include a nonconsensual common law lien. Subdivision 1. Lien. (a) Any amount due under this chapter or section 116L. This guide will walk you through the steps in filing a Minnesota mechanics lien, from protecting your lien rights to enforcing your lien before it expires. A "lien" is a security interest or right that a creditor has in another person's property. In Minnesota, a property lien can be used to collect a court judgment. Here's how it works.