Mechanic's lien

A mechanic's lien is a security interest in the title to property for the benefit of those who have supplied labor or materials that improve the property. The lien exists for both real property and personal property. In the realm of real property, it is called by various names, including, generically, construction lien. The term "lien" comes from a French root, with a meaning similar to link, which is itself ultimately descended from the Latin ligamen, meaning "bond" and ligare, meaning "to bind". Mechanic's liens on property in the United States date from the 18th century.