A Washington Partial Release of Lien is a document used to release part of a lien that has been placed on a property in Washington. This document is filed with the county office in which the property is located. There are two types of Washington Partial Release of Liens: Partial Release of Mechanics Lien and Partial Release of Construction Lien. A Partial Release of Mechanics Lien is used when a general contractor or subcontractor has placed a lien on a property for labor or materials provided. A Partial Release of Construction Lien is used when a contractor or subcontractor has placed a lien on a property for a specific construction project. This document must be signed by the lien claimant, or the party who placed the lien, and by the lien holder, or the party on whose property the lien was placed.