A Florida Notice of Contest of Lien is a document filed with the local county clerk's office that is used to contest the validity of a lien on a property. This document alerts the lien holder that the lien holder is being challenged and a hearing will be held to determine the validity of the lien. There are two types of Florida Notice of Contest of Lien: the Notice of Contest of Mechanic's Lien and the Notice of Contest of Tax Lien. The Notice of Contest of Mechanic's Lien is used to contest a lien placed on a property due to unpaid labor or material costs associated with improvements to the property. The Notice of Contest of Tax Lien is used to contest a lien placed on a property due to unpaid taxes. Both types of Notice of Contest of Lien must be filed with the local county clerk's office and served to the lien holder in order to initiate the lien contest process.