A Florida Notice of Commencement is a legal document that is used to protect the lien rights of a contractor, subcontractor, or material supplier who has provided labor, services, or materials for a construction project in Florida. It is filed with the local county clerk's office in Florida and is effective for one year from the date of filing. There are two types of Florida Notice of Commencement: a general notice of commencement and an amended notice of commencement. A general notice of commencement is used to record the commencement of a construction project and lists the project owner, contractor, and subcontractors involved. An amended notice of commencement is used to update the information contained in the general notice of commencement. This document is used to add or remove persons from the list of parties involved, to add or remove specific lien rights, or to adjust the contract price.