A Checklist outlining the steps for creating, perfecting, and enforcing a mechanic's lien for work performed or materials furnished for the improvement of privately owned residential and commercial real property in the District of Columbia. This Checklist outlines pre-lien notice requirements for property owners and potential lien claimants and includes the requirements for filing a notice of lien and the steps to perfect and enforce a mechanics' lien after filing the notice of lien in Washington, D.C.