The amount of expense so levied shall be a lien upon such premises from the time of the commencement of the work by the City. Such date shall be fixed by the Director of Public Works and filed with the City Clerk, and may be collected by action at law or a lien may be filed and proceeded in according to law. Nothing in this section shall preclude the Director of the Department of Public Works or his/her designee from seeking recover of expenses incurred to construct, pave, curb, repave, recurb, restore to good repair or remove hazardous condition as restitution through enforcement of this Part as provided for in § 508-516.