The owner, lessee, occupant or person in charge of any building or structure, located within the City, which has been subjected to an involuntary or uncontrolled fire, is hereby charged with the duty of cleaning up such building or structure, together with the immediate premises upon which it is located, so as to remove all waste and debris caused by the fire, to safeguard against and/or remove any hazardous conditions resulting from the fire and to correct and eliminate all unsightly conditions and conditions which present hazards of additional fires or menaces to health. If the premises are not to be immediately restored and rehabilitated for occupancy, necessary steps shall be taken to remove and prevent the occurrence of conditions creating hazards to safety, health and recurring fires.
(1966 Code §1505.01)