3-1.2 Responsibility. The owner of the premises shall have the ultimate responsibility to maintain the structures and exterior property in compliance with these requirements, except as otherwise provided for in this code. A person shall not occupy as owner-occupant or permit another person to occupy premises which are not in a sanitary and safe condition and which do not comply with the requirements of this chapter. Occupants of a dwelling unit, rooming unit or housekeeping unit are responsible for keeping in a clean, sanitary and safe condition that part of the dwelling unit, rooming unit, housekeeping unit or premises which they occupy and control.
3-1.3 Vacant structures and land. All vacant structures and premises thereof or vacant land shall be maintained in a clean, safe secure and sanitary condition as provided herein so as not to cause a blighting problem or adversely affect the public health or safety. Structures remaining vacant for more than 90 days are required to be registered in accordance with Article 1730 Vacant Building Registration Program of the City Ordinances.
3-2.1 Sanitation. All exterior property and premises shall be maintained in a clean, safe and sanitary condition. The occupant shall keep that part of the exterior property which such occupant occupies or controls in a clean and sanitary condition.