(a) All dwelling structures and all parts thereof, excluding interiors of owner occupied dwellings, shall be maintained in good repair and shall be capable of performing the function for which such structure or part or any feature thereof was designed or intended to be used.
(b) All equipment and facilities appurtenant to a dwelling structure or dwelling unit shall be maintained in good and safe working order.
(c) The interiors of other than owner-occupied dwellings, and any dwellings that are or have been vacant and unoccupied for a period of sixty days or more shall be capable of performing the function for which such structure or part or any feature thereof was designed or intended to be used.
(d) Interior inspections shall be performed so that all minimum standards are complied with and in addition the following specific conditions shall be met:
(1) All interior walls and floors of every dwelling structure shall be maintained free of holes, large cracks, any loose or deteriorated materials and any evidence of vandalism.
(2) All floors within every bathroom or water closet compartment of a dwelling structure shall be maintained water resistant.
(3) All electrical, plumbing, heating, air conditioning, walls, floors, ceilings, windows and doors shall be maintained in good repair and capable of performing the functions for which they were designed or intended to be used.