No person shall occupy as owner-occupant or permit to be occupied by another, any dwelling or dwelling unit which does not comply with the following requirements:
A. 
Grading and Drainage. The grading and drainage of dwelling premises shall be such that no water shall be allowed to seep into any basement or cellar, or to accumulate or become stagnant therein or on the premises, and no roof, surface or sanitary drainage shall create a structural, safety or health hazard by reason of construction, maintenance or manner of discharge.
B. 
Structural Elements. Every foundation shall adequately support the dwelling structure at all points and shall be free of holes, wide cracks and buckling. Every floor, exterior wall and roof shall be free of holes, wide cracks and loose, warped, protruding or rotting boards or any other condition which might admit moisture or rodents, or which might constitute a hazard to health or safety. All exposed surfaces which have been adversely affected by exposure or other causes shall be repaired and coated, treated or sealed so as to protect them from serious deterioration. Every interior wall and ceiling shall be free of holes and large cracks, loose plaster, defective materials or serious damage. Interior walls and all protective materials thereon shall be properly maintained.
C. 
Windows and Doors. Every window, exterior door and bulkhead shall be reasonably weathertight, watertight and rodent-proof. All exterior doors located on property from which rental income is received shall be required to have a workable lock to be kept in sound working condition.
D. 
Stairways and Porches. Every inside and outside stairway, every porch and every appurtenance thereto shall be constructed and maintained in safe condition and good repair.
E. 
Plumbing Facilities. Every plumbing fixture, water pipe and waste pipe shall be properly installed and maintained in good sanitary working condition, free from defects, leaks and obstructions.
F. 
Infestation. Every occupant of a dwelling containing a single dwelling unit and every occupant of a structure shall be responsible for the extermination of any insects, rodents or other pests therein or on the premises; and every occupant of a dwelling unit, in a dwelling containing more than one dwelling unit, shall be responsible for such extermination whenever his or her dwelling is the only one infected. Notwithstanding the foregoing provisions of this subsection, whenever infestation is caused by failure of the owner to maintain a dwelling in a rodent-proof or reasonable insect-proof condition, extermination shall be the responsibility of the owner. Whenever infestation exists in two or more of the dwelling units in any dwelling, or in the shared or public parts of any dwelling containing two or more dwelling units, extermination thereof shall be the responsibility of the owner.
G. 
Supplied Facilities. Every supplied facility, piece of equipment or utility, which is required under the provisions of this chapter, shall be so designed, constructed and installed according to law that it will function safely and effectively, and shall be maintained in safe and sanitary working condition.
H. 
Accessory Structures. All dwelling premises and accessory structures shall be maintained in good repair and sanitary condition.
I. 
Discontinuance of Utilities. No owner, operator or occupant shall cause any service, facility, equipment or utility, which is required to be supplied by the provisions of this chapter to be removed from or shut off from or discontinued for any occupied dwelling or dwelling unit, except for such temporary interruption as may be necessary when actual repairs or alterations are being expeditiously made, or during other temporary emergencies when discontinuance of service is approved by the director.
(Prior code § 14-71)