A. 
Buildings and parts thereof shall be maintained so as to be capable of sustaining safely their own weight and the loads to which they may be subject.
B. 
Buildings shall be maintained so that loads are transmitted to the soil without undue differential settlement, unsafe deformation or movement of the building or any structural part.
C. 
Buildings shall be maintained so that protection is provided for all structural members which may become structurally unsound if left unprotected. Causes of such deterioration include, among others, action of freezing and thawing, dampness, corrosion, wetting and drying and termites or other destructive insects.
D. 
Buildings built in soil which is water bearing at any season of the year shall be maintained so that ground and surface water will not penetrate into habitable spaces, basements and cellars.
A. 
The foundation walls of every structure used for human habitation shall be maintained in good repair and be structurally sound.
B. 
Foundation walls shall be considered in good repair and structurally sound if found free from damage or defects and capable of bearing imposed loads.
A. 
The stairs, porches and railings affixed to the exterior of every structure used for human habitation shall be kept in good repair and structurally sound. Railings shall be provided for stairs and balconies and, where necessary, for porches and accessible roofs.
B. 
Stairs and porches shall be considered to be in good repair and structurally sound when found to be free of holes and cracks and capable of supporting imposed loads. Properly balustraded railings shall be provided when there is clear danger of accident or personal injury and must be capable of bearing normally imposed loads.
A. 
Every structure used for human habitation shall be so maintained that it will be weather- and watertight.
B. 
Exterior walls, roofs and all openings around doors, windows, chimneys and all other parts of the structure shall be so maintained as to keep water from entering the structure and to prevent undue heat loss. Damaged materials must be repaired or replaced. All parts of the structure that show evidence of dry rot or other deterioration shall be repaired or replaced and refinished. Such replacement, wherever practical, shall be in conformity with the remainder of the structure.
A. 
All exterior wood surfaces of a structure used for human habitation that are not of a species inherently resistant to decay shall be treated, when necessary, with a protective coating or other preservative coatings, when necessary.
B. 
Exterior wood surfaces shall be adequately protected against deterioration through the application of approved protective coatings when necessary.
A. 
Every structure used for human habitation shall be free of loose overhanging objects.
B. 
Exterior walls, roofs and all other parts of the structure shall be free from loose and unsecured objects and materials. Such objects or materials shall be removed, repaired or replaced.
A. 
Cellars, basements and crawl spaces in every structure used for human habitation shall be reasonably free from dampness to prevent conditions conducive to decay or deterioration of the structure.
B. 
Ventilation shall be provided in every basement, cellar and crawl space by means of windows, openings or vents or mechanical vents.
A. 
Supporting structural members of every structure used for human habitation shall be structurally sound.
B. 
Supporting structural members shall be considered to be structurally sound if such members are capable of bearing imposed loads safely and if there is no evidence of deterioration.
A. 
Chimneys and all flue and vent attachments thereto, and all other flues and vents of every structure used for human habitation, shall be structurally sound and free from defects, to assure the performance of the function for which they were designed and are used.
B. 
Chimneys, flues, gas vents or other draft-producing equipment shall provide sufficient draft to develop the rated output of the connected equipment. Chimneys, flue linings, where required, flues, gas vents and their supports shall be structurally safe, durable, smoke-tight and capable of withstanding the action of the flue gases.
A. 
Interior stairs of every structure used for human habitation shall be structurally sound and free from defects. Railings shall be provided for stairs, balconies, landings and stairwells.
B. 
Treads or risers that evidence excessive wear or are broken, warped or loose shall be repaired. Stairs shall be securely fastened to supporting structural members and be capable of supporting normally imposed loads. Properly balustraded railings capable of bearing normally imposed loads shall be placed on the open portions of stairs, balconies, landings and stairwells. (For multiple dwellings, see also Multiple Residence Law.)
A. 
Floors, walls and ceilings of every structure used for human habitation shall be structurally sound and maintained in a clean and sanitary condition.
B. 
Floors shall be considered to be structurally sound where capable of safely bearing imposed loads. Walls and ceilings shall be considered to be structurally sound and in good repair when clean, free from breaks, loose plaster and similar conditions.
C. 
Toilet room and bathroom floors shall be maintained so as to prevent leakage of water through the floor, under normal conditions of use and floor washing, and thus prevent the resultant deterioration or defects in structural members and ceilings below.
It shall be prohibited:
A. 
To accumulate or store on residential premises, except in approved locations, any highly flammable or explosive matter, such as paints, volatile oils, cleaning fluids and similar materials, or any combustible refuse, such as wastepaper, boxes, rags or similar materials; and
B. 
To accumulate or store materials on fire escapes or stairs, in stairways or passageways, at doors or windows or under public stairs or in any other location where in the event of fire such materials may obstruct egress of occupants or interfere with fire-fighting operations.
A. 
Walls and ceilings shall be maintained free from cracks and openings which would permit flame or excessive heat to enter the concealed space.
B. 
In buildings of mixed occupancy, nonresidential space shall be separated from residential space by approved fire separations which will retard the spread of fire in accordance with generally accepted standards. (See § 231-10, Definitions and word usage.)
C. 
Garages in or attached to a residential building shall be separated from other spaces in the building by approved fire separations which will retard the spread of fire and prevent flammable or toxic vapors originating within the garage from being transmitted to other parts of the building in accordance with generally accepted standards. (See § 231-10, Definitions and word usage.)
Interior finish materials for acoustical correction, surface insulation and decorative treatment on the surfaces of walls and ceilings and interior trim shall be of materials that will not, in burning, give off excessive amounts of smoke or toxic gases.
A. 
Fireplaces and similar construction used or intended to be used for burning fuel in open fires shall be connected to approved chimneys and shall be installed so that nearby or adjacent combustible material and structural members shall not be heated to unsafe temperatures.
B. 
Hearths and linings or other parts of fireplace exposed directly to flame shall be of materials that will not melt, disintegrate, spall or shatter at high temperatures.
C. 
Wood mantels and trim on fireplaces shall be placed and attached so that they cannot be heated to unsafe temperatures or ignited by sparks or embers from the fire.