100 square feet of additional habitable area for each of the next three (3) occupants; and at least 75 square feet of additional habitable floor area for each additional occupant. In every dwelling unit and in every rooming unit, every room occupied for sleeping purposes by one (1) occupant shall contain at least 70 square feet of floor area, and every room occupied for sleeping purposes by more than one (1) occupant shall contain at least 50 square feet of floor area for each occupant 12 years of age and over and at least 35 square feet of floor area for each occupant under 12 years of age. (2) Ceiling Height. Every habitable room in every dwelling unit shall be at least seven (7) feet wide in any part with at least one half (½) the floor area having a ceiling height of seven (7) feet. That portion of the room which is less than five (5) feet shall not be considered as part of the habitable floor area. (3) Floor Area Calculation. Floor area shall be calculated on the basis of habitable room area. However, closet area and wall area within the dwelling unit may count for not more than 10 percent (10%) of the required habitable floor area. The floor area of any part of any room where the ceiling height is less than five (5) feet shall not be considered as part of the floor area computing the total area of the room to determine maximum permissible occupancy.
(4)
Cellar. No cellar shall be used for living purposes.
(5) Basement. No basement shall be used for living purposes unless:
A. Water-Tight . The floor and walls are substantially water-tight;
B. Window & Ceiling Height . The total window area, total openable window area, and ceiling height are equal to those required for a habitable room;
C. Window Area . The required minimum window area of every habitable room is entirely above the grade adjoining such window area, except where the windows face a stairwell, window well, or access way.
h. Minimum Standards for Safe & Sanitary Maintenance
(1) Exterior Foundation, Walls, & Roofs. Every foundation wall, exterior wall, and exterior roof shall be substantially weather-tight and rodent proof; shall be kept in sound condition and good repair; shall be capable of affording privacy; shall be safe to use and capable of supporting the load which normal use may cause to be placed thereon. Every exterior wall shall be protected with paint or other protective covering to prevent the entrance or penetration of moisture or the weather.
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