A. In case of a one-and-one-half-story (expansion attic area) dwelling, no such dwelling shall be hereafter erected unless the ground floor area contains not less than one thousand one hundred fifty (1,150) square feet, exclusive of garage, car park, carport, open porches or terraces or any other unheated extensions outside the body of the house; provided, however, that a maximum of one hundred fifty (150) square feet of expansion attic area, as hereinafter described, may be used and applied to the area requirements of the ground floor, diminishing said ground floor area to not less than one thousand (1,000) square feet.

B. In case of a one-story dwelling not capable of qualifying for expansion attic area, as hereinafter described, no such dwelling shall be hereafter erected unless the ground floor area contains not less than one thousand one hundred (1,100) square feet, exclusive of garage, car park, carport, open porches or terraces or any other unheated extensions outside the body of the house.

C. To qualify as expansion attic area, such area shall have or be capable of having a finished ceiling height of not less than seven (7) feet and a finished ceiling width of not less than four (4) feet between opposing rafters. Such area shall further have knee walls of not less than four (4) feet in height, with subflooring laid within the area to be computed and shall have access provided from the floor below by a permanent built-in stairway. The expansion attic area shall not be required to be finished except as provided herein.

D. In case of a split-level dwelling, any two (2) finished, decorated and heated levels may be combined to qualify for minimum ground floor area requirements; provided, however, that all remaining levels are finished, decorated and heated and are of sufficient square footage to, when combined with the ground floor area, total not less than one thousand one hundred fifty (1,150) square feet.

E. In case of a two-story dwelling. the ground floor area shall contain not less than six hundred sixty (660) square feet, exclusive of garage. car park, carport, open porches or terraces or any other unheated extensions outside the body of the house, provided, however, that the second story area shall contain not less than seventy-five percent (75%) of the ground floor area, with an unobstructed ceiling height of not less than eight (8) feet and access provided from the floor below by a permanent, built-in stairway. The second story area shall be finished, decorated and heated for the purpose of qualifying under this section.

F. For the purpose of this section, "ground floor area" is defined as the area contained within the exterior dimensions of the ground floor.