In a C Residence District, the following encroachments upon required yard areas are permitted:

A. Cornices, eaves, gutters, chimneys or bay windows projecting not more than 24 inches.

B. One-story open porches and terraces not exceeding three feet in height, projecting not more than four feet into a front or rear yard.

C. One-story enclosed vestibules not greater than six feet wide and five feet into the front yard.

D. In any case where the Board of Appeals has diminished a required yard by a variance, none of the foregoing encroachments shall be permitted into such diminished yard.

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 950 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 100 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 requirements to not less than 850 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 900 square feet, exclusive of garage, car park, carport, open porches or terraces or any other unheated extension 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 feet in height and a finished ceiling width of not less than four feet between opposing rafters.

Such area shall further have knee walls of not less than four feet in height, with subflooring laid within the area to be computed and have access provided from the floor below by means of 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 ground floor area, total not less than nine hundred fifty (950) 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 means of 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.