The height, yard and area regulations set forth in Chapter 1147 shall be observed; provided that a part of the shopping center containing a ground floor area of not more than 10,000 square feet may be erected to a height of six stories or ninety feet when located not less than 150 feet from all property lines, and when specifically approved as to arrangement and design, as specified hereinafter, and provided further that the aggregate ground area occupied by buildings shall not exceed twenty-five percent (25%) of the total area of the shopping center site.
(1980 Code 153.77)