On any existing street frontage in Class A Districts where there is no building or setback line designated on the Building Zone Map, the location of the setback line shall be as follows:
(a) No nearer than thirty feet to the street line or twenty-five percent of the average or normal depth of the lots having their front lines along the street frontage, whichever is the greater. (As per Exhibits 1, 2, and 3.)
(b) On the sideline of a corner lot the distance of the setback line from the street line shall be not less than ten feet. (As per Exhibits 1, 2, and 3.)
(Ord. 1953-29. Passed 6-1-53; Ord. 2003-6. Passed 2-10-03.)