(A) No principal building shall have any front, side, or rear setback distance less than that shown on the schedule of regulations provided in this Code as being required in the district in which the building is located. Unroofed steps and ramps shall not be considered as a part of the principal building when measuring the setback distance of such building.
(B) Corner lots. In the case of lots abutting on more than one street, the property line fronting the street which serves as the primary entrance and identity for the lot shall be deemed the front for purposes of setback requirements.