Except as hereinafter provided, no building structure or premises shall be used or constructed so as to produce greater heights, smaller square footage requirements, smaller yards or less unoccupied area and no building shall be occupied by more families than hereinafter allowed for such building for the district in which it is located. No lot which is now or may be hereafter improved as herein required shall be so reduced in area, that the yards and open spaced provided about any building as shown on the plat thereof, accompanying the application for a building permit for the purpose of complying with the provisions hereof, shall again be used as a yard, court or other open space for another building. (Ord. 2819. Passed 11-29-95.)