Every building hereafter erected or structurally altered shall be located on a lot as defined herein and in no case shall there be more than one principal building on one lot; provided that, more than one industrial, commercial, multi-family dwelling or institutional building may be erected upon a single lot or tract in a district permitting these uses, but the yards and open spaces required around the boundaries of the lot or tract shall not be encroached upon by any buildings, nor shall there be any change in the intensity of use regulations.
(Ord. passed - -2010)