Principal Buildings. The maximum building height shall be the lower elevation of 3 stories and 36 feet or 410 feet elevation above mean sea level, including a parapet for the East Palisades Overlay Area, or 425 feet elevation above mean sea level, including a parapet for the B-3 Zone District Overlay Area, or 390 feet elevation above mean sea level, including a parapet for the Hudson Terrace Overlay Area.