23.60A.486

A. Maximum height. The maximum height is 35 feet, except as provided in subsections 23.60A.486.B through 23.60A.486.D. B. Height exceptions 1. Cranes, mobile conveyers, light standards, and similar equipment necessary for the function of water-dependent uses or the servicing of vessels may extend above the maximum height limit; 2. The Director may authorize up to 55 feet in the Ballard/Interbay Northend Manufacturing and Industrial Center and up to 80 feet for buildings and other structures in the Duwamish Manufacturing/Industrial Center for the following structures: a. Structures for water-dependent and water-related uses, for uses accessory to a water-dependent or water-related uses, and for manufacturing if: 1) The structure requires additional height because of its intended use; and 2) The views from a substantial number of upland residences would not be substantially blocked by the increased height; b. An accessory structure to a water-dependent or water-related use if: 1) Allowing the additional height would result in a significant amount of additional usable area for the principal water-dependent or water-related use and/or additional area for ecological restoration and enhancement; and 2) No more than 20 percent of the site area is covered by portions of the structure that exceed the maximum height established in Section 23.60A.486 ; and 3) Eighty percent of the site is preserved through a covenant for water-dependent and/or water-related uses if uses that are not water-dependent or water-related occupy the structure; and 4) The views from a substantial number of upland residences would not be substantially blocked by the increased height; and 5) Permits issued pursuant to this subsection 23.60A.486.B shall identify the specific uses and gross floor areas of each use on the site. C. Rooftop features 1. Radio and television receiving antennas, flagpoles, chimneys, smokestacks, and religious symbols for religious institutions are exempt from height controls, provided: a. The feature is no closer to any adjoining lot line than 50 percent of its height above existing grade; or b. If attached to the roof, the feature is no closer to any adjoining lot line than 50 percent of its height above the roof portion where attached. c. The width of the feature does not obstruct the view of the shoreline from a substantial number of residences within or adjoining the Shoreline District. 2. Clerestories, communication and accessory communication devices, firewalls, green roofs, greenhouses, monitors, open railings, parapets, planters, skylights and solar collectors may extend 4 feet above the maximum height limit under subsection 23.60A.486.A and 23.60A.486.B where allowed in the underlying zone, except where the width of such features obstructs the view of the shoreline from a substantial number of residences within or adjoining the Shoreline District, in which case the Director may reduce the height allowed. 3. Stair and elevator penthouses and mechanical equipment may extend 10 feet above the maximum height if: a. The combined total coverage of all features does not exceed 20 percent of the roof area or 25 percent of the roof area if the total includes screened mechanical equipment; b. Allowed in the underlying zone or special district; and c. The width of such features does not obstruct the view of the shoreline from a substantial number of residences within or adjoining the Shoreline District, in which case the Director may reduce the height allowed. 4. Structures may extend 18 inches above the maximum height limit, including exceptions, if the roof insulation exceeds the energy code requirements in effect when the structure is constructed. D. Bridges. Bridges may exceed the maximum height limit. (Ord. 124750 , § 49, 2015; Ord. 124105 , § 3, 2013.)