(A) Allowed projections. The structures listed in Table 25.07-B, Allowed Projections Above Height Limits, may exceed the maximum permitted building height in the RD zone, subject to the limitations stated and further provided that no portion of a structure more than the building height limit may contain habitable area. Additional height above the limits of Table 25.07-B may be approved with a conditional use permit, pursuant to the provisions of § 25.02.003.
Table 25.07-B
Allowed Projections Above Height Limits
Structures Allowed Above the Height Limit | Maximum Vertical Projection Above the Height Limit | Maximum Coverage and Locational Limitation |
Structures Allowed Above the Height Limit | Maximum Vertical Projection Above the Height Limit | Maximum Coverage and Locational Limitation |
Barns | 10 feet | None. |
Skylights | 1 foot | None. |
Chimneys | 8 feet | None. |
Decorative features including spires, bell towers, cupolas, etc. Rooftop open space features including sun decks, sunshade and windscreens, trellises, and landscaping | 10 feet | Limited to a total of 20% of roof area, inclusive of all structures. Must be set back from the exterior wall one foot for every foot of projection above the height limit. |
Elevator and stair towers (for multi-unit residential and non-residential buildings only) | 16 feet | Limited to a total of 10% of roof area. Must be set back from the exterior wall one foot for every foot of projection above the height limit. |
Mechanical equipment | 5 feet | Must be set back from the exterior wall one foot for every foot of projection above the height limit and screed from view from adjacent at-grade public streets. |
Fire escapes, catwalks, and open railings required by law | No restriction | None. |
Telecommunications facilities, antennas, microwave equipment, and radio towers | Subject to the provisions of Chapter 7.11 of the County Code, Wireless Communication Facilities Standards. | |
(B) Exempt structures.
(1) The following structures are exempt from limits on projections above height limits in all zones except R-1 and RM: windmills, barns, silos, grain elevators, oil derricks, mechanical devices, radio, communication and television antenna, spires and bell towers, and other similar structures.
(2) In the R-1 and RM zones, these structures may exceed the height limit for the zone with an administrative use permit.
(Ord. 1043 § 3 (part), 2022)