A.
Uses and structures authorized. Accessory uses and structures are allowed only in connection with lawfully established principal uses and principal structures. Allowed accessory uses and structures are limited to those expressly identified in this chapter as well as those that, in the determination of the Zoning Officer, satisfy all of the following criteria:
(1)
They are customarily found in conjunction with the subject principal use and structure;
(2)
They are subordinate and clearly incidental to the principal use of the property;
(3)
They are operated and maintained by the owners or lessees of the principal use; and
(4)
They serve a necessary function for or contribute to the comfort, safety or convenience of the owners or lessees of the principal use.
B.
Generally applicable regulations. The regulations of this section apply to all accessory uses and structures unless express provisions of this chapter establish more specific regulations for a particular type of accessory use or accessory structure.
(1)
Location. Accessory uses and structures must be located on the same lot as the principal use and principal structure to which they are accessory, except that an aboveground swimming pool or storage shed of 150 square feet or less may be located on a lot abutting a lot occupied by the principal use or structure to which the pool or shed is accessory if the abutting lots are under common ownership.
(2)
Time of establishment. No accessory building or structure other than a fence or temporary construction office may be placed on a lot before construction of the principal building.
(3)
Attached accessory structures. Accessory structures attached to a principal structure are regulated as principal structures.
(4)
Height. Accessory structures may not exceed 15 feet in height, unless otherwise specified in this chapter.
(5)
Setbacks. The parking and accessory structure tables for each building type in Article 4 establish siting and setback regulations for key accessory structures. All other accessory structures must be set back from any side or rear lot line a minimum of three feet and from any street lot line a minimum of 10 feet.
(6)
Yard. An accessory structure is not allowed in any front yard, except as otherwise expressly stated in this chapter.
(7)
Design. Accessory buildings with a building footprint of 250 square feet or more that are visible from A or B streets must comply with roof type and building material regulations that apply to principal building on the lot.



