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(a) Unless otherwise expressly stated in this Zoning Code, accessory uses and structures are permitted in conjunction with allowed principal uses and structures. Limitations on the number of principal buildings permitted per lot are not to be construed as applying to accessory buildings and structures.
(b) Unless otherwise expressly stated, accessory uses and structures are subject to the same regulations that apply to principal uses and structures.
(c) Accessory uses and structures must:
(.1) be subordinate to the principal use and principal structure in terms of area and function;
(.2) contribute to the comfort, convenience, or necessity of occupants of the principal structure or principal use served; and
(.3) be customarily found in association with the principal use or principal structure.
(d) Accessory structures must be constructed in conjunction with or after the principal structure. They may not be constructed before the principal structure. An accessory structure for a residential use shall not exceed 130 sq. ft. and shall not exceed 15 ft. in height, unless otherwise stated by other provisions of the Zoning Code. 534
(e) Accessory uses and structures must be located on the same lot as the principal use and structure, except as otherwise expressly stated.
(f) An accessory structure located in a historic district or located on a lot that is listed on the Philadelphia Register of Historic Places is subject to review by the Historical Commission, pursuant to Chapter 14-1000 (Historic Preservation).
(g) A regulated use, as defined in § 14-603(13) (Regulated Uses), shall not be permitted as an accessory use to a principal use on a lot.