§ 150.106 ACCESSORY USES AND STRUCTURES.
   (A)   The uses of land, buildings, and other structures permitted in each of the districts established in this Code are designated by listing the principal uses. In addition to such principal uses, accessory uses may be permitted in certain districts. Accessory buildings or structures shall:
      (1)   Be customarily incidental to the principal use established on the same lot;
      (2)   Be subordinate to and serve such principal use;
      (3)   Be intended for the comfort, convenience, or necessity of users of such principal use;
      (4)   Not be designed for human habitation (except in the case of a permitted guest house);
      (5)   Not be attended by nuisance factors;
      (6)   Not be greater than 1,000 square feet;
      (7)   Not exceed the number of buildings allowable as shown in the development standards for each district with a variance;
      (8)   Not exceed a cumulative total of 1,500 square feet per lot;
      (9)   The height of an accessory building or structure may not exceed the height of the principal building or structure;
      (10)   All accessory buildings and structures, other than detached garages, must be located in the rear yard behind the principal building or structure, except where the principal building or structure is more than 75 feet from the front lot line. If the principal building or structure is more than 75 feet from the front lot line, an accessory building or structure may be located in front or to the side of principal building or structure provided that the accessory building or structure is more than 75 feet from the front lot line. Unless the accessory building or structure is architecturally compatible in construction materials, color, and design to the principal building or structure, it must be screened by landscaping from being seen from the front or side lot lines. The landscaping providing the screening must be located within 25 feet from the front and side(s) of the accessory building or structure.
      (11)   Detached garages may be located to the side or behind the principal building or structure, except when the principal building or structure is more than 75 feet from the front lot line. If the principal building or structure is more than 75 feet from the front lot line, a detached garage may be located in front of the principal building or structure. Detached garages must be architecturally compatible in construction materials, color, and design to the principal building or structure.
   (B)   Accessory buildings or structures may be used in conjunction with, support of, or storage for a home occupation by special use permit.
   (C)   Any changes to an accessory use or structure (e.g., placement, angle, size, etc.) not included within the plan submitted in support of the permit application on which the accessory use or structure permit was granted must have the written approval of the city prior to the change being constructed or performed.
   (D)   For property zoned to be included in a single family residential or PUD District and used only as a single family residential use, the rainwater harvesting systems described in this division (D) shall constitute accessory structures, but shall not (to the extent of the maximum size or capacity provided in this division (D)) be subject to the following regulations: (i) the limitations and restrictions set forth in divisions (A) (7), (8), and (10) of this section; or (ii) the limitation on the maximum number of buildings and the maximum combined floor areas of accessory structures set forth in § 150.134. By way of clarifying example, up to three accessory buildings and up to a cumulative 1,500 square feet of accessory structures that comply with all applicable provisions of this Code may be allowed notwithstanding the fact that one or more of the rainwater harvesting systems described in this division (up to the maximum size or capacity provided) are located on the affected property. In addition, a rainwater harvesting system described in divisions (D)(1) and (2) may be located in a side yard setback, provided that it is not located in a utility or drainage easement; and rainwater harvesting systems described in division (D)(1), (2), and (3) need not be architecturally compatible with the primary structure nor screened from view.
      (1)   One or more receptacles with a cumulative capacity not greater than 175 gallons that receive water from a single downspout on the primary structure used as a home if the receptacle(s) are located within six feet of the eaves of the home facing the front yard (maximum capacity of allowed receptacles is measured by each downspout but more than one downspout may be the source of water for allowed receptacles), provided that the receptacle does not function with the use of any electrical or pressurizing equipment;
      (2)   A receptacle with a capacity not greater than 350 gallons for each downspout on a building if it is located behind the front wall of the primary structure used as a home, provided that the receptacle does not function with the use of any electrical or pressurizing equipment; and
      (3)   One or more rainwater harvesting systems with a cumulative total area footprint of 350 square feet (whether above or below ground) located in a back yard.