6.6.2. ACCESSORY BUILDINGS AND STRUCTURES

   In all zones , the buildings used for accessory uses shall comply with the following:

   A.   The standards of this Section 6.6.2 apply in all zones to buildings used for accessory uses , except as noted in the following:

      1.   A structure if five feet or less in height and ten square feet or less in area, such as a doghouse, a refuse container enclosure, or play equipment.

      2.    A shelter for food producing animals if six feet or less in height and 16 square feet or less in area.

   B.   An accessory building shall be built only on a lot occupied by a principal building or use;

   C.   An accessory building shall be developed in accordance with the dimensional standards of the principal land use , except as provided by this section and, when applicable, Sections 6.6.3, Residential Uses, and 6.6.5, Urban Agriculture Uses and Activities;

   D.   An accessory structure , except for an accessory dwelling unit , that exceeds the allowable height of a wall within a perimeter yard and is detached from a principal structure shall comply with the perimeter yard width standards of the principal structure , except that the accessory structure may be built to a parcel line with the consent of the adjoining or, when separated by an alley, adjacent property owner(s) or as permitted by Section 6.6.5, Urban Agriculture Uses and Activities;

   E.   Accessory structures , such as light poles, flagpoles, and other tall and narrow structures that are similar, shall be exempt from the setback requirement. Amateur radio towers are exempt from the setback requirement and are allowed to a maximum height of 100 feet;

   F.   An accessory building , except for a stable or enclosure for animals , may be attached to a principal building , provided that its construction complies with the development requirements of the principal building ;

   G.   The use of solar energy collectors for the purpose of providing energy for heating or cooling shall be permitted in all zones , whether as part of a principal building or as an accessory building . Such solar collection devices shall not be included in computing lot coverage ;

   H.   All structures for livestock and other large farm animals such as ratites, as defined in the Tucson Code Chapter 4, Animals and Fowl, shall be set back at least 50 feet from all property lines , except corrals that shall be set back ten feet from all property lines . In addition, the proximity of corrals and barns or other structures for large farm animals from a dwelling unit on adjacent property shall be in accordance with Tucson Code Chapter 4, Section 4-27;

   I.   The maximum height of a wall or fence within a perimeter yard shall be six feet; however, the wall or fence may be higher than six feet, but no higher than ten feet, if: (See Figure 6.6.1-A, Height of Wall or Fence within a Side or Rear Perimeter Yard .)

      1.   At least 75% of the area above six feet in height is left unobstructed and open through the use of architectural elements, such as arches, columns, or wrought iron;

      2.   Part of, or located on top of, a retaining wall no higher than ten feet measured from design grade and no higher than six feet measured from the top of the retaining portion of the wall;

      3.   A greater height is required through the rezoning process or the special exception land use process; or,

      4.   A greater height is required by a specific UDC standard.

   J.   In nonresidential zones , walls or fences, as permitted in Section 6.6.2.I above, may exceed the height standards, provided the wall or fence complies with the perimeter yard standards applicable to buildings on the site ;

   K.   Accessory uses , buildings , and structures are not required to provide additional parking, landscaping and screening, or loading spaces beyond what is required of the principal use .

Figure 6.6.1-A: Height of Wall or Fence Within a Side or Rear Perimeter Yard

(Am. Ord. 11171, 5/20/2014; Am. Ord. 11328, 12/8/2015; Am. Ord. 11890, 12/7/2021)