The following development standards help to ensure that accessory structures and buildings remain secondary to the principal uses and buildings on a site. The standards provide for necessary access around structures, help maintain privacy to abutting lots, and maintain open front setback areas. In addition to any requirements in the base zone and any specific approval criteria in section 14-4C-2 of this article, accessory structures are subject to the following requirements:
A. Time Of Construction: Accessory structures may not be constructed prior to the start of construction of the principal building on a site; except, that temporary construction trailers may be placed on a site at the time site clearance and grading begins and may remain on the site only for the duration of construction.
B. Setbacks:
1. Accessory Structures Other Than Buildings: Allowed accessory structures, other than buildings, may be located anywhere on a lot, provided the structure complies with any specific setback standards listed in section 14-4C-2 of this article, and provided that on corner lots, such a structure is located in compliance with the provisions of chapter 5, article D, "Intersection Visibility Standards", of this title.
2. Detached Accessory Buildings:
a. Corner Lot Setback Requirements: On corner lots, detached accessory buildings must be located in compliance with the provisions of chapter 5, article D, "Intersection Visibility Standards", of this title.
b. Front Setback Requirements:
(1) Except for roadside stands, detached accessory buildings must comply with the principal building, front setback requirements of the base zone in which the building is located. Roadside stands, when allowed, are exempt from this requirement. In addition, garages and carports must comply with subsections B2b(2) and B2b(3) of this section.
(2) Garages and carports must be located pursuant to the site development standards of the applicable base zone.
(3) For single-family and two-family uses, a garage or carport must be set back at least twenty five feet (25') from any street- side lot line that the garage or carport entrance faces. (Ord. 05-4186, 12-15-2005)
c. Side And Rear Setback Requirements:
(1) Residential Zones:
(A) Along street-side lot lines, accessory buildings must comply with the front, principal building setback requirement. Along side or rear lot lines that are not street-side lot lines, accessory buildings must be set back at least five feet (5') from the side or rear lot line. This five foot (5') setback requirement may be reduced if an accessory building is set back at least sixty feet (60') from the edge of the street pavement. In such cases, the building may be located within three feet (3') of a side or rear property line. However, garages and carports entered directly from an alley must be set back at least five feet (5') from the alley right-of-way line, regardless of how far back the structure is from the street.
(B) A detached accessory building for a zero lot line dwelling must comply with the same side setback requirements as the principal dwelling. (Ord. 06-4245, 12-12-2006)
(2) Nonresidential Zones: Along street-side lot lines, accessory buildings must comply with the front, principal building setback requirement. Along side or rear lot lines that are not street- side lot lines, detached accessory buildings do not have a required side or rear setback, unless the detached building is a parking garage that is accessed from an alley. In such a case, the garage must be set back at least five feet (5') from the alley right-of-way line.
3. Attached Accessory Buildings:
a. An attached accessory building must comply with the setback requirements applicable to the principal building to which it is attached. In addition, attached garages and carports must comply with subsections B3b and B3c of this section.
b. Attached garages and carports must be located pursuant to the site development standards of the base zone.
c. For single-family and two-family uses, a garage or carport must be set back at least twenty five feet (25') from any street- side lot line that the garage or carport entrance faces. (Ord. 05-4186, 12-15-2005)
d. For purposes of determining setbacks, garages located in the rear yard and attached to the principal dwelling with a (non- habitable) breezeway (8 feet or narrower in width) will be considered detached accessory buildings and, therefore, are subject to the setback requirements for detached accessory buildings, rather than principal building setback requirements. Similarly, subject breezeways shall be treated as detached accessory structures/buildings. (Ord. 18-4744, 4-2-2018)
4. Adjustments To Setback Requirements:
a. A minor modification to reduce setback requirements for an accessory use, building, or structure may be requested according to the approval criteria and procedures for minor modifications contained in chapter 4, article B of this title.
b. A special exception may be requested to reduce setback requirements for an accessory use, building, or structure beyond what is allowed by minor modification. The Board of Adjustment may adjust setback requirements if the owner or lawful occupant of a property demonstrates that the general special exception approval criteria and the following specific approval criteria have been satisfied:
(1) The situation is peculiar to the property in question;
(2) There is practical difficulty in complying with the setback requirements;
(3) Granting the exception will not be contrary to the purpose of the setback regulations; and
(4) Any potential negative effects resulting from the setback exception are mitigated to the extent practical.
(5) The accessory use, building or structure will be located no closer than three feet (3') to a side or rear property line, unless the side or rear property line abuts a public right-of-way or permanent open space.
C. Building Separation And Lot Coverage:
1. In residential zones, the combined footprint of all detached accessory buildings may not exceed fifteen percent (15%) of the total lot area. The area of any outdoor special vehicle storage area must also be included as a part of this fifteen percent (15%) lot coverage limitation.
2. No portion of a detached accessory building may be located closer than three feet (3') to the principal building.
3. There must be at least three feet (3') between all unattached accessory buildings.
D. Height:
1. In residential zones, one story accessory buildings and structures, except for those specifically exempted, may not exceed a height of fifteen feet (15'). One and one-half (11/2) story and two (2) story accessory buildings may not exceed a height of twenty feet (20').
2. In nonresidential zones, accessory buildings and structures, except for those specifically exempted, may not exceed the maximum height standard of the base zone in which the structure is located.
3. Structures and building features that are exempt from the maximum height standards of the base zone are also exempt from the applicable height standards listed in subsections D1 and D2 of this section.
4. A minor modification may be requested adjusting the maximum height for an accessory building according to the procedures and approval criteria for minor modifications contained in chapter 4, article B of this title. (Ord. 05-4186, 12-15-2005)