(A) Relationship to primary use.
(1) An accessory use must be related to and serve the purpose of the primary use on the site.
(2) An accessory use must be clearly incidental and subordinate to the primary use on the site, which may be demonstrated by factors such as the floor area of the use, economic importance of the use, and the number of customers/visitors generated by the use.
(3) If the primary use is destroyed or removed, the accessory use is no longer allowed.
(B) Maximum size. The following maximum size standards apply to all accessory uses except accessory dwelling units (ADUs):
(1) When an accessory use other than a structure for residential vehicle parking and/or storage is located within a building, the total floor area of the accessory use may not exceed 49% of the habitable floor area of the building containing the associated primary use.
(2) The floor area of a residential garage or a shed may not exceed 100% of the habitable floor area of the building containing the associated primary use.
(3) The Director may allow the floor area of an accessory use to exceed the limitation with an administrative adjustment. To approve the administrative adjustment, the Director must make the findings in § 155.412.030(F) (Findings for Approval) and find that:
(a) The accessory use complies with § 155.304.020(A) (Relationship to Primary Use); and
(b) Unique circumstances associated with the primary use warrant the additional floor area for the accessory use.
(C) Location. An accessory use must be located on the same site as the primary use.
(D) Timing of establishment. An accessory use may not be established before the primary use is established.
(E) Residential accessory uses. Accessory uses customarily associated with a place of residence on the same site are permitted. Allowed accessory uses include, but are not limited to the following:
(1) Home occupations in conformance with § 155.304.070 (Home Occupations);
(2) Garage and yard sales in conformance with § 155.336.040(B) (Garage Sales);
(3) Keeping of domestic pets in conformance with Municipal Code Chapter 91 (Animals);
(4) Vehicle parking serving on-site uses in conformance with § 155.324 (Parking);
(5) Gardening, landscaping, and open space management in conformance with Municipal Code §§ 94.15 et seq. (Weeds, Rubbish and Debris);
(6) Storage of personal household property inside a permitted structure; and
(7) Personal hobbies for non-commercial purposes.
(F) Non-residential accessory uses. Accessory uses customarily associated with a primary non-residential use on the same site are permitted. Allowed accessory uses include, but are not limited to the following:
(1) Administrative offices for the primary use;
(2) Vehicle parking serving on-site uses in conformance with § 155.324 (Parking);
(3) Wholesale or retail sales to a buyer's custom order of goods produced by the primary use;
(4) Back-of-the-house niche manufacturing of products sold in a retail facility (such as chocolate production in the back of a candy store, craft beer brewing in a restaurant/brewery, or guitar fabrication in the back of a music instrument store);
(5) The storage of goods associated with the primary use in conformance with § 155.304.110 (Outdoor Storage);
(6) Tasting rooms associated with a food or beverage production use;
(7) Caretaker units in the industrial and public zoning districts; and
(8) Other similar uses as determined by the Director through a zoning clearance.
(Ord. 885-C.S., passed 5-21-19; Am. Ord. 902-C.S., passed 8-18-20; Am. Ord. 916-C.S., passed 7-6-21; Am. Ord. 951-C.S., passed 10-17-23)