A. Principal use to be present. An accessory use or structure in any zoning district shall not be established prior to the principal use or structure being present or under construction.
B. Placement restrictions. An accessory use or structure in a residential district may be established subject to the following regulations:

(1) Accessory building number limits. In any residential district, in addition to the principal building, a detached garage or attached garage and one additional accessory building may be placed on a lot.
(2) Accessory building size limits. No detached accessory building or structure shall exceed the height of the principal building or structure.
(3) Attached accessory buildings. All accessory buildings which are attached to the principal building shall comply with the yard requirements of the principal building.
(4) Detached accessory buildings. No detached accessory building shall occupy any portion of the required front yard, and no detached accessory building shall occupy more than 40% of the required rear yard or be located within three feet of any other accessory building. An accessory building shall not be nearer than 10 feet to the principal structure unless the applicable building code regulations in regard to one-hour fire-resistive construction are complied with. In no event can the accessory uses or structures be forward of the front line of the principal structure.
(5) Accessory building setbacks. Accessory building setbacks shall be as prescribed for each zoning district.

C. Use restrictions, residential district. Accessory uses or structures in residential districts shall not involve the conduct of any business, trade, or industry, except for home occupations as defined herein, and shall not be occupied as a dwelling unit.
D. Placement restrictions, nonresidential districts. An accessory use or structure in a business or manufacturing district may be established in the rear yard or side yard and shall have setbacks as prescribed in each zoning district.
E. Reversed corner lots. When an accessory structure is located on the rear of a reversed corner lot, it shall not be located beyond the front yard required on the adjacent interior lot to the rear nor nearer than five feet to the side line of the adjacent structure.
F. Landscaping and decorative uses. Accessory structures and vegetation used for landscaping and decorating may be placed in any required yard area. Permitted structures and vegetation include flagpoles, ornamental light standards, lawn furniture, sundials, birdbaths, trees, shrubs and flowers and gardens.
G. Temporary uses. Temporary accessory uses, such as real estate sales field offices or shelters for materials and equipment being used in the construction of a permanent structure, may be permitted by the Zoning Administrator.
H. Garages in embankments in front yards. Where the mean natural grade of a front yard is more than eight feet above the curb level, a private garage may be erected within the front yard, provided that:

(1) Such private garage shall be located not less than five feet from the front lot line;
(2) The floor level of such private garage shall be not more than one foot above the curb level; and
(3) At least 1/2 the height of such private garage shall be below the mean grade of the front yard.