(1) Where the accessory building is structurally attached to a main building, it shall be subject to, and must conform to, all regulations of this chapter applicable to the main building.
(2) Accessory buildings and structures shall not be erected in any side yard nor in any front yard.
(3) An accessory building shall not occupy more than 25 percent of a required rear yard.
(4) No detached accessory building shall be located closer than three feet to any side or rear lot line. No detached accessory building shall be located closer than ten feet to any main building, except for garages upon meeting the following conditions:
(a) The foundation shall not be less than the minimum required by the local building code for frost protection (42 inches)
(b) On those portions of garages located within five feet of the main building, a fire separation wall of not less than one-hour fire resistance rating shall be provided on the garage building side. In those instances where the rear lot line is coterminous with an alley right-or-way, the accessory building shall not be closer than one foot to such rear lot line. In no instance shall an accessory building be located within a dedicated easement right-of-way.
(5) No detached accessory building in R-1 through R-4, RT, RM-1, O-1, B-2, and B-3 districts shall exceed one story or 15 feet in height. Accessory buildings in all other districts may be constructed to equal the permitted maximum height of structure in such districts.
(6) When an accessory building is located on a corner lot, the lot line of which is substantially a continuation of the front lot line of the lot to its rear, such building shall not project beyond the front-yard setback required on the lot to the rear of such corner lot.
(7) Household animal enclosures, dog runs, central air conditioning units, heat pumps, and other mechanical system components that could or are likely to produce noise, odors, and other nuisances shall not be located adjacent to an adjoining property owner's sleeping area where windows and/or doors on the adjacent property would be exposed to the nuisance.
In addition, sheds under 200 square feet do not require a permit but must comply with the above regulations.
Document: Chapter 94 Zoning Sec. 94-338