Where an accessory building or structure is structurally attached to a main building, it shall be subject to, and must conform to all regulations of this ordinance applicable to the principal building.

No detached accessory building or structure shall be located closer than ten feet to any principal building.

An accessory building or structure shall not be erected prior to the establishment or construction of the principal building. This provision shall not apply to accessory farm buildings and structures.

Accessory buildings or structures shall not exceed 15 feet in height unless they are farm buildings or if permission to exceed 15 feet is obtained from the planning board. Building height for accessory building shall be in accordance with the definition contained in Subsection 15-10a7 of this chapter.

Accessory buildings or structures may not occupy more than 30 percent of a required rear yard.