Less than 9'6" in height and 120 square-feet in area: 5 feet away from primary home, anywhere in the backyard.
Higher than 9'6" or larger than 120 square-feet: 5 feet away from primary home, side property lines, and rear property line.
All accessory structures require a Planning Permit administered by the Planning Division. Sheds over 120 square-feet require a Building Permit after the Planning Permit is issued.