A. New construction that exceeds eighteen feet above grade; or

B. New construction of an accessory structure or alteration to an existing accessory structure that is more than six feet above grade and is less than twenty-five feet from a property line; or

C. New construction of an accessory structure or alteration to an existing accessory structure that is ten feet above grade and less than thirty-five feet from a property line;

D. New construction of architectural projections (e.g., towers, cupolas) on main and accessory buildings implementing exceptions to Height Limits for Main Structures subject to section 17.42.040.