The erection of church spires, belfries, towers designed exclusively for ornamental purposes, chimneys or vents, or to elevator enclosures, stairway heads, cooling towers, or water tanks occupying in the aggregate less than 10% of the area of the roof on which they are located.

A parapet wall or cornice may extend above the height limit not more than five feet.

Usual home radio and television antennae except for amateur radio transmission.