No building or structure shall have a greater height than is permitted in the district where such building or structure is located, except as provided in this § 220-13. Chimneys, cupolas, silos, fire towers, steeples, water towers, spires or necessary mechanical appurtenances which are part of a building may exceed the height limitations established by this chapter, but no such structure shall be used as a place of habitation or for tenant purposes. Cooling towers, communications towers and similar freestanding structures proposed in excess of the permitted height in a district, shall be treated as special uses. The provisions of this § 220-13 shall not apply to agricultural uses and structures.