No commercial building shall exceed the height limits as prescribed in Section 17-7.

No single-family residential or religious building shall exceed the height limits as prescribed in Section 17-7, except as follows: church spires, flagpoles, chimneys, antennas, residential cupolas and similar structures may be erected on the building above the height limits prescribed by this chapter if approved by the Zoning Officer and/or the Planning Board, but in no case may the combined height of the structure be more than 124% of the maximum height permitted for the use in the district.