The requirements and regulations set forth in this ordinance shall be subject to the following exceptions and modifications.

14.1.

Front Yard. The front yard requirements of this ordinance shall not apply on lots where the average depth of existing front yards on developed lots located within 100 feet on each side thereof and within the same block and zoning district is greater or less than the minimum required front yard depth. In each such case, the depth of the front yard on such lot shall be not less than the average front yard depth on such developed lots.

On double-frontage lots the required front yard shall be provided on each street.

14.2.

Height limits. Height limitations do not apply to the following: chimneys, church steeples, flagpoles, grain elevators, distribution lines, towers and poles, radio and television antennas, water towers and similar structures.

14.3.

Temporary uses. Temporary buildings used in conjunction with construction work may only be permitted 30 days prior to the construction work. Such temporary buildings shall be removed no later than 30 days upon completion of the construction work.