A. Height limitations set forth elsewhere in this title shall be increased fifty percent (50%) when applied to church spires, towers, monuments, poles, smokestacks and similar structures.
B. Heights in excess of those allowed in this title shall be permitted only by conditional use permit granted by resolution of the city council determining that such structure would not be dangerous and would not adversely affect adjoining or adjacent property.
C. On any lot sloping downhill from the street, which has an average ground slope on that portion of the lot to be occupied by the main building of twenty five percent (25%) or more, measured in the general direction of the side lot lines, an additional twelve feet (12') of height may be permitted in such main building, provided the lowest floor shall not be less than ten feet (10') below the average established property line grades along the front of the lot.
D. In addition to height limitations set forth in this title, land located within two (2) miles of the boundary of an airport shall be subject to any height limitations established by the commissioner of aeronautics.
E. Chimneys and vents may extend three feet (3') above the highest roof point.
F. In the Mississippi River Critical Area Overlay District, no height exceptions shall be allowed in any residential district. (Ord. 1098, 11-8-2004)