Accessory structures shall not be closer to side or rear lot lines than ten percent (10%) of the average width of the lot nor closer to the front lot line than thirty feet (30') from the right of way of any road. In no case shall an accessory structure extend in front of the rear line of the principal building except for the following:
A. First floor entrance steps, open terrace (without roofs or sides) and underground utility structures.
B. Eaves, chimneys, bay windows and other ordinary building projections to the extent of eighteen inches (18").
C. Main building entrance shelters smaller than thirty five (35) square feet and projecting not more than six feet (6'). (Ord. 90-O-16, 7-3-1990)