Where fifty percent or more of the aggregate street frontage between two successive intersecting streets is occupied by buildings of the type and use permitted in the district before the effective date of this Zoning Code or any amendment thereto, with a front yard setback of more or less than required by this Zoning Code, the minimum front yard for new buildings or additions to existing buildings shall be the average setback distance of existing buildings located within 100 feet on either side of a given lot.  However, the depth of the front yard resulting therefrom shall be not less than twenty percent of the dimensions specified in the schedule set forth in Section 1270.05.
(Ord. 91-72.  Passed 5-8-91.)