Except as specifically provided otherwise, in the "B-1" Community Business District and in all residential zoning districts, where lots having 50% or more of the frontage on one side of a street between intersections (that is, in one block) are developed with buildings, and the front setbacks of those lots do not differ by more than ten feet, the minimum required front setback on that block shall be the average of the existing front setbacks; provided, however, that in any built-up area, no front setback greater than 50 feet shall be required.
(1994 Code, § 40-3-8)