A. There shall be a rear yard in an R-1 zone behind every main building of not less than twenty-five feet or twenty percent of the depth of the lot, whichever is less; provided, however, the rear yard may be reduced to five feet if not more than forty-five percent of the lot is covered by buildings or structures.

B. Within the R-1-4.5 zone only, there shall be a rear yard behind every main building of not less than five feet. (Ord. 4771 § 3, 2014; prior code § 17.13.060)