Zero-lot-line development is permitted in the R2 two-family residential and R3 multifamily residential zoning districts. Where regulations included herein conflict with regulations included in the R2 and R3 district regulations or other applicable sections of this title, the regulations included herein shall apply. [Ord. 91-15 §2, 1991; Ord. 84-32-O §1, 1984. Formerly §17.34.020].