This Chapter shall specifically apply to the adjustment of boundary lines between or among four (4) or fewer existing adjacent lots, where no new lots are created, and the lots so adjusted are not made nonconforming as to minimum size, frontage or setback by said adjustments, unless a variance is granted pursuant to the requirements of Title 19 of this Code. If the existing lots are nonconforming as to the requirements of Title 19, the lot line adjustment shall not render any lot more nonconforming. All applications to adjust lot lines among five (5) or more adjacent lots shall require a tentative map application for a subdivision pursuant to this title. (Ord. 2004-7 § 2, 2004; Ord. 89-2 § 2, 1989.)