In any district, an accessory use is permitted, subject to any special regulations for the district, and to the limitations set forth in this and the following sections, when located on the same premises as a lawfully existing principal use to which it is incidental and subordinate except as otherwise provided in Section 17.06.040O. No use shall be deemed to be or permitted as an accessory use which increases the number of dwelling units in any building or any lot beyond that which is permitted in the district. No recreation vehicle, travel trailer, cargo container, truck trailer, mobilehome, van or vehicle may be inhabited or lived in as an accessory use in any district unless specifically authorized under district regulations by a conditional use permit or administrative conditional use permit. Home occupations shall be governed by Section 17.52.220. The keeping of livestock or pets shall be governed by Sections 17.52.220 and 17.52.230. (Ord. 93-86 § 2: prior gen. code § 8-60.20)