Except as otherwise provided in this article, no lot, premises, building or portion thereof in zone R-1.5X2 shall be erected, constructed, built, altered, enlarged, built upon, used, or occupied for any purpose except as a private one-family residence, small family daycare home, small community care facility, or transitional or supportive housing structured as a single-family residence. A single-family transient use of a "single-family residence" or "accessory dwelling unit", as defined in section 10-3-100 of this chapter, by a single housekeeping unit is permitted to commence two (2) times per calendar year for each single-family residence or accessory dwelling unit. Use of a single-family residence or accessory dwelling unit for a single-family transient use more than twice per calendar year is prohibited. (Ord. 17-O-2724, eff. 2-10-2017)