Wash. Admin. Code § 110-148-1360
(1) When you meet the licensing requirements, you may apply to us for certification of your home, rather than a license, if the following conditions apply:
[WSR 18-14-078, recodified as § 110-148-1360, filed 6/29/18, effective 7/1/18. Statutory Authority: Chapters 13.34 and 74.13 RCW, RCW 74.15.030(2), 74.15.311(2), 74.13.032, 13.04.011, 74.13.020, 13.34.030, 74.13.031, 13.34.145, 74.15.311, 74.15.030, and 2013 c 105. WSR 15-01-069, § 388-148-1360, filed 12/11/14, effective 1/11/15.]