This chapter does not apply to the following residential facilities:
(1) Nursing homes licensed under chapter 18.51 RCW;
(2) Assisted living facilities licensed under chapter 18.20 RCW;
(3) Adult family homes licensed under chapter 70.128 RCW;
(4) Facilities approved and certified under chapter 71A.22 RCW;
(5) Residential treatment facilities licensed under chapter 71.12 RCW; and
(6) Hospitals licensed under chapter 70.41 RCW.