Wash. Rev. Code § 11.130.590
(1) After the hearing on a petition under RCW 11.130.365 for conservatorship for an adult or under RCW 11.130.580(3) for a protective arrangement instead of a conservatorship for an adult, the court may issue an order under subsection (3) of this section for a protective arrangement instead of conservatorship for the adult if the court finds by clear and convincing evidence that:
(a) The adult is unable to manage property or financial affairs because:
(b) An order under subsection (3) of this section is necessary to:
(2) After the hearing on a petition under RCW 11.130.365 for conservatorship for a minor or under RCW 11.130.580(3) for a protective arrangement instead of conservatorship for a minor, the court may issue an order under subsection (3) of this section for a protective arrangement instead of conservatorship for the respondent if the court finds by a preponderance of the evidence that the arrangement is in the minor's best interest, and:
(b) Either:
(3) If the court makes the findings under subsection (1) or (2) of this section, the court, instead of appointing a conservator, may:
(a) Authorize or direct a transaction necessary to protect the financial interest or property of the respondent, including:
(4) After the hearing on a petition under RCW 11.130.580(1)(b), whether or not the court makes the findings under subsection (1) or (2) of this section, the court may issue an order to restrict access to the respondent or the respondent's property by a specified person that the court finds by clear and convincing evidence:
[ 2019 c 437 s 503.]