Washington Revised Code Title 11. Probate and Trust Law § 11.98.008. Trust creation--Methods

(1) Transfer of property to another person as trustee during the trustor's lifetime or by will or other disposition taking effect upon the trustor's death;

(2) Declaration by the owner of property that the owner holds identifiable property as trustee;  or

(3) Exercise of a power of appointment in favor of a trustee.