Wash. Rev. Code § 26.33.140Download PDFCurrent through 2024 Section 26.33.140 - Who may adopt or be adopted(1) Any person may be adopted, regardless of his or her age or residence.(2) Any person who is legally competent and who is eighteen years of age or older may be an adoptive parent.RCW 26.33.1401984 c 155 § 14.