Declares an intent to address the issue of de facto parentage. The legislature did not intend to create a de facto parent. The legislature, in enacting the statutes involving parentage, adoption, surrogacy, and other statutes addressing children, intended the statutes to be the sole method of adjudicating parentage and the legislature did not intend for there to be additional common law methods of determining parentage.

Declares that chapter 26.26 RCW, the statutes addressing adoption, surrogacy, and other statutory provisions addressing children, shall be the sole methods of determining parentage and shall preempt any common law cause of action to determine parentage.