CA Civ Proc Code Section 491.430

(a)

The court in which the action or special proceeding subject to the lien under this article is pending may permit the plaintiff who has obtained the lien to intervene in the action or proceeding pursuant to Section 387.

(b)

For the purposes of subdivision (a) of Section 491.460 and Section 491.470, a plaintiff shall be deemed to be a party to the action or special proceeding even though the plaintiff has not become a party to the action or proceeding under subdivision (a).