Code of Civil Procedure § 405.21

An attorney of record in an action may sign a notice of pendency of action. Alternatively, a judge of the court in which an action that includes a real property claim is pending may, upon request of a party thereto, approve a notice of pendency of action. A notice of pendency of action shall not be recorded unless (a) it has been signed by the attorney of record, (b) it is signed by a party acting in propria persona and approved by a judge as provided in this section, or (c) the action is subject to Section 405.6.