Rule 5.635.Parentage
Division 3. Juvenile Rules · Chapter 9. Parentage · Last amended 2020 · Last verified September 10, 2026
Full Text of Rule 5.635
Plain-English Summary
The court does not wait to be asked. It has a duty to inquire about and try to determine the parentage of every child who is the subject of a petition, and it may enter a judgment of parentage under the Uniform Parentage Act. Once a petition is filed, the juvenile court has exclusive jurisdiction over a parentage action while the case is open.
The inquiry starts at the initial hearing in a dependency case, or at disposition in a delinquency case, and continues at later hearings until parentage is settled. The court asks the parents present, and anyone else who might know, about the identity and address of every presumed or alleged parent. The rule then lists the kind of questions that help: whether a judgment already exists, whether the mother was married or in a registered domestic partnership at or after conception, whether she believed she was, whether she was cohabiting, whether support was paid or promised, whether anyone acknowledged parentage formally or informally or agreed to go on the birth certificate, whether genetic testing was done, and whether the child has been raised in a co-parenting arrangement.
A properly executed and filed voluntary declaration has the force of a judgment, and the person who signed it is presumed to be the child’s parent.
Where the issue is raised, the court asks what has already been decided, has the clerk send form JV-500 to the local child support agency, and takes judicial notice of any prior determination that comes back. The agency has 25 judicial days to answer, with certified copies attached.
If there has been no prior determination, the court makes one. Any alleged father and his counsel complete form JV-505, which must be available in the courtroom; the court may order genetic testing; and it may decide parentage on testimony, declarations or statements. It must warn any alleged parent that a finding of parentage carries a duty of financial support, and may lead to a support action if the child receives welfare benefits. A finding of parentage is recorded on form JV-501 and sent to the local child support agency.
Alleged parents get notice. The clerk mails each named alleged parent, at the last known address by certified mail with return receipt, a copy of the petition, notice of the next hearing, and form JV-505 — unless the petition has been dismissed, the case has ended, the alleged parent has already denied parentage and waived notice, or they have relinquished the child to the welfare department. If an alleged parent appears and asks for a judgment on form JV-505, the court must decide whether they are the biological parent and, if asked, whether they are the presumed parent.
Frequently Asked Questions
Does the juvenile court have to look into who a child’s parents are?
Yes. The rule imposes a duty to inquire about and attempt to determine the parentage of every child who is the subject of a petition under section 300, 601 or 602, and the inquiry continues at hearings until parentage is established.
What is the effect of a voluntary declaration of parentage?
Once properly executed and filed with the California Department of Child Support Services, it establishes parentage with the same force and effect as a court judgment, and the signer is presumed to be the child’s parent.
How is an alleged parent notified?
The clerk sends the petition, notice of the next scheduled hearing, and form JV-505 by certified mail, return receipt requested, to the alleged parent’s last known address — unless the case has ended, the alleged parent has already denied parentage and waived notice, or has relinquished the child to the county.
Can the court order genetic testing?
Yes. To determine parentage the juvenile court may order the child and any alleged parents to submit to genetic tests, proceeding under the Family Code.
What must an alleged parent be told before a parentage finding?
That a finding of parentage carries responsibility for the child’s financial support, and that if the child receives welfare benefits the parent may face an action to obtain support payments.
Amendment History
Rule 5.635 amended effective January 1, 2020; adopted as rule 1413 effective July 1, 1995; previously amended effective January 1, 1999, January 1, 2001, January 1, 2006, July 1, 2006, January 1, 2007, and January 1, 2015.
(Subd (a) amended effective January 1, 2015; previously amended effective January 1, 2001, January 1, 2006, and January 1, 2007.) (Subd (b) amended effective January 1, 2020; adopted effective January 1, 2001; previously amended effective January 1, 2006, January 1, 2007, and January 1, 2015.) (Subd (c) amended effective January 1, 2020; adopted effective January 1, 2001; previously amended effective January 1, 2006, July 1, 2006, January 1, 2007, and January 1, 2015.) (Subd (d) amended effective January 1, 2015; adopted as subd (b); previously amended and relettered effective January 1, 2001; previously amended effective January 1, 2006, and January 1, 2007.) (Subd (e) amended effective January 1, 2015; adopted as subd (c); previously amended and relettered effective January 1, 2001; previously amended effective January 1, 2006, and January 1, 2007.) (Subd (f) amended effective January 1, 2015; adopted as subd (d); previously amended and relettered effective January 1, 2001; previously amended effective January 1, 2006, and January 1, 2007.) (Subd (g) amended effective January 1, 2015; adopted as subd (e); previously amended and relettered effective January 1, 2001; previously amended effective January 1, 2006, and January 1, 2007.) (Subd (h) amended effective January 1, 2007; adopted as subd (f) effective January 1, 1999; previously amended and relettered effective January 1, 2001; previously amended effective January 1, 2006.)