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FL-334Optional

Declaration Regarding Address Verification—Postjudgment Request to Modify a Child Custody, Visitation, or Child Support Order

California · Judicial Council of California · Effective January 1, 2025

This form is a sworn statement used to tell the court that the person filling it knows the current address of the other parent. It is used when asking the court to change an existing order about child custody, visitation, or child support.

The court describes it as: Tells the court that you are certain of the address where the other parent lives and that you had the other parent served by mail at that address with a Request for Order (form FL-300) to change a judgment or permanent orders for child custody, visitation, or child support. This is used as an attachment to a proof of service by mail.

Open the official PDFfrom Judicial Council of California

Where this fits in a case

After judgment

Stage: After judgment

This form is used when someone is asking the court to change a judgment or permanent order regarding child custody, visitation, or child support. It is used as an attachment to a proof of service by mail.

Either party may file.

Common questions

Who fills out this form?
The form is filled out by an attorney for one of the parties in the case, or by a party themselves.
What happens if I cannot verify the other parent's address?
If you cannot verify the other party's current address, you may not be able to use mail service, and the other party must be personally served.

Revision history

No changes recorded since we started tracking this form on October 9, 2026. The current version took effect January 1, 2025.

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