Declaration of Due Diligence

Orange County Superior Court · Locally Approved Forms

Verified current as of July 16, 2026

This form is used to show a court that you made a good-faith effort to find and notify someone (like a defendant or witness) about legal proceedings, even though you couldn't locate them. Someone involved in a lawsuit would need to file it when they've tried multiple ways to serve documents to another person but haven't been able to reach them.