Civil
POS-040: Proof of Service—Civil
Current as of July 21, 2026 · tracked for revisionsFillable PDFJudicial Council of California
This form documents that legal papers in a civil case have been officially delivered to all parties involved, providing proof that proper notice was given. Lawyers, court clerks, and individuals representing themselves use it to show the court that everyone who needs to know about a lawsuit or court action has actually been notified.
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Step-by-step guideProof of Service →Serving the other side isn't enough — the court needs a filed proof. Match your service method to the right POS form and file it before your hearing.Forms that go with POS-040
DE-140RequiredNotice of Petition to Administer EstateThe Notice of Petition to Administer Estate must be filed and served on all interested parties to notify them of the hearing on the petition for letters of administration.›DE-147RequiredDuties and Liabilities of Personal RepresentativeThe Duties and Liabilities of Personal Representative form must be signed by the administrator to acknowledge their legal responsibilities before letters of administration are issued.›POS-030AttachmentProof of Service by First-Class Mail—CivilThe Proof of Service by Mail form is used to document that the Notice of Petition to Administer Estate was properly served on all heirs and interested parties as required by law.›DE-111Often filed with itPetition for ProbateThe Petition for Probate (DE-111) is the primary probate petition form that may be used as an alternative or companion to formally open the decedent's estate in conjunction with requesting letters of administration.›DE-160Next stepInventory And AppraisalThe Inventory and Appraisal form is typically required after letters are granted to formally list and value all assets of the decedent's estate.›DE-150Next stepLettersThe Letters of Administration form is the official document issued by the court upon approval of the petition, granting the petitioner authority to act on behalf of the estate.›