How to Serve Divorce Papers in California

Who Can Serve (and Who Can't)

In a traditional California divorce (FL-100 petition), the petitioner must have the filed documents formally served on the respondent. Two absolute rules:

1. The server must be at least 18 years old
2. The server cannot be a party to the case — meaning you cannot serve the papers yourself

Beyond that, almost anyone qualifies: a friend, relative, coworker, professional process server, the county sheriff's office, or a registered process server. The server doesn't need special credentials for personal service.

The Four Service Methods

Personal Service: The most straightforward method. The server physically hands the filed copies of the FL-100 (Petition), FL-110 (Summons), FL-105 (UCCJEA Declaration, if children are involved), and a blank FL-120 (Response) directly to the respondent. This can happen anywhere — at home, at work, in a parking lot. Once the papers are in the respondent's hands, service is complete.

Notice and Acknowledgment of Receipt (Form FL-117): The server mails the documents to the respondent along with two copies of Form FL-117 and a postage-paid return envelope. The respondent signs and returns the FL-117 to acknowledge receipt. Service is complete on the date the respondent signs — not the date of mailing. If the respondent refuses to sign or ignores the mailing, this method fails and you need to try another approach.

Substituted Service: When the server can't find the respondent after multiple diligent attempts at personal service, they can leave the papers with a responsible adult (someone who appears to be at least 18) at the respondent's home or workplace. A second copy must also be mailed to the same address. Service is deemed complete 10 days after mailing. This requires documenting the failed personal service attempts.

Service by Publication or Posting: The last-resort method when the respondent cannot be located after an exhaustive search. The petitioner files a motion asking the court for permission to publish a notice in a local newspaper for a specified period (usually four consecutive weeks). If a fee waiver is in effect, the petitioner can request posting at the courthouse instead. This requires a sworn declaration describing the search efforts undertaken.

Filing Proof of Service

After service is complete, the server fills out and signs Form FL-115 (Proof of Service of Summons). This document records who served the papers, when, where, and by what method.

The petitioner files the FL-115 with the court. This step matters for two reasons:

1. It documents the waiting-period trigger. Under Family Code § 2339, the mandatory six months begins on the date the respondent was served (or made a general appearance). Filing the FL-115 gives the court a record of service; it does not itself start the clock.

2. It establishes jurisdiction. The court cannot act on the case without proof that the respondent was properly notified.

Service Deadlines and the Respondent's Window

Once served, the respondent has 30 calendar days to file a Response (Form FL-120) with the court and pay their $435 filing fee. If they don't respond within 30 days, the petitioner can request a default (Form FL-165).

The FL-115 Proof of Service must be filed within 60 days of filing your petition. Serve immediately after filing so the waiting period can start; if service is delayed, check your court's status procedures.

How the Joint Petition Eliminates Service

The 2026 Joint Petition (Form FL-700) under SB 1427 eliminates service of process entirely. When both spouses sign and file the petition together, the co-signatures constitute mutual service and a general appearance by both parties.

This means:

• No third-party server needed
• No FL-115 to file
• No waiting for the respondent to be located or cooperate
• The six-month waiting period starts on the filing date, not a later service date

For couples who are already in agreement, this removes the most logistically frustrating step of the traditional divorce process.

Dealing with Difficult Service Situations

Spouse is avoiding service: Some respondents deliberately dodge process servers. California allows substituted service after documented failed attempts — the papers can be left with another adult at their residence or workplace, then mailed. If that fails, you can apply for service by publication.

Spouse lives out of state: Personal service, substituted service, and mail-based methods all work across state lines. The key is that service must comply with California's rules (since that's where the case is filed). A process server in the respondent's state can handle the physical delivery.

Spouse's address is unknown: Start with every reasonable effort to locate them — phone calls to mutual contacts, social media, public records searches, last known employer. Document every step. If the search is genuinely exhaustive, the court will likely grant service by publication.

For a chronological walkthrough of the full filing process — from choosing your path through judgment assembly — the California Divorce Filing Process Guide covers service mechanics, deadline tracking, and the proof-of-service documentation the court requires.

See more California guides →