Filing Form FL-100 opens a California divorce case, but the case does not move anywhere until the other spouse is formally notified. That notification step is called service, and it has its own set of rules, methods, and deadlines separate from the paperwork itself.
Key Takeaway: California allows several ways to serve divorce papers, personal service, substituted service, service by mail, and service by publication or posting, but the server can never be the Petitioner or Respondent themselves. Whichever method is used, a signed Proof of Service (Form FL-115) has to be filed before the case can proceed.
What Service Means and Why It Is Required
Service is the formal, legally recognized way of notifying a spouse that a divorce case has been filed against them. The rule is: someone other than the person filing must give the court papers to the spouse or partner, and the court needs proof they received them. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve */}
This requirement exists so that every case, even an uncontested one where both spouses already agree on the outcome, has a documented moment when the other side was officially put on notice. Everything downstream, the response deadline, the mandatory waiting period, and eventually the judgment, is measured from that moment.
Filing the Petition and serving it are two separate steps with two separate dates. A case can sit filed with the court for weeks before service happens, and none of the deadlines that follow, the 30-day response window or the waiting period toward judgment, start counting until service is actually completed. That gap between filing and serving is easy to underestimate when mapping out a timeline.
Who Can (and Cannot) Serve the Papers
The rule is: the server must be 18 or older and not be part of the case. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve */}
That means neither the Petitioner nor the Respondent can hand over their own paperwork, no matter how amicable the divorce is. The requirement exists so there is always a neutral third party available to testify, if needed, about when and how service actually happened. Acceptable servers include:
- A friend or family member who is 18 or older and not involved in the case
- A professional process server
- A county sheriff, in counties where this option is offered
{/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve */}
A sheriff who serves papers charges a fee unless the requesting spouse has an approved fee waiver. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve */} Our fee waiver checker can help identify whether a household may qualify before that fee comes up.
Personal Service: The Standard Method
Personal service is the primary way California divorce papers are served. The rule is: the server hands the papers directly to the spouse, or leaves them next to the spouse and tells them what the documents are. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve */}
This method does not require the spouse's cooperation. A spouse cannot avoid being served simply by refusing to physically take the papers from the server's hand, since papers left in their presence with an explanation of what they are still count as personal service. Because it does not depend on the other person's willingness to participate, personal service is generally the most reliable starting point, and other methods tend to come into play only when personal service is not practical.
Substituted Service: When Personal Service Fails
If a spouse cannot be found for personal service after multiple attempts, California allows substituted service, where the papers are left with someone at the spouse's home or workplace. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve */}
This is a fallback option rather than a first choice, and it typically comes into play only after personal service has genuinely been attempted and failed.
Service by Mail With a Notice and Acknowledgment of Receipt
When a spouse is expected to cooperate and participate in moving the case forward, service by mail using a Notice and Acknowledgment of Receipt (Form FL-117) is available as a lower-cost alternative to personal service. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve-notice-acknowledgement-receipt */}
How This Method Works
- A server, an adult who is not part of the case, mails the Notice (FL-117) along with a copy of the Response form (FL-120) and a pre-addressed, stamped return envelope
- The server fills in the mailing date and signs the notice before it goes out
- The spouse signs the Notice once received and mails it back using the provided envelope
{/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve-notice-acknowledgement-receipt */}
When Service Is Considered Complete
The rule is: service is complete the day the spouse signs the Notice, not the day the server mailed it, and the spouse then has 30 days from that signing date to file a Response. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve-notice-acknowledgement-receipt */}
If the spouse does not sign and return the Notice, that attempt does not count as completed service, and personal service becomes the next step. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve-notice-acknowledgement-receipt */}
Service by Publication or Posting
When a spouse genuinely cannot be located, California courts can authorize service by publication or posting instead of requiring personal contact. {/* source: https://selfhelp.courts.ca.gov/service-publication-or-posting/finish-divorce */}
The Timeline
The rule is: notice must be published in a newspaper or posted for 28 days, after which the responding spouse has 30 additional days to respond, meaning a default generally cannot be requested until day 59 after service by this method begins. {/* source: https://selfhelp.courts.ca.gov/service-publication-or-posting/finish-divorce */}
Proof of This Type of Service
For posting, proof is filed using Form FL-985 (Proof of Service of Posting) along with Form FL-335 (Proof of Service by Mail). For publication, proof comes from documentation the newspaper provides showing the publication dates. {/* source: https://selfhelp.courts.ca.gov/service-publication-or-posting/finish-divorce */}
See how this applies to your case
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Start my case freeService by publication or posting has a real limitation: when a spouse cannot be found and is served this way, the court may not be able to order that spouse to do certain things, such as pay support or transfer property. {/* source: https://selfhelp.courts.ca.gov/service-publication-or-posting/finish-divorce */}
Serving a Spouse Who Lives Outside California
Personal service works the same way regardless of which state the spouse lives in, so it remains the most straightforward option even across state lines. As an alternative, papers can be sent by registered or certified mail with return receipt requested, though the same rule applies: the person mailing the documents cannot be the Petitioner or Respondent. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve */}
Comparing the Service Methods at a Glance
Each method fits a different situation, mainly depending on whether the other spouse's location is known and whether they are expected to cooperate.
| Method | Typical Use Case | Requires Spouse's Cooperation |
|---|---|---|
| Personal service | Spouse's location is known | No |
| Substituted service | Personal service attempted and failed | No |
| Service by mail (FL-117) | Spouse is expected to participate | Yes, spouse must sign and return the Notice |
| Publication or posting | Spouse cannot be located | Not applicable, requires court authorization first |
Proof of Service: Form FL-115
Whichever method is used, the server completes and signs Form FL-115, Proof of Service of Summons, describing when, where, and how service happened, and that original form is filed with the court. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve */}
The rule is: the case does not move forward without this form on file. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve */} All of these forms, FL-115, FL-117, FL-985, and FL-335, are available on our forms page.
What Happens After Service
Once service is completed and proven with Form FL-115, the responding spouse has 30 days to file a Response. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve */}
Service also starts California's mandatory waiting period before a divorce can be finalized. That period is separate from the response deadline and does not change based on which service method was used. For the full sequence from filing through judgment, see How to File for Divorce in California Without a Lawyer. For how service timing affects the overall case length, see How Long Does Divorce Take in California?
If a hearing date is involved, papers generally need to be served at least 16 court days beforehand, or 5 calendar days earlier if served by mail. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve */}
Common Mistakes That Delay Service
- Attempting to serve the papers personally instead of using an eligible server
- Choosing service by mail for a spouse who is unlikely to cooperate, without a personal service backup plan
- Moving to publication or posting without the court's authorization first
- Losing track of the signed Notice and Acknowledgment of Receipt or the completed FL-115
- Not filing the Proof of Service with the court after service is complete
- Miscounting the 30-day response window from the wrong start date
Frequently Asked Questions
Can I serve my own California divorce papers?
No. The server must be at least 18 years old and not a party to the case, so the Petitioner or Respondent cannot personally hand over the papers. A friend, family member, professional process server, or in some counties a sheriff can serve them instead. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve */}
What is service by publication and when is it allowed?
Service by publication or posting is an alternative method the court can authorize when the other spouse cannot be located. It requires publishing notice in a newspaper or posting it for 28 days, after which the responding spouse has 30 additional days to respond, meaning a default cannot be requested until day 59. Courts cannot order support or property transfers against a spouse served this way. {/* source: https://selfhelp.courts.ca.gov/service-publication-or-posting/finish-divorce */}
When does the 30-day response clock start?
The 30-day period for the other spouse to file a Response starts on the date they are served, not the date the Petition was filed. For service by mail with a Notice and Acknowledgment of Receipt, the clock starts the day the spouse signs the notice, not the day it was mailed. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve */}
What form proves my spouse was served?
The person who served the papers completes and signs Form FL-115, Proof of Service of Summons, and that original form must be filed with the court. The rule is: the case does not move forward without this form on file. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve */}
What if my spouse will not sign the Notice and Acknowledgment of Receipt?
If a spouse does not sign and return Form FL-117 after service by mail, that attempt does not count as completed service, and personal service becomes the next step. {/* source: https://selfhelp.courts.ca.gov/divorce/start-divorce/serve-notice-acknowledgement-receipt */}
How Virdix Helps With Service
Service trips people up less because of the law itself and more because of small procedural details, who is eligible to serve, which form goes with which method, and what has to be filed afterward. Virdix helps keep that organized:
- Guided intake, that identifies which service method fits a given situation
- The right companion forms, generated alongside the Petition, including FL-115 and FL-117
- Clear reminders, of what still needs to be filed once service is complete
- County-specific instructions, for local sheriff or process server options
Virdix does not serve papers or act as a process server. It prepares the paperwork so the service step goes smoothly once a server is lined up.
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Last updated: August 2026. This article is for informational purposes only and does not constitute legal advice. For advice about your specific situation, consult with a licensed California family law attorney.
Sources: Serve your divorce papers, Service by mail with Notice and Acknowledgement of Receipt, Finish your divorce after serving by publication or posting