What does 'serving' your spouse with divorce papers mean?

The law affords everyone due process. In other words, before you can sue someone, you must first tell them what you want and why. Yes - divorce is a lawsuit. Your spouse must therefore receive a notice (via service) that you have filed suit and notice of what exactly you are suing them for. Put simply, you must tell your spouse the legal reason behind your divorce request. If you do not get your spouse properly served, your case could be delayed.

What are the ways you can serve your spouse with divorce papers?

Personal service: There are several ways to ensure your ex-to-be receives their due process in a divorce action. The first and most well-known method is personal service. It's considered the most reliable option. Someone who is not a party to the case must personally deliver the documents to the opposing party. The third party must be over 18. The local sheriff or a professional process server can also help effectuate service, for a fee, if you do not want to get anyone else involved. Service can happen anywhere and at any time: at home, in public, or at work. It does not matter if the opposing party refuses to take the papers when they are handed to them. Service is valid even if they set the documents on fire, as long as the server properly fills out a 'Proof of Service' court form that tells the judge when, where, and how the process was served. The Proof of Service must be filed with the court. By notice or acknowledgment of receipt: This is the most common option. It works well for divorces where the parties agree on most of the terms. Basically, the other side agrees to be served by mail and can sign a court document saying they received the papers. The other side receives the Notice and Acknowledgement and returns it to the server. The server then fills out the Proof of Service, attaching the signed Notice and Acknowledgement to be filed with the court. Mail service: Most documents in a divorce proceeding can be served by mail. A person other than yourself who is over the age of 18 mails the documents to your soon-to-be-ex. They then fill out a Proof of Service informing the court what documents were mailed and when and to what address the mailing was sent. A petition can also be served by mail if your spouse agrees to it. The process is the same as above, though your ex must sign an acknowledgment stating that they received the documents. Substituted service: Substituted service often occurs after multiple attempts to serve someone personally have failed. There are requirements to show that personal service has failed. Attempts must be made at least three times (usually), and they must occur at different locations and different times of the day. Then, you can use a substituted service and leave the papers with someone at your ex-to-be's house or place of work, if they are over 18. For example, if your spouse moved back in with their parents, the server can leave documents with them. The server then must mail a copy of all the documents provided to the recipient's parents or employer and write a 'declaration of due diligence' explaining to the court that all tasks were complete before substitute service was attempted. Finally, once again, Proof of Service is required for the court. This service is deemed complete 10 days after service. Service by publication or posting: This uncommon, outdated method requires the court's permission. Before you try this method, you will need to show the court you have exhausted efforts to locate your ex-to-be and cannot serve them in the other preferred ways. If you do not know where your spouse is, look for them using contacts with family, friends, employers, or roommates. Search the internet (even social media), and consider hiring a background check service. Keep track of your efforts, and apply to order service for publication or posting. Publication means notice of the lawsuit will be published in the newspaper (and will include your names). Posting means the notice will be posted within the courthouse for at least 28 days in a row. The court clerk will usually be able to give you an idea of which newspapers are approved and which forms you should fill out to accomplish this process.

How to Serve Divorce Papers in California

By Mari Tanaka

VP, Special Projects & Family Law Attorney

Last Updated: January 16, 2025

Published: December 12, 2022

Divorce Process, Divorce Planning, Divorce in California, Spouse and Divorce, Serving Divorce Papers

What does it mean to serve divorce papers?
Important timeframes to consider
Documents to serve
Who can serve divorce papers?
Proof of service
5 ways to serve papers in California
Serving a spouse out-of-state
References

You can’t get a divorce in California without legally notifying your spouse. The process you’ll use is called serving.

An adult unidentified with your case (like a friend, the county sheriff, or the postal service) must give your spouse the divorce forms, fill out a different form as proof of the service, and file that completed document with the court.

What does it mean to serve divorce papers?

Filing paperwork with a California court initiates your divorce. Serving papers means formally delivering copies of that paperwork to your spouse.

When you serve papers, you notify your partner that you want to dissolve your marriage or partnership through the California court. You also provide data about your marriage, children or pets, and finances so the court can help determine how to dissolve your affairs and estate.

As stated, you can’t personally give your partner these important documents – even if you're still living together and both know about the divorce plans. Instead, another adult must hand your spouse a copy of the papers you filed. This server then completes a form about the process and gives it to the court, documenting that the formal process is complete.

Important time frames to consider

Some people file a Request For Order (FL-300) form with their petition. This form asks the court to make temporary decisions about things like child custody or spousal support.

If you used this document, you must serve your papers at least 16 court days before the court date. If you didn’t use the FL-300 form, your deadlines may be different. Ask the clerk for clarification.

Your spouse has a full 30 days to file a response to your paperwork. The clock starts ticking when those documents move from your server to your partner. While you're probably eager to move forward with the divorce, you must wait for your partner to respond.

What documents should be served?

California requires a lot of paperwork, and it's important to deliver the right pieces to your server. Remember that a divorce is a legal proceeding, and missing a step could mean delaying your divorce.

All the forms you need to serve divorce papers are available online for no fee. After you serve the papers, you'll have even more forms to fill out. But for now, these are the crucial forms that should be bundled together to initiate divorce proceedings:

FL-100: Petition for divorce

This form begins your divorce process. In it, you'll provide basic information about you, your spouse or domestic partner, and the type of divorce you seek. Prepare to answer questions about why you're dissolving your partnership on this form.

FL-110: Summon your partner

Your spouse must respond to your paperwork, and time frames are tight. This form helps your partner understand the next steps, and it provides some information about what isn't allowed as you process your divorce. For example, your partner can't hide assets or move out of state with your children.

FL-105: Discuss your children

If your children are younger than 18, they're likely to be significantly affected by your divorce. Use this form to tell the court where your children were born, whether they’re involved in other court cases, and other critical pieces of data used in custody cases.

If you don’t share children with your spouse, you can skip this form.

FL-115: Show your work

Your server uses this form to document that the paperwork was delivered legally. The person offers information about when the papers were served, who served them, and where the transfer took place.

You must fill out the top portion of this form, but your server will do the rest.

FL-120: Let the other party respond

This form allows your partner to react to your petition for divorce. You must include a blank copy of this form with the paperwork you serve, so your partner has a chance to work within the court system and move your case forward. Your spouse will fill out this document and file it with the court.

What to do if they do not respond

If a spouse does not respond to mailed divorce papers in California. Here’s what the petitioning spouse can do:

First, confirm that the divorce papers were properly served in accordance with California law. If you used mail service, ensure the papers were sent via certified mail with a return receipt requested, or use a process server to verify delivery.
Wait for the response period to end. This is 30 days from the date of service. If they fail to respond within this period and you can prove you’ve exhausted all methods to try to get them to respond, you can request a default judgment.
Submit a Request to Enter Default (Form FL-165) to the court. Include proof of service of the divorce papers (e.g., Proof of Service of Summons [Form FL-115]) with your request. Once the default is entered, the spouse can no longer file a response without court permission.
Complete the required default forms. Learn about this process here.
Serve the default judgment forms (usually via mail).
Attend a court hearing if required. The court may schedule a hearing to finalize the default judgment, especially if child custody, support, or property division is involved.
Once the judge signs the Judgment (Form FL-180) and the Notice of Entry of Judgment (Form FL-190) is filed, your divorce is finalized.

FL-160: Discuss your property

You’ll have plenty of time to decide how to split up your household. But if you want to get started early, use this form to declare your debts and assets. This property declaration is optional.

Need help understanding your home-related options?

Download Divorce & Your Home, our free three-step home solution with tips and worksheets to help you understand and make the most of your home's equity.

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FL-311: Outline childcare plans

If you share children, custody plans will enter your divorce proceedings. Use this form to describe your vision for your children. If you’d like more time to consider these steps, don’t fill out the form now.

Visit this page: California Divorce Forms

Choosing a server: Who can serve divorce papers?

California requires a petitioning party (the person who files original paperwork) to officially hand over documents through a formal serving process.

You cannot serve documents yourself, and you can’t skip any official step (like filing proof of service). If you don’t serve papers properly, the court will not move forward with your case.

As the National Association of Professional Process Servers points out, using an unaffiliated third party helps to protect your partner’s right to due process, as stated in the Constitution. Since you’re a party to the case, you might have a vested interest in keeping some details private. By using an outsider, you demonstrate to the court that you’re being as open and transparent about the case as possible.

A process server is an adult (at least 18 years old) unconnected to your case. That could be a business, the sheriff, a friend, or the mail. We’ll go into these options below.

Proof of service

The Proof of Service of Summons (Form FL-115) is a critical document in a California divorce process that confirms your spouse has been officially served with divorce papers. Here's a summary:

Purpose: It demonstrates to the court that your spouse received the required documents, including the Summons (Form FL-110) and Petition (Form FL-100).
Who completes it: The form must be filled out and signed by the person who served the papers, not the petitioner (you). The server can be a third party over the age of 18, like a friend, family member, or professional process server.
Service methods: (1) Personal service (handed directly to your spouse); (2) Substituted service (papers are left with someone at your spouse’s home or workplace and followed up with a mailed copy); (3) Mail (only valid if your spouse signs a Notice and Acknowledgment of Receipt).
Details included: Date, time, and location of service. Method of delivery. Name of the person served (your spouse).
Filing with the court: After the server completes the form, it must be signed and filed with the court to document successful service.

5 ways to serve divorce papers in California

Download all the forms you need, fill them out, and make two copies of the documents. Take this bundle of papers to a court clerk, and pay a filing fee of up to $450 to file the documents.

Then, you're ready to serve your partner with those papers.

Here are your options:

1. Use a trusted partner

Ask someone older than 18 with no claim to your case to serve your partner with papers. You can ask a family member (like a sibling) to help, but remember to leave your children out of this conversation. They are parties to your case, so they can't serve papers for you.

2. Ask the county sheriff

In almost all California counties, the sheriff's department will serve papers for you. Officers charge a fee for this service, and the cost can vary from county to county. But officials like this can serve your documents professionally and quickly.

3. Hire a process server

More than 300 people are registered in California with the National Association of Professional Process Servers. These people are experts at both delivering paperwork and filing required documents. Their fees can vary.

4. Use the mail

If you know your spouse’s address, you can serve divorce papers by mail using the following process:

1. Prepare the documents required documents for service:

Summons (Form FL-110)
Petition (Form FL-100)
Any additional local forms or notices required by your court.

2. Choose a server

The server must be a neutral third party, at least 18 years old, and not part of the case (e.g., a friend, family member, or professional process server).

3. Mail the papers

The server must send the documents via First-Class Mail with a Notice and Acknowledgment of Receipt (Form FL-117) included. The Notice and Acknowledgment of Receipt must be filled out but not signed.

4. Wait for acknowledgment

Your spouse must sign and return Form FL-117 to the server within 20 days. Once received, the server completes the Proof of Service of Summons (Form FL-115) and attaches the signed Form FL-117 as proof.

5. File the Proof of Service

File the completed Form FL-115 with the court to confirm proper service.

What if I don’t know my spouse’s address?

If your spouse’s address is unknown, you must take additional steps to demonstrate you’ve attempted to locate them before proceeding with alternative service.

1. Conduct a search (due diligence): Contact friends, family, or employers. Use social media, online directories, or search engines to local them online. If you have no luck, consider hiring a private investigator.

2. File a Request for Service by publication or posting: If you cannot find your spouse after due diligence, file a Request to Dispense with Notice (Form FL-115) or Request for Order (Form FL-300), depending on your court’s requirements. Attach a Declaration of Diligent Search explaining your efforts to locate your spouse. You must prove you’ve tried everything.

3. Serve by publication or posting: If approved, the court will allow you to serve by publishing a notice in a local newspaper or posting at the courthouse. This old-school approach is only used when you have no other options. Follow the court’s instructions for how long the notice must run (usually 4 consecutive weeks).

4. File proof of publication or posting: Obtain an affidavit from the newspaper or courthouse to confirm the notice was posted or published. File this with the court as proof of service.

Common mistakes to avoid if serving your spouse via mail

Serving divorce papers via mail in California requires strict adherence to legal procedures. Here are the key pitfalls to avoid:

Serving the papers yourself. Always use a neutral third party who is at least 18 years old and not involved in the case.
Forgetting to include mandatory documents like the Notice and Acknowledgment of Receipt (Form FL-117) with the Summons and Petition. Double-check that all required forms are included in the mailing.
Using methods like certified mail without a return receipt or failing to use First-Class Mail as required. Ensure the papers are sent via First-Class Mail, including Form FL-117 for acknowledgment.
Proceeding without receiving the signed Form FL-117 from your spouse. Wait for your spouse to sign and return Form FL-117 within 20 days. If they fail to respond, consider other service methods, such as personal service.
Filing Proof of Service of Summons (Form FL-115) with missing or incorrect information.
Assuming service is valid even if your spouse does not return the acknowledgment form. If the acknowledgment form isn’t signed and returned, the service is invalid. You may need to use personal service or request service by publication or posting.
Overlooking additional requirements set by your local court. Check with your court for specific forms, deadlines, or rules about serving papers.
Skipping the due diligence process when your spouse’s address is unknown.
Failing to file Form FL-115 promptly after service.
Trying to handle complex service issues alone. Consult with your Hello Divorce account coordinator, an attorney, or a legal aid service if you encounter challenges or uncertainties.

5. Serve by publication

If you’re not exactly sure where your spouse is but are aware of the general area, you can use newspapers to serve papers. This is a very old-fashioned method of serving papers if nothing else works. You’ll pay the publishing fees, and you must share this document once per week for four weeks.

If you use this route, you must use two additional forms (FL-980 and FL-982) to prove your work.

Serving a spouse living out of state

Some couples put many miles between them before they divorce. If your spouse no longer lives in California, consider alternate ways to serve divorce papers. The rules can shift depending on where the person you need to serve lives

Here’s the step-by-step process:

1. Prepare the required documents. Gather the necessary forms, including:

Summons (Form FL-110)
Petition (Form FL-100)
Any additional documents required by your local court or for your specific case.

2. Select an approved method of service.

3. Follow the laws of the state where your spouse resides. Some states have specific requirements for serving legal documents.

4. After service is completed, the server must fill out and sign a Proof of Service of Summons (Form FL-115) detailing how, when, and where the service occurred. File this form with the California court handling your case to document valid service.

Tips for smooth service

If serving by personal service or process server, work with professionals familiar with the laws of your spouse’s state.
Keep detailed records of all attempts to serve your spouse, especially if you may need to request alternative service.
Plan for delays. Serving out-of-state can take longer due to logistical challenges and differing legal requirements.

If your partner lives in another country, the rules are more complicated. Sometimes, country-to-country rules dictate your next steps. It's best to work with a legal expert in cases like this. If you need additional help, please schedule a call with a member of our team.

Watch: Comprehensive Guide to Serving Your Spouse in California Divorce

References

Marriage and Divorce. (March 2022). Centers for Disease Control and Prevention.
Serve Your Divorce Papers. Judicial Branch of California.
Divorce Forms. Judicial Branch of California.
File Your Divorce Petition and Summons. Judicial Branch of California.
Process Servers in California. National Association of Professional Process Servers.
Serve by Notice and Acknowledgement of Receipt. Judicial Branch of California.
Ask to Serve by Publication or Posting. Judicial Branch of California.
Service Rules for Special Situations. Judicial Branch of California.
Starting Your Divorce. Superior Court of California, County of Contra Costa.
Service of Process/Proof of Service. Superior Court of California, County of San Diego.
What Is a Process Server, and Why Do I Need to Hire One? National Association of Professional Process Servers.

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