California Court Forms · Family Law

FL-100: Petition—Marriage/Domestic Partnership

The petition that starts a divorce, legal separation or annulment case. Understand its three pages before reviewing your papers for filing.

Revised January 1, 2020 · 3 pages · FL-110 · family law summons

Not legal advice. This page explains what the form asks; it does not tell you what to put in your case.

What it is

The opening petition

FL-100 identifies the relationship and the issues the petitioner wants included in the judgment. Filing it starts a case; it does not itself end a marriage or domestic partnership.

When it is used

Part of a larger packet

California Courts lists FL-100 and FL-110 for starting an ordinary divorce. Its instructions identify FL-105 when the spouses have minor children together and explain that local forms may also be required. Joint petitions and summary dissolution use different instructions.

Section by section

What each part asks

Use the current official form and its instructions. The descriptions below identify the questions without choosing answers for your situation.

Page 1 · Relationship and family

Caption and petition type

Contact details, court, petitioner and respondent, and the type of proceeding.

1–3 · Background

Legal relationship, residence requirements and dates of marriage or registration and separation.

4 · Minor children

Children’s names, birth dates and ages, plus related declarations and attachments.

Page 2 · Issues for the court

5 · Legal grounds

The stated basis for the requested proceeding.

6–8 · Custody and support

Requested custody, parenting time, child support and spousal or partner support.

9 · Separate property

Assets and debts described as separate property, or a referenced property declaration or attachment.

Page 3 · Property and declaration

10 · Community property

Community and quasi-community assets and debts and any referenced list.

11 · Other requests

Attorney fees, a former name and other requested relief.

12 · Acknowledgment and signature

Acknowledgment of the summons’s restraining orders and a signed, dated declaration.

Before you file

Common filing problems to check

These checks come from the official form and instructions. They are not a ranking of rejection reasons; the court decides whether a filing meets its requirements.

  • An unsigned or undated petition.
  • A referenced property list or other attachment is missing from the packet.
  • The FL-105 identified by the official instructions for minor children is absent.
  • Local forms have not been checked against the filing court’s instructions.

E-file it

How to e-file FL-100 with Legal Hub Group

Legal Hub Group is a certified e-filing service provider for California courts. Availability depends on the live court, case type, document type and whether the case is new or existing.

1

Confirm the court

Check the current court and case-type list. A court must support the particular filing; this guide does not make every form available in every county.

2

Upload and check

Upload the finished papers and their attachments. Lexary checks them for common filing problems. Review the documents and the results before continuing.

3

Review the filing and fees

Confirm the case, document types and payment choice. Review every fee shown before submitting.

4

Submit and track the answer

The court reviews the filing. Keep the court’s acceptance and returned copy, or read its rejection notice before deciding what to do next.

$14.99 Legal Hub Group fee per e-filing, plus applicable court and court-system fees. Each fee is shown before submitting.

E-service is included free where available. No subscription. E-filing and service of opening papers are separate requirements.

Questions

FL-100 questions

Does filing FL-100 finish the divorce?

No. It starts the case and identifies requested issues. Service, disclosures and the later judgment process are separate steps.

Is FL-100 the summons?

No. The family law summons is FL-110. SUM-100 is a different summons used in civil cases.

Will this page tell me which property or support boxes to choose?

No. Those choices can affect legal rights. This page describes the form; a lawyer or court self-help center can explain the options for your situation.

Not legal advice. This page explains public filing information. It does not tell you what to put in your own case. Legal Hub Group is a certified e-filing service provider for California courts, not a law firm.

Information checked as of October 2026. Rules, form revisions and provider prices can change. The court decides whether to accept a filing.

FL-100 form revision: January 1, 2020.