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California Child Custody Agreement

Agreeing to joint custody in California shifts the burden of proof, but only within limits the statute sets out.

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Introduction

A California Child Custody Agreement is a written arrangement between two parents covering legal custody, physical custody, and a parenting time schedule. California is one of a small group of states where the act of agreeing has a defined legal consequence. Under Family Code section 3080 there is a presumption, affecting the burden of proof, that joint custody is in the best interest of a minor child where the parents have agreed to joint custody or so agree in open court. That is a real advantage, and it is also narrower than it first sounds. It attaches to an agreement for joint custody specifically rather than to any parenting arrangement, and the statute makes it expressly subject to section 3011, the best-interest provision that includes domestic violence. California also leaves more to the parents than most states: it does not require a parenting plan at all, and its move-away notice duty applies only if an order says so.

Key Things to Know

  1. 1

    Agreeing to joint custody changes the burden of proof. Family Code section 3080 creates a presumption that joint custody is in the child's best interest where the parents have agreed to it, either in a written stipulation or in open court. Outside that agreement, section 3040 states there is neither a preference nor a presumption for or against joint legal custody, joint physical custody, or sole custody.

  2. 2

    The presumption is not unconditional. Section 3080 makes it expressly subject to section 3011, the best-interest provision. Agreeing to joint custody improves your position; it does not guarantee the outcome, and the court retains the duty to decide what is in the child's best interest.

  3. 3

    The presumption covers joint custody only. Section 3002 defines joint custody as joint physical custody together with joint legal custody. An agreement for some other arrangement, such as sole physical custody with joint legal custody, is perfectly valid but does not attract the section 3080 presumption.

  4. 4

    California's statutory factor list is short. Section 3011 directs the court to consider a small number of specified matters among any other factors it finds relevant, so it operates as a floor rather than a closed checklist. A long agreement that addresses practical detail is more useful here than one written to satisfy a list.

  5. 5

    There is no parenting plan requirement. Section 3040 leaves it to the court's discretion whether to require an implementation plan. What is prescribed is the contents of the resulting order, so the practical target when drafting is the order the court will sign rather than a statutory plan format.

  6. 6

    Move-away notice is opt-in. Section 3024 provides that the court may specify that a parent notify the other before changing the child's residence for more than 30 days. The trigger is duration, not distance, and there is no automatic statewide notice duty. Whether your family has one depends on what your own agreement and order say, which makes this worth addressing expressly.

  7. 7

    Domestic violence changes the analysis substantially. Family Code section 3044 creates a rebuttable presumption against awarding sole or joint custody to a person found to have perpetrated domestic violence within the previous five years. The version operative from January 2026 sets the rebuttal standard at a preponderance of the evidence. If there has been abuse or a protective order, this is a situation for a lawyer rather than a form.

Key decisions before you file

Before you file a Child Custody Agreement in California, a few decisions shape the document: which option to choose and what each one means. The Child Custody Agreement guide walks through them.

Open the Child Custody Agreement guide

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California Child Custody Agreement (Compact State Terms)

Use these terms together with the national Child Custody Agreement template. They address requirements specific to California law and replace the corresponding general provisions.

  1. GOVERNING LAW This Agreement is governed by the California Family Code. The parties acknowledge that all provisions concerning the child remain subject to the continuing jurisdiction of the court.

  2. JOINT CUSTODY ELECTION The parties [DO / DO NOT] agree to joint custody as defined by Family Code section 3002, meaning joint physical custody together with joint legal custody. Where the parties so agree, they acknowledge the presumption under Family Code section 3080, affecting the burden of proof, that joint custody is in the best interest of the child, and further acknowledge that this presumption is expressly subject to Family Code section 3011.

  3. LEGAL CUSTODY Legal custody shall be [JOINT / SOLE TO ______]. Decisions regarding [EDUCATION], [NON-EMERGENCY MEDICAL AND DENTAL CARE], [MENTAL HEALTH TREATMENT], and [RELIGIOUS UPBRINGING] shall be made [JOINTLY / BY ______].

  4. PHYSICAL CUSTODY AND PARENTING TIME Physical custody shall be [JOINT / SOLE TO ______]. The child shall reside with [PARENT] during [SCHEDULE] and with [PARENT] during [SCHEDULE]. Exchanges shall occur at [LOCATION] and shall be specific as to time, day, place, and manner of transfer.

  5. RESIDENCE CHANGE NOTICE Because Family Code section 3024 makes notice a matter the court may specify rather than an automatic duty, the parties agree that a parent planning to change the residence of the child for more than 30 days shall give the other parent written notice at least [45] days in advance, stating the proposed address and the date of the intended move.

  6. MEDIATION OF DISPUTES The parties acknowledge that contested custody and visitation issues are set for mediation under Family Code section 3170 before hearing, and agree to participate in good faith before applying to the court on any dispute arising under this Agreement.

  7. DOMESTIC VIOLENCE ACKNOWLEDGMENT The parties acknowledge the rebuttable presumption under Family Code section 3044 against an award of sole or joint physical or legal custody to a person found to have perpetrated domestic violence, and that nothing in this Agreement displaces that presumption or the court's duty to apply it.

  8. ENTRY AS A COURT ORDER The parties shall submit this Agreement to the court as a stipulation for entry as an order. The parties acknowledge that until entered it is not enforceable as a custody order, and that the court may decline to enter terms it finds are not in the best interest of the child.

  9. MODIFICATION Any modification of custody or parenting time shall be made by stipulation submitted to the court or by application to the court. A private agreement between the parties does not alter an existing order.

California Requirements for Child Custody Agreement

State the joint custody election for Fam. Code 3080

Record expressly whether the parents agree to joint custody. The section 3080 presumption attaches only to an agreement for joint custody, so an unclear election forfeits the benefit.

Acknowledge Fam. Code 3080 is subject to section 3011

The presumption is expressly subject to the best-interest provision. The agreement should not be drafted as though agreement alone determines the outcome.

Use the Fam. Code 3002 definition of joint custody

Joint custody means joint physical custody together with joint legal custody. Where the parents intend a different arrangement, say so plainly rather than using the term loosely.

Allocate legal custody and decision-making

Specify whether legal custody is joint or sole and identify who decides on education, non-emergency medical and dental care, mental health treatment, and religious upbringing.

Make the schedule specific as to time, day, place, and manner

Set out the residential schedule and exchange arrangements with enough precision to be entered and enforced as an order, including holidays and school breaks.

Address residence change notice under Fam. Code 3024

Notice is something the court may specify rather than an automatic duty, and the trigger is a change of residence exceeding 30 days with no distance threshold. Write the notice obligation into the agreement if the parents want one.

Preserve the Fam. Code 3044 domestic violence presumption

The rebuttable presumption against custody to a perpetrator of domestic violence cannot be waived by agreement. The rebuttal standard is a preponderance of the evidence under the version operative from January 2026.

Note mediation under Fam. Code 3170

Contested custody and visitation issues are set for mediation before hearing. Including a good-faith mediation step for future disputes aligns the agreement with how California handles disagreement.

Submit as a stipulation for entry as an order

Include an undertaking to submit the agreement to the court for entry, and record that it is not enforceable as a custody order until entered.

Frequently Asked Questions

Yes, and in a specific way. Family Code section 3080 creates a presumption affecting the burden of proof that joint custody is in the child's best interest where the parents have agreed to it. Without such an agreement, section 3040 provides that there is neither a preference nor a presumption for or against joint or sole custody.

No. Section 3080 makes the presumption expressly subject to section 3011, the best-interest provision. It shifts the burden of proof rather than removing the court's judgment, and a court that finds an arrangement is not in the child's best interest can decline to enter it.

Section 3002 defines joint custody as joint physical custody together with joint legal custody. That matters for the presumption: an agreement for a different arrangement, such as sole physical custody with joint legal custody, is valid and common but does not attract the section 3080 presumption.

Not as a statutory requirement. Section 3040 leaves it to the court's discretion whether to require an implementation plan. What the law does prescribe is the contents of the custody order itself, so the practical goal is a stipulation detailed enough to become a workable order.

Yes. Parents can agree privately, but the arrangement becomes enforceable only once it is submitted to the court and entered as an order. Until then it is not enforceable as a custody order, and neither parent can be held in contempt for departing from it.

Only if an order requires it. Section 3024 provides that the court may specify a notice requirement, so there is no automatic statewide duty. The statutory trigger is a change of residence for more than 30 days, and it is based on duration rather than any distance threshold. Because it is optional by default, it is worth writing into the agreement.

Contested custody and visitation matters are set for mediation under Family Code section 3170 before a hearing.

Section 3011 identifies a small number of matters the court considers among any other factors it finds relevant, so it is a floor rather than a closed list. California does not provide the long enumerated checklist some other states use, which puts more weight on how clearly the agreement itself sets out the arrangement.

Section 3044 creates a rebuttable presumption against awarding sole or joint physical or legal custody to a person found to have perpetrated domestic violence within the previous five years. The version operative from January 2026 sets the rebuttal standard at a preponderance of the evidence. This is an area to raise with a lawyer rather than resolve on a form.

Once entered as an order, changes are made by a further stipulation submitted to the court or by application to the court. A private agreement between the parents, even in writing, does not alter an existing custody order.