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Child custody in California: laws, types, and how courts decide
California courts make every custody decision based on the best interests of the child—not either parent's preferences. Two major 2026 updates have changed how courts weigh child safety: Piqui's Law (SB 331) now requires mandatory judicial training in domestic violence and child abuse, and SB 343 has overhauled the child support formula that often runs alongside custody orders. This guide explains what to expect.
Quick answer
California law requires every custody decision to serve the best interests of the child. Courts consider the child's health, safety, and welfare; each parent's history of caregiving; the amount of contact each parent has had; and any history of domestic violence or substance abuse. Neither parent starts with an advantage based on gender. Most families end up with joint legal custody. Physical custody arrangements vary widely by family and are worked out in a parenting plan.
Two custody types
Legal & physical
Either or both can be joint or sole
Child's preference
Age 14+
Court must consider their stated preference
Mediation required?
Yes, in most counties
Before a judge will hold a contested custody hearing
Piqui's Law
SB 331 (2024)
Mandates judicial training; bans forced reunification camps
Child support update
SB 343 (2024)
Updated K-factor formula; low-income threshold raised to ~$2,900/mo
Modification standard
Changed circumstances
Required to reopen a final custody order
Legal custody vs. physical custody in California
California recognizes two distinct types of custody, and both can be awarded as joint or sole. Understanding the difference matters a great deal for how day-to-day parenting actually works after a divorce.
Legal custody
Legal custody is the right to make major decisions about a child's life: where they go to school, which doctors they see, what religion they practice, and what mental health services they receive. Joint legal custody means both parents share this decision-making authority and must consult each other on significant choices. Sole legal custody gives that authority to one parent exclusively. California courts award joint legal custody in most cases where both parents are fit and involved.
Physical custody
Physical custody determines where the child lives and who provides day-to-day care. Joint physical custody means the child spends significant time in both homes, though not necessarily a 50/50 split. Sole physical custody means the child lives primarily with one parent, who is the primary custodial parent, while the other parent has a court-ordered visitation schedule. The parent with less time is commonly called the noncustodial parent.
How the two types can be combined
Legal and physical custody operate independently. A family can have joint legal custody with one parent having primary physical custody. Another family might have equal shared physical custody with joint legal custody. The arrangement depends on the specific circumstances of the children and both parents. There is no single correct structure.
| Custody type | Joint | Sole |
|---|---|---|
| Legal | Both parents share major decisions | One parent decides; other may have input rights |
| Physical | Child lives substantially in both homes | Child lives primarily with one parent; other has visitation |
| Common combination | Joint legal + one parent primary physical — most frequent outcome in California | |
How California courts decide custody: the best interests standard
Every custody decision in California must be grounded in the best interests of the child. This is the governing legal standard, and it is intentionally broad so judges can account for the specific dynamics of each family. No single factor automatically determines the outcome.
Courts look at the child's health, safety, and welfare first. From there, they consider factors including the amount and quality of contact the child has had with each parent, each parent's history of caregiving, work schedules and availability, the child's adjustment to their home, school, and community, and the distance between each parent's residence. Any history of domestic violence or substance abuse is taken seriously and can significantly affect the outcome.
California courts do not favor mothers over fathers. The focus is entirely on which arrangement best supports the child's wellbeing, and courts actively look for ways to help children maintain loving relationships with both parents whenever safety allows.
Can a child choose which parent to live with in California?
Yes, but with important limits. If a child is 14 or older, the court is required to hear their preference and give it serious weight. For children under 14, the judge has discretion to consider their preference based on the child's maturity and whether their stated preference appears genuine rather than coached. Ultimately, the final decision always rests with the court, even if the child has clearly expressed a preference.
The role of parental cooperation
California courts pay attention to which parent is more willing to support the child's relationship with the other parent. Documented parental alienation, refusal to communicate, or interference with the other parent's timeshare can work against you in court, even if you have historically been the primary caregiver. Taking the high road is not just good parenting; it is also a strategic legal choice.
When domestic violence is part of the picture
California law creates a rebuttable presumption against granting custody to a parent with a history of domestic violence. This presumption applies when there has been a finding of abuse within the past five years.
If you or your children have experienced domestic violence, contact a licensed family law attorney before agreeing to any custody arrangement. The free 15-minute call with a Hello Divorce account coordinator can point you toward the right resources for your situation.
If parents cannot agree on custody and a court must decide, a judge will typically order parents to participate in child custody recommending counseling (mediation) before scheduling a hearing. Most counties require this step. If mediation does not produce agreement, the counselor may issue a written recommendation, and the case goes before a judge.
Parenting plans and timeshare schedules
A parenting plan is the written document that spells out where the children will live, how time is divided, how holidays are handled, how parents will communicate, and how disputes will be resolved. Once signed by both parents and approved by the court, it becomes a court order.
Parents who can agree on a parenting plan without court intervention are in a much stronger position. You keep control of the decisions, you avoid the cost and stress of litigation, and you are far more likely to be satisfied with the outcome than if a judge decides for you. Our guide to creating a co-parenting plan in California walks through every component in detail.
Common timeshare schedules
California does not have a default custody schedule. What works for one family may not work for another, and the goal is always to minimize disruption to the child's school, activities, and friendships. Common arrangements include a 2-2-3 rotation (alternating shorter weeks), a 5-2-2-5 schedule, alternating full weeks, and variations that account for parental work schedules or the child's age.
Why timeshare affects child support
In California, the percentage of time each parent spends with the children is one of the two biggest factors in calculating child support. More timeshare for the higher-earning parent generally lowers their support obligation. This makes the custody schedule and child support deeply interconnected. Use our California parenting time calculator to see how different schedules affect the numbers, and our California child support calculator to estimate your actual obligation.
Key forms for child custody in California
If you have minor children and are filing for divorce, you will need to complete and file the Declaration Under the Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA, Form FL-105) along with your initial petition. If you and your co-parent already have an agreed parenting plan, you can use the Child Custody and Visitation Application Attachment (FL-311) to submit it to the court. For an emergency or temporary custody order, the Request for Order (FL-300) is the correct form. A full list of California divorce forms is available in our California divorce forms guide.
2026 legal updates affecting child custody in California
Two recent legislative changes are directly shaping how California family courts handle custody matters in 2026. Both were driven by real families whose experiences exposed gaps in the existing system.
Piqui's Law: SB 331
Piqui's Law (SB 331), which took effect January 1, 2024, is named after Aramazd "Piqui" Andressian Jr., a five-year-old who was killed by his father during a custody dispute after a family court judge denied his mother's request for supervised visitation. The law does two significant things.
First, it mandates that the Judicial Council establish comprehensive training programs for judges, referees, commissioners, custody evaluators, mediators, and child custody recommending counselors on domestic violence, coercive control, child sexual abuse, and child safety. Second, it prohibits courts from ordering children into so-called "reunification camps" or "therapeutic vacation" programs that, as a condition of participation, involve transferring physical or legal custody, issuing no-contact orders, or using private youth transporters. These programs had been criticized as traumatizing and largely unregulated.
What this means for your case
If domestic violence, coercive control, or child abuse is part of your custody dispute, Piqui's Law means the judges and court-appointed professionals involved in your case are now required to have formal, ongoing training in recognizing these dynamics. Document everything carefully, and consult an attorney before accepting any temporary custody arrangement.
SB 343: Updated child support K-factor
Senate Bill 343, which took effect September 1, 2024, overhauled California's child support calculation formula in ways that directly affect any family setting a custody and support arrangement. The K-factor (the multiplier used in the guideline support formula) has been updated to reflect today's wage levels. Key changes include raising the low-income adjustment threshold to approximately $2,900 per month in net disposable income, tying future adjustments to the state minimum wage rather than the Consumer Price Index, and making the proportional sharing of add-on expenses mandatory based on each parent's relative income.
For families currently under an existing support order, SB 343's passage likely constitutes a significant change of circumstances, which is the legal standard needed to request a modification. If you believe your current support amount no longer reflects the updated guidelines, our guide to California child support add-ons explains how the new proportional sharing rules apply to childcare, medical costs, and extracurricular activities.
Modifying a custody order after divorce
Custody orders can be changed after the divorce is final, but they are not easy to change without a good reason. California requires a parent seeking modification to show a significant change of circumstances since the existing order was made. Courts set a high bar for this intentionally, to protect children from repeated disruption.
Qualifying changes of circumstances include a parent's relocation that substantially affects the existing timeshare, a significant change in a child's needs, a parent's remarriage or a new partner moving into the home (in some cases), documented concerns about the child's safety or welfare, or either parent's substantial change in work schedule. The court will also apply the best interests standard again when evaluating any modification request. If you and your co-parent agree on a modification, you can submit a stipulation to the court without a hearing. If you disagree, you will need to file a Request for Order (FL-300) and go through mediation before a judge will hear the matter.
You don't have to figure out custody alone
Whether you're building a co-parenting plan from scratch or navigating a complicated custody dispute, Hello Divorce can connect you with the right support—from online tools to on-demand mediators and family law attorneys.
Schedule your free 15-minute callFrequently asked questions about child custody in California
Does California favor mothers over fathers in custody cases?
No. California family courts do not apply any presumption based on gender. The governing standard is the best interests of the child, and courts consider each parent's involvement, caregiving history, availability, and ability to meet the child's needs—not who the mother or father is. Fathers have the same rights as mothers in custody proceedings.
What is the difference between legal custody and physical custody?
Legal custody is the right to make major decisions about a child's health, education, and welfare. Physical custody refers to where the child lives and who provides day-to-day care. Either type can be joint (shared by both parents) or sole (held by one parent). Many California families have joint legal custody with one parent designated as the primary physical custodian, while the other has a substantial visitation schedule.
Do we have to go to mediation before a custody hearing in California?
In most California counties, yes. When parents cannot agree on custody or visitation, the court will send them to child custody recommending counseling (sometimes called mediation) before a judge will hold a contested hearing. The process is designed to help parents reach an agreement without litigation. If they still cannot agree, the counselor may provide a written recommendation that the judge considers when making a ruling.
What is Piqui's Law and how does it affect custody cases in California?
Piqui's Law (SB 331), effective January 1, 2024, requires the Judicial Council to establish mandatory training for judges, referees, commissioners, custody evaluators, mediators, and other professionals who handle domestic violence and child custody matters. The training must cover topics including coercive control, child sexual abuse, and domestic violence dynamics. The law also prohibits courts from ordering children into reunification camp programs that require custody transfers or no-contact orders as a condition of participation.
Can a California custody order be changed after the divorce is final?
Yes, but only if you can show a significant change of circumstances since the current order was made. Examples include a parent's relocation, a major change in the child's needs, documented safety concerns, or a substantial shift in either parent's availability. If both parents agree on the modification, it can be submitted to the court as a stipulation. If they disagree, a Request for Order (FL-300) and a mediation session are required before the court will hear the matter.
How does the timeshare schedule affect child support in California?
The percentage of time each parent spends with the children is one of the two largest factors in California's guideline child support formula. More timeshare for the higher-earning parent generally reduces their support obligation. Under the updated formula introduced by SB 343 (effective September 2024), add-on expenses such as childcare and uninsured medical costs are now split proportionally based on each parent's net income rather than defaulting to a 50/50 split.
References & further reading
Sources cited in this article and recommended for further reading.
- 1. California Legislature. "SB-331 Child custody: child abuse and safety (Piqui's Law)" — Full bill text establishing mandatory judicial training and prohibiting forced reunification programs in custody matters. California Legislature, 2023. Accessed March 2026.
- 2. California Legislature. "SB-343 Child support" — Full bill text overhauling the California guideline child support formula, updating the K-factor, and mandating proportional sharing of add-on expenses. California Legislature, 2023 (effective September 1, 2024). Accessed March 2026.
- 3. California Courts Self-Help Center. "Divorce in California" — Official guidance on the California divorce process including custody forms and procedures. Judicial Council of California. Accessed March 2026.
- 4. Hello Divorce. "Custody and Visitation Plans in California" — Practical guide to building a parenting plan, enforcing custody orders, and working with a mediator. hellodivorce.com. Accessed March 2026.
- 5. Hello Divorce. "How to Create a Co-Parenting Plan in California" — Step-by-step guidance on designing a parenting plan that works for your children and your schedule. hellodivorce.com. Accessed March 2026.