Custody in California.
The starting point the law actually sets, what the judge has to weigh, and the deadlines that catch people out.
See a different stateCalifornia
California has a joint-custody presumption, and almost everyone describes it wrongly. Family Code § 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 at a hearing for the purpose of determining the custody of the minor child.” Read the condition at the end. If you have already agreed, the law backs you up. If you are fighting about it — which is when people go looking for a presumption — it does not apply. What governs a contested case instead is § 3040, which sets an order of preference rather than a starting split: custody goes “to both parents jointly … or to either parent,” and in choosing between parents the court must consider “which parent is more likely to allow the child frequent and continuing contact with the noncustodial parent.” Nothing there presumes equal time. Two things § 3040 expressly bars a judge from weighing: a parent’s immigration status, and their sex, gender identity, gender expression or sexual orientation.
Use the state’s own words
California says "custody" and splits it into "legal custody" and "physical custody," each of which can be "joint" or "sole." Time with the children is called "visitation," which the courts now also call "parenting time." The written arrangement is a "parenting plan." The court's own custody service is "Family Court Services"; in many counties the person you meet there is a "child custody recommending counselor," and the process is called "child custody recommending counseling" rather than mediation.
How California decides
Decisions against where the child lives
The California Courts' official self-help material states it plainly: "Legal custody: who makes important decisions for your children (like health care, education, welfare)." "Physical custody: who your children live with most of the time." Either can be shared (joint) or given to one parent (sole), and they are decided separately — you can have joint legal custody while the children live mostly with one parent. The same page notes that until there is a court order, both parents have equal rights and neither parent has a greater claim to have the children in their care.
What the judge must weigh
Family Code § 3011 is the list, and it is shorter and blunter than most states’. In deciding best interests the court “shall, among any other factors it finds relevant … consider all of the following”: (1) the health, safety and welfare of the child; (2) a history of abuse by one parent or any other person seeking custody — against the child, against the other parent, or against a partner or cohabitant; (3) the nature and amount of contact with both parents; and (4) the habitual or continual illegal use of controlled substances, or habitual or continual abuse of alcohol or of prescribed controlled substances, by either parent. Two practical points buried in the section. Before acting on allegations of abuse or of substance abuse, the court may require independent corroboration — police reports, child protective services, medical or rehabilitation records, or reports from a domestic violence or sexual assault organization. And where such allegations have been raised and the court nevertheless orders custody or unsupervised visitation, it has to account for that decision. Since January 2024, § 3040(d) adds that where the effects of a parent’s mental illness are a factor, the court must give that parent a list of local mental health resources and state its reasons in writing or on the record.
What the child wants
Family Code § 3042, and there is a real line at fourteen. The general rule in subsection (a): if a child “is of sufficient age and capacity to reason so as to form an intelligent preference,” the court “shall consider, and give due weight to” their wishes. Then subsection (c): if the child “is 14 years of age or older and wishes to address the court … the child shall be permitted to do so, unless the court determines that doing so is not in the child’s best interest, in which case, the court shall state its reasons for that finding on the record.” So a fourteen-year-old has a right to speak that a judge has to justify refusing, on the record. A younger child is not shut out either — subsection (d) says this does not prevent a child under fourteen from addressing the court if the court finds it appropriate. Being heard is not the same as being obeyed: the court weighs it alongside everything in § 3011.
Where there has been violence or abuse
This is one of the strongest provisions in the country, and the details matter. Family Code § 3044(a): on a finding that a party seeking custody “has perpetrated domestic violence within the previous five years” against the other party, against the child, against the child’s siblings, or against certain partners or household members, “there is a rebuttable presumption that an award of sole or joint physical or legal custody … to a person who has perpetrated domestic violence is detrimental to the best interest of the child.” Note the reach: it covers joint custody and legal custody, not only physical custody. § 3044(a) also states that the presumption “may only be rebutted by a preponderance of the evidence,” and § 3044(b) sets out what the court must find before it can be overcome. The five-year window is the part people miss — it runs from the conduct, not from the filing.
The paperwork and the people
The parenting plan
Yes in practice — a custody case ends in a parenting plan. The official self-help page opens with "When you separate from your child's other parent, you need a parenting plan," and California Rule of Court 5.210(e)(8)(A) requires court-connected mediation to conclude with "a written parenting plan summarizing the parties' agreement or mediator's recommendation." Rule 5.210(c)(2) defines a parenting plan as a plan describing how the parties will share and divide decision making and caretaking. The Judicial Council information sheet the courts point parents to is "What are Visitation or Parenting Time Orders? (form FL-311-INFO)." Rule 5.210: https://www.courts.ca.gov/cms/rules/index.cfm?title=five&linkid=rule5_210
Mediation
Required, not optional, and it comes before a judge hears the dispute. Family Code § 3170(a): where it appears on the face of the pleading that custody or visitation is contested, “the court shall set the contested issues for mediation.” Domestic violence cases are handled by Family Court Services under a separate written protocol approved by the Judicial Council, so raising abuse does not simply put you in the same room. Counties may also offer parent education programs and other services alongside it.
If the court appoints someone to look into it
California Rule of Court 5.220, adopted under Family Code §§ 211 and 3117, governs court-ordered child custody evaluations. It applies to "both court-connected and private child custody evaluators appointed under Family Code section 3111, Family Code section 3118, Evidence Code section 730, or chapter 15 (commencing with section 2032.010) of title 4, part 4 of the Code of Civil Procedure." A "child custody evaluator" is a court-appointed investigator as defined in Family Code § 3110. Evaluations can be full or partial — the court can limit them in time or scope, which usually costs less. California also has rules for appointing a lawyer for the child (rule 5.240) and for that lawyer's compensation (rule 5.241). We could not confirm from an official source how evaluator fees are allocated between the parents; ask your court's Family Court Services office, since it varies by county and by whether the evaluator is court-connected or private. https://www.courts.ca.gov/cms/rules/index.cfm?title=five&linkid=rule5_220
Changing the order
For joint custody, Family Code § 3087: an order “may be modified or terminated upon the petition of one or both parents or on the court’s own motion if it is shown that the best interest of the child requires modification or termination.” And a protection worth knowing if you are the parent resisting a change: “If either parent opposes the modification or termination order, the court shall state in its decision the reasons for modification or termination of the joint custody order.” A contested change has to come with reasons.
Moving away
What you must do before you move
California is unusual here, and it favors the parent who has custody. Family Code § 7501(a): “A parent entitled to the custody of a child has a right to change the residence of the child, subject to the power of the court to restrain a removal that would prejudice the rights or welfare of the child.” Subsection (b) then does something statutes rarely do — it names the case it is codifying: the Legislature declares its intent “to affirm the decision in In re Marriage of Burgess (1996) 13 Cal.4th 25, and to declare that ruling to be the public policy and law of this state.” So there is no fixed notice period and no mileage trigger in the statute the way most states have one. The practical consequences: what matters is who has custody and what your order says, a move-away fight is resolved on whether the move would prejudice the child rather than on a distance test, and many California orders add their own notice requirement. Read your order before you plan anything, and if it is silent, get advice before you move rather than after.
Later on
If you were never married
Parentage has to be established before an unmarried father has custody rights to enforce. California does this either through a voluntary declaration of parentage or through a court parentage judgment — California Rule of Court 5.350 sets out "Procedures for hearings to cancel (set aside) voluntary declarations of parentage or paternity," which confirms the voluntary declaration route exists and can be challenged. Rule 5.78 covers actions to determine a parental or nonparental relationship. Once parentage is established, the custody analysis is the same as for married parents.
Two things surprise California parents most. First, the mediation you are ordered into is not always confidential: in a number of California counties the Family Court Services counselor will send the judge a written recommendation if you and the other parent do not reach agreement. Rule 5.210 requires the counselor to tell you whether they are a recommending county — ask that question at the very start of the session, because it changes how you should approach it. Second, until there is a court order, California treats both parents as having exactly equal rights to the children. The official self-help site says so outright. That cuts both ways: it means the other parent is not breaking a rule by keeping the children, and it is a strong reason to get a temporary order early rather than relying on an informal arrangement.
Compare all fifty states
Where 50/50 really is the default, and the twenty-six states where nothing is presumed.
And the money side
How California calculates child support, and the overnight number that changes it.