A child custody dispute can become significantly more complicated when parents live in different states. A parent may move to California while the other remains elsewhere, or a child may have recently relocated before a custody case begins. In these situations, the first question may not be which parenting plan is best. The court may first need to determine which state has authority to make the custody decision.

What Determines Which State Has Custody Jurisdiction?

California applies the Uniform Child Custody Jurisdiction and Enforcement Act, commonly called the UCCJEA, when determining jurisdiction over interstate child custody matters.

The UCCJEA establishes rules for deciding which state’s court has authority to make an initial child custody determination. The purpose is to avoid competing custody proceedings and conflicting orders in different states.

One important concept is the child’s “home state.” In general, the analysis considers where the child lived with a parent or person acting as a parent for the relevant period immediately before the custody proceeding began. For a child younger than six months, the analysis considers where the child lived from birth.

Temporary absences can still count as part of the home-state period.

The precise jurisdictional analysis depends on the child’s history and the timing of the court proceedings. A parent should therefore not assume that moving to California immediately gives a California family court authority to make permanent custody orders.

Why Is the UCCJEA Declaration Important?

When a California divorce petition identifies minor children of the parties, a declaration under the UCCJEA must be provided even if the parents do not currently disagree about custody jurisdiction.

The declaration gives the court information about where the child has lived and identifies other custody proceedings or orders that may affect the case.

This information becomes especially important when a child has lived in more than one state or when another court has already entered custody orders.

If there is a dispute between states about which court should exercise authority, the UCCJEA provides the framework for determining where jurisdiction properly belongs.

The jurisdiction question is separate from the ultimate custody decision. A California court might believe a particular parenting arrangement would benefit a child but still need legal authority under the UCCJEA before making the custody determination.

What If There Is Already a Custody Order From Another State?

An existing custody order can significantly affect what a California court may do.

The UCCJEA addresses not only initial custody decisions but also continuing jurisdiction and enforcement of existing custody determinations. When another state’s court properly entered an existing custody order, California does not simply disregard that order because one parent or the child later moved here.

Depending on the circumstances, the original state may continue to have authority over custody modifications. Determining whether jurisdiction has shifted can require examining where the child and parents currently live and whether the original court continues to have the required connection to the case.

California courts may also have limited authority to make temporary emergency custody orders in qualifying circumstances involving a child who is present in California and needs immediate protection. Emergency jurisdiction, however, is different from obtaining permanent authority over the custody case.

Conclusion: Interstate Custody Cases Begin With Jurisdiction

When parents and children live in different states, California child custody proceedings may require a jurisdictional analysis before the family court decides the parenting arrangement. The UCCJEA helps determine which state should make custody decisions and how existing orders should be treated. A child’s residence history, previous custody proceedings, and existing orders can therefore be critical when an interstate custody dispute begins.