Arizona child custody jurisdiction under the UCCJEA is decided by a fixed hierarchy of tests in A.R.S. § 25-1001 through § 25-1067, and the first question a judge asks is which state qualifies as the child’s “home state.” If Arizona is the home state, Arizona hears the case. If it isn’t, the court steps down through a short list of alternatives before taking jurisdiction, and in some situations it must refuse the case even when it technically could take it. Knowing where your situation sits in that hierarchy is what determines whether you can file here, modify here, or enforce an order here.
Home State Comes First
Home state is the controlling concept. Under A.R.S. § 25-1002, a child’s home state is wherever the child lived with a parent for at least six consecutive months immediately before the custody case was filed.1Arizona Legislature. Arizona Code 25-1002 – Definitions For a child younger than six months, it is wherever the child has lived since birth with a parent. Vacations and visits out of state are treated as temporary absences and don’t reset the six-month clock.
A.R.S. § 25-1031(A)(1) lets Arizona hear an initial custody case when Arizona is the child’s home state on the filing date.2Arizona Legislature. Arizona Code 25-1031 – Initial Child Custody Jurisdiction Arizona also keeps that authority for six months after the child leaves, as long as at least one parent still lives here. That window matters: a parent who moves the child to another state cannot simply file there the next day and cut Arizona out. The parent left behind still has an Arizona court to go to.
Everything else in the UCCJEA is a backup. The alternative tests only open up when no state qualifies as the home state, or when the home state court declines to act.
When Arizona Isn’t the Home State
If no state meets the six-month test, or the home state court has decided Arizona is a better forum, Arizona can take the case on significant connections. A.R.S. § 25-1031(A)(2) requires two things.2Arizona Legislature. Arizona Code 25-1031 – Initial Child Custody Jurisdiction The child and at least one parent must have a real tie to Arizona beyond physical presence, meaning things like extended family here, enrollment in local schools, and relationships with doctors or counselors. And substantial evidence about the child’s life — school records, medical history, people who know the child well — must be available in Arizona.
A family that arrived a few weeks ago with no local ties won’t clear this bar. The test is deliberately demanding because significant connection jurisdiction exists for children who have been bouncing between states without any one state reaching six months, not as a workaround for the home state rule.
Modifying Custody: Who Keeps Control After an Order Exists
Once an Arizona court issues a custody order, A.R.S. § 25-1032 gives it “exclusive continuing jurisdiction” that doesn’t vanish just because someone moves.3Arizona Legislature. Arizona Code 25-1032 – Exclusive Continuing Jurisdiction Arizona holds that control until either an Arizona court finds that neither the child nor a parent retains a significant connection here and substantial evidence about the child’s welfare is no longer available in Arizona, or until the child, both parents, and anyone acting as a parent have all moved out of the state.
If one parent stays in Arizona after the other relocates with the child, Arizona keeps jurisdiction. The parent who moved cannot start over in the new state. The new state’s court would have to confirm with Arizona that Arizona has released the case first.
The flip side applies when the order came from another state. A.R.S. § 25-1033 does not let Arizona freely modify out-of-state custody orders.4Arizona Legislature. Arizona Code 25-1033 – Jurisdiction to Modify Determination Arizona must first independently qualify under the home state or significant connection test. On top of that, at least one of two things must be true:
- The court that issued the order determines it no longer has exclusive continuing jurisdiction, or that Arizona would be a more convenient forum.
- The child, both parents, and anyone acting as a parent no longer live in the state that issued the order.
Moving to Arizona and filing a modification without satisfying one of these conditions is how parents end up with dismissed cases and wasted filing fees. Even when Arizona has become the child’s home state, the original court gets first say on whether it will let go.
Emergency Jurisdiction Is Narrow
A.R.S. § 25-1034 lets Arizona act immediately when a child present in the state has been abandoned or faces mistreatment or abuse, or when a sibling or parent is being harmed or threatened.5Arizona Legislature. Arizona Code 25-1034 – Temporary Emergency Jurisdiction These orders are protective, not permanent. They do not transfer long-term custody authority to Arizona.
If no custody order exists anywhere and no other state has started a case, an Arizona emergency order stays in effect until a court with proper jurisdiction acts. If the situation lasts long enough for Arizona to become the child’s home state, that emergency order can become final. But when another state already has an order or an open case, the Arizona emergency order must carry an expiration date — long enough for the protected party to get an order from the state with primary jurisdiction, then it ends. The Arizona judge is also required to contact the other state’s court immediately to coordinate.
When Arizona Refuses a Case It Could Take
Having jurisdiction isn’t the same as using it. A.R.S. § 25-1037 lets an Arizona court step aside as an inconvenient forum when another state is a better place to decide the case.6Arizona Legislature. Arizona Code 25-1037 – Inconvenient Forum Either parent, the judge, or the other state’s court can raise it. The statute lists eight factors, including domestic violence and which state is better positioned to protect the parties, how long the child has lived outside Arizona, the distance between courts, the parties’ finances, any agreement between the parents, where the evidence and witnesses are, which court can resolve things more quickly, and which court already knows the facts. Domestic violence is listed first, and a parent who fled abuse should know the law accounts for the danger of being forced to litigate where the abuser lives. If the court decides Arizona is inconvenient, it stays the case on the condition that the other state promptly opens its own.
Arizona also refuses cases that were obtained by misconduct. Under A.R.S. § 25-1038, if a parent gained Arizona jurisdiction through unjustifiable conduct — a typical example is secretly relocating the child here without the other parent’s knowledge — the court must decline the case.7Arizona Legislature. Arizona Code 25-1038 – Jurisdiction Declined by Reason of Conduct Narrow exceptions apply if everyone else agrees to Arizona, if the proper home state sends the case here, or if no other state has jurisdiction. When the court dismisses or stays a case on this ground, it must order the offending party to pay the other side’s reasonable expenses, including attorney fees, travel, witness and investigative costs, and child care tied to the proceedings. That cost assessment is mandatory unless the offending party shows it would be clearly inappropriate.
Enforcing an Out-of-State Order in Arizona
If a custody order from another state needs to be enforced here, A.R.S. § 25-1055 provides a registration process.8Arizona Legislature. Arizona Code 25-1055 – Registration of Child Custody Determination You file the order with an Arizona court and it becomes enforceable here as if an Arizona judge had issued it. You can register with or without a simultaneous enforcement request.
The other parent gets served with notice and has twenty days to contest. The grounds are limited to three: the issuing court lacked jurisdiction, the order has since been vacated or modified by a court with authority to do so, or the contesting parent was entitled to notice in the original case but never received it. No contest in twenty days and the registration is confirmed.
The Affidavit You File on Day One
Every custody case in Arizona opens with a sworn jurisdictional disclosure. A.R.S. § 25-1039 requires each party to provide, in the first pleading or an attached affidavit, the child’s current address, every place the child has lived during the past five years, and the names and addresses of everyone the child lived with during that time.9Arizona Legislature. Arizona Code 25-1039 – Information to Be Submitted to Court You also have to disclose:
- Any other case involving custody or visitation with the child, with court, case number, and any existing order.
- Any pending case that could affect the custody dispute, such as protective orders, adoption proceedings, or termination of parental rights cases.
- The name and address of anyone not already a party who has physical custody of the child or claims custody or visitation rights.
Arizona uses a standard form called the Affidavit Regarding Minor Children. Skipping it or filling it out inaccurately can draw sanctions or dismissal. It is the first document the judge uses to check whether another court is already handling the same child and whether Arizona actually has jurisdiction to proceed.