Move-Away Custody Cases in California

When a parent with custody wants to relocate with the children — whether across the state or out of California entirely — it triggers one of the most high-stakes disputes in family law. California has developed a detailed legal framework for these cases, and the outcome depends heavily on the existing custody arrangement, the reasons for the move, and the impact on the child.

For a general overview of how relocation affects custody, see our national guide on relocation and custody.

The Legal Framework for Move-Away Cases

California’s move-away law is built primarily on case law rather than statute. The two landmark California Supreme Court decisions that govern these cases are:

• In re Marriage of Burgess (1996): Established the presumptive right of a parent with primary physical custody to relocate with the child.
• In re Marriage of LaMusga (2004): Clarified the factors courts must consider when the non-relocating parent objects and seeks a change of custody.

Together, these cases create a framework where the custodial parent has a significant advantage, but the court retains the authority to deny a move or change custody when the evidence supports it.

The Burgess Presumption

Under Burgess, a parent with sole or primary physical custody has a presumptive right to relocate with the child. The court cannot prevent the move unless the non-relocating parent demonstrates that the relocation would cause detriment to the child.

This presumption reflects a core principle in California family law: the custodial parent’s right to make decisions about where to live is part of custody itself. Restricting that right requires a compelling reason.

However, the Burgess presumption does not apply when parents share joint physical custody on a roughly equal time-sharing basis. In those cases, the relocating parent does not enjoy a presumptive right, and the court treats the request as a new custody determination under the best interests of the child standard.

The LaMusga Factors

When a non-relocating parent opposes the move and requests a change of custody, the court must evaluate the request using the factors identified in In re Marriage of LaMusga:

1. The child’s interest in stability and continuity in the existing custody arrangement
2. The distance of the proposed move and its impact on the existing parenting schedule
3. The age of the child — younger children may be more adaptable, while older children have stronger ties to schools, friends, and community
4. The child’s relationship with both parents and the potential impact of the move on those relationships
5. The relationship between the parents and their willingness to facilitate ongoing contact with the non-relocating parent
6. The relocating parent’s reasons for the move — whether it is motivated by a legitimate purpose (new job, family support, lower cost of living) or primarily by a desire to limit the other parent’s access
7. The non-relocating parent’s reasons for opposing the move — whether the objection is based on genuine concern for the child or a desire to control the other parent
8. The extent to which the parents are willing to put the child’s interests above their own

The court considers the totality of these factors. No single factor is dispositive.

The 45-Day Notice Requirement

California Family Code Section 3024 requires that a parent who plans to relocate with the child provide written notice to the other parent at least 45 days before the proposed move. The notice must include:

• The proposed new address
• The proposed new phone number (if known)

This requirement applies to any move that would “substantially impair” the non-relocating parent’s ability to exercise custody or visitation. It applies regardless of whether the parents have a formal custody order.

Failure to provide proper notice can result in serious consequences, including:

• The court ordering the child’s return
• A finding against the relocating parent in a subsequent custody modification hearing
• Potential sanctions

Burden of Proof

The burden of proof in a move-away case depends on the custody arrangement:

• Primary custody parent relocating: The non-relocating parent bears the burden of showing that the move would cause detriment to the child sufficient to warrant a change in custody. This is a high bar.
• Joint physical custody (equal or near-equal time): Neither parent has a presumption. The court conducts a fresh best-interests analysis, and both parents effectively share the burden of showing that their proposed arrangement serves the child’s interests.

The distinction is significant. Parents with primary custody prevail in move-away disputes far more often than parents in shared custody arrangements.

How Courts Evaluate Move-Away Requests

In practice, California courts look at the full picture. Beyond the LaMusga factors, judges often consider:

• Whether a reasonable parenting plan can maintain the child’s relationship with the non-relocating parent. If the relocating parent proposes extended summer and holiday time, video calls, and other arrangements that preserve the relationship, the court is more likely to allow the move.
• The relocating parent’s track record of facilitating the co-parenting relationship. A parent who has historically supported the child’s relationship with the other parent is in a stronger position than one who has obstructed contact.
• The child’s wishes, particularly for older children. While not determinative, courts give increasing weight to the preferences of children who are mature enough to express a reasoned opinion. For more on this topic, see what age can a child choose custody.
• Expert testimony. In contested move-away cases, the court may appoint a custody evaluator (under Family Code Section 3111 or Evidence Code Section 730) to interview the parents and child, review records, and provide a recommendation.

Tips for the Relocating Parent

If you are the parent seeking to move:

1. Provide proper notice. Comply fully with the 45-day requirement under FC 3024. Provide as much detail as possible about the proposed move.
2. Document your reasons. Be prepared to articulate a legitimate, good-faith purpose for the relocation — a job offer, proximity to extended family, lower cost of living, or educational opportunity.
3. Propose a detailed parenting plan. Show the court exactly how the child will maintain a meaningful relationship with the other parent. Include specifics about transportation, holiday schedules, and communication.
4. Do not move before getting a court order if the other parent objects. Moving without court approval can severely damage your position.
5. Demonstrate your co-parenting record. Evidence that you have consistently supported the child’s relationship with the other parent strengthens your case.

Tips for the Non-Relocating Parent

If you are the parent opposing the move:

1. File a motion promptly. If you receive a 45-day notice or learn of a planned move, file a request for order seeking to prevent the relocation or modify custody as soon as possible.
2. Focus on the child’s best interests. Courts are not persuaded by arguments based solely on your own convenience or desire to maintain the status quo. Explain specifically how the move would harm the child.
3. Offer an alternative parenting plan. If you are seeking primary custody in the event the other parent relocates, present a detailed plan showing that you can meet the child’s needs.
4. Document your involvement. Show the court your active, consistent participation in the child’s daily life — school involvement, medical appointments, extracurricular activities, and daily routines.
5. Request a custody evaluation. An independent evaluator’s recommendation carries significant weight and can be a powerful tool if the facts support your position.

For a deeper understanding of custody law in California, visit our California custody overview. You may also want to review our guide on child custody laws explained.

What to Do Next

Move-away cases are time-sensitive and fact-intensive. Whether you are planning a relocation or opposing one, the steps you take early in the process matter:

1. Understand your custody arrangement. Determine whether you have primary custody, joint custody, or another arrangement, as this directly affects the legal standard.
2. Comply with notice requirements. If you are the relocating parent, provide the required 45-day written notice. If you are the opposing parent, respond promptly.
3. Prepare a detailed parenting plan. Regardless of your position, courts want to see that you have thought carefully about how both parents will remain involved in the child’s life.
4. Consult an attorney. Move-away cases involve complex, fact-specific legal standards, and the outcome has lasting consequences for your family.

Schedule a free consultation to discuss your move-away case with an experienced California custody attorney.