Background
Lamberto Guzman and Joy Soto were married and share two minor children. In early 2022, the superior court dissolved their marriage by consent decree awarding joint legal decision-making authority and equal parenting time. Later that year, the court approved a Stipulated Agreement allowing Mother and the Children to relocate to Florida, with Father retaining spring break visitation and agreed-upon international travel rights. The relationship became contentious, with both parents seeking court intervention.
In February 2025, the court held Mother in contempt for authorizing dental work without consulting Father and curtailing his 2023 spring break parenting time. In May 2025, Father filed a Petition to Modify seeking final legal decision-making authority, relocation of the Children back to Arizona, recalculation of child support, and attorney fees. He cited as material changes: Mother’s attempt to modify the Stipulated Order in Florida, disputes over travel and passports, unexplained injuries to the Children, and Mother’s unilateral legal decisions without his input.
The trial court held an evidentiary hearing where both parents testified about these disputes. The court concluded Father failed to prove a material change in circumstances affecting the Children’s welfare and denied his Petition. Father appealed.
The Court’s Holding
The Court of Appeals affirmed the trial court’s denial of Father’s Petition. The court applied the mandatory two-stage inquiry for modification of custody and parenting time: first, determining whether a material change in circumstances affecting the children’s welfare has occurred, and second, if so, whether the proposed modification is in the children’s best interests. Father bore the burden of proof on the first stage.
The appellate court upheld the trial court’s findings that Father failed to establish a material change in circumstances. Regarding Mother’s attempt to litigate in Florida, the court found this conduct did not necessarily indicate she was alienating Father from the Children. As to Mother’s unilateral enrollment of one child in school without consulting Father, while the court agreed she should have consulted him, the circumstance was excusable because the child was waitlisted at the preferred school, enrollment was temporary, and Mother had informed Father. Critically, the court found this did not constitute a material change given the prior hostile relationship between the parents.
On the spring break parenting time dispute for 2025, the court found Father had not been obstructed: he admitted he could not afford the cost of three round-trip tickets and did not travel to Florida himself, while Mother had not prohibited him from seeing the Children. The court concluded any infringement was “largely due to his finances” rather than Mother’s obstruction. The court also determined that the ongoing hostility and lack of respect between both parents was “not new” and therefore did not constitute a material change warranting modification. The court denied both parents’ requests for attorney fees, finding both had engaged in unreasonable conduct.
Key Takeaways
- To modify an existing custody or parenting arrangement, the moving party must prove a material change in circumstances materially affecting the child’s welfare using a fact-intensive inquiry, meeting a high threshold.
- Prior hostile conduct, disputes, or even prior court findings of contempt do not necessarily constitute material change if such problems are longstanding and “not new.”
- A parent’s financial inability to exercise parenting time (such as inability to purchase airline tickets) does not establish obstruction of parenting time by the other parent.
- Once the moving party fails to prove material change of circumstances at stage one, the court need not proceed to stage two (best interests analysis).
- Courts will deny attorney fees when both parties’ conduct has been unreasonable, even if one party requested fees.
Why It Matters
This decision reinforces an important principle in family law: existing custody and parenting arrangements have presumptive stability, and courts will not lightly modify them based on the mere existence of conflict or disputes between parents. By requiring clear proof of material change in circumstances, Arizona courts discourage repeated litigation and protect children from unnecessary disruption. The opinion emphasizes that both parties’ conduct will be evaluated; a parent cannot obtain modification by focusing only on the other parent’s alleged violations while ignoring his own unreasonable conduct.
For practitioners, the decision clarifies that transient or longstanding disputes do not satisfy the material change requirement, and that financial inability to exercise parenting time (rather than obstruction by the other parent) will not support modification. The court’s refusal to advance to best-interests analysis absent a material change demonstrates strict adherence to the two-stage framework, making the first stage outcome dispositive in many contested modification cases.