How to Modify a Texas Custody Order in 2026: What Counts as "Material and Substantial Change"
A father went back to court a few months after his divorce was finalized and asked the judge to limit his ex-wife's time with their two children. He walked out with a denial, a finding that the suit was frivolous, and an order to pay her $20,000 in attorney fees.
That was the situation that unfolded in the Houston First Court of Appeals in June 2026. It’s the keenest recent reminder that a custody modification isn’t a do-over.
When you seek a custody modification, you’re asking a court to revise an order it already decided was right. The law puts a specific threshold in your way: a “material and substantial change in circumstances”.
Our experienced Denton County child custody lawyers handle these cases regularly, which means we know how they’re best approached.
This guide covers the general provisions of Texas law, the requests that appellate courts in the state accepted and rejected in 2025 and 2026, two new laws that took effect in September 2025, and the local rules in Denton County that will decide whether your case ever reaches a final hearing.
The Two-Part Test Every Modification Request Must Clear
Texas Family Code § 156.101(a)(1) allows a court to modify conservatorship, possession, or access only if both of the following conditions are true:
- The modification is in the best interest of the child.
- The circumstances of the child, a conservator, or another party affected by the order have materially and substantially changed.
Both conditions are independent, and courts have enforced rulings in both directions in 2026.
When a trial court makes an explicit finding that no material and substantial change has occurred, it cannot render a modification order, no matter how the best-interest analysis comes out. That was the ruling of the Austin Court of Appeals in Dillon v. Bamford (2026).
The statute measures change from the earlier of the date the order was rendered or the date you signed the mediated or collaborative settlement agreement on which the order was based. For example, if you went through mediation in March and the judge signed the order in September, the clock would start in March.
Proof of a material and substantial change alone isn’t enough, either. There must also be evidence that the specific relief requested serves the child. The Houston Fourteenth Court reached that conclusion in both In re P.R.M. (December 2025) and Khandria v. Al-Muslim (2026).
One additional wrinkle from P.R.M. is that there’s no requirement that the modification request be narrowly tailored to the verified change. In other words, the change opens the door to modification, but the best-interest consideration ultimately determines the outcome.
Changes Texas Law Treats as Material and Substantial
Some grounds for modification are written directly into the Texas Family Code. In these cases, the best interest of the child must be proven, but it isn’t necessary to argue a certain threshold.
Section 156.107 is the significant addition. Under House Bill 3181, a finding of contempt for denial of court-ordered possession or access, where the conservator has already been found in contempt at least three times for failing to comply with the terms of possession or access, is itself a material and substantial change.
For a parent who has spent years documenting missed exchanges, this rule completely changes the calculation, as a pattern of enforcement can now directly become grounds for modification. It also raises the stakes for the parent on the receiving end of repeated enforcement actions.
Recent Modification Requests the Courts Have Accepted
Even with the statutory provisions, material and substantial change is decided on a case-by-case basis. Recent rulings offer a clearer picture of what the courts look for when rendering these decisions.
Changes Are Weighed Together
In In re P.R.M., the court upheld a finding of material and substantial change based on a combination of multiple factors. These included new work schedules for both parents, remarriages, increased distance between the two homes, and the mother's financial stabilization and greater flexibility at work. No single item would likely have carried the decision.
Serious Medical Developments Carry Weight
The same case involved a child diagnosed with a brain tumor who required frequent medical appointments. Courts treat a child's changing medical needs as a meaningful shift in circumstances that can warrant an immediate modification.
A Parent's Declining Mental Health Can Qualify
In In re M.S. (2026), the court pointed to a mother's deteriorating mental health, combined with her refusal to acknowledge the deterioration. The decision came from the Second Court of Appeals in Fort Worth, which hears appeals from Denton County, so it could influence your case in a way that an opinion from Houston and Dallas wouldn’t.
Evidence Can Develop After a Parent Files
An Austin court held in Loria v. Loria (2026) that a party seeking modification can rely on events that occur during the proceeding itself. The comparison points are the time of the prior order and the time of the modification petition, not the filing date.
Recent Modification Requests the Courts Have Rejected
A custody modification request, even one supported with evidence, isn’t guaranteed to be granted. Here are a few recent examples of petitions that fell short.
Ordinary Co-Parenting Friction
The Corpus Christi–Edinburg court held in In re D.P.R. (2025) that normal conflicts between co-parents don’t by themselves constitute a material and substantial change. In other words, disagreements about pickup times and messaging tone aren’t the same as changed circumstances.
Expected Changes That Haven’t Yet Happened
Texas courts have long held that anticipated future changes generally don’t meet the threshold for modification. However, P.R.M. added a helpful qualification: If other circumstances establish the change, the presence of one anticipated change among them isn’t grounds for rejection.
Military Duty
Under § 156.105, a conservator's deployment, mobilization, or temporary military duty doesn’t by itself constitute a material and substantial change. The court can, however, issue temporary orders under Chapter 153, Subchapter L.
Support-Specific Non-Grounds
Joint conservatorship in and of itself, a history of voluntarily paying more than ordered, a new spouse's income, and an increase in the receiving parent's needs or standard of living are all excluded as grounds for modification by statute.
Relitigating an Old Order
Lastly, and importantly, a modification suit can’t be used to collaterally attack the prior order. Whether the original decree complied with the Family Code isn’t an issue you can raise via a modification petition, as the Houston Fourteenth Court confirmed in Khandria.
It’s also worth pointing out that filing to modify one thing isn’t an admission about another. Under § 156.007, moving to modify child support doesn’t concede a material and substantial change for conservatorship or possession, and the reverse is true as well.
The Evidence Trap: Where Otherwise Strong Cases Can Fail
Establishing a change requires evidence from two points in time: the circumstances as they existed when the order was originally rendered and the circumstances as they are now.
The Dallas Court of Appeals put it plainly in In re O.A. (2026): Without evidence of the conditions at the time of the prior order, a court has no baseline to compare against and cannot grant the requested relief.
Many parents go into court prepared to describe how bad things currently are, but they’re rarely prepared to prove, with testimony and documents, what the arrangement looked like years earlier. That gap can prove fatal to a petition for modification.
The other side has a tool here, too. In In re S.W.R. (2026), a respondent obtained summary judgment on the ground that no material and substantial change existed, and the entire modification suit was dismissed. If your petition has no real evidentiary basis, it could be shot down before trial.
#cta_start
Find Out Whether Your Case Clears the Bar
Most failed modifications happen due to a lack of compelling evidence. Talk to a qualified Denton County child custody attorney about whether the facts of your case prove a change from the date of your last order.
#cta_end
Filing Within One Year of the Last Order
If you want to change who has the exclusive right to designate the child's primary residence, and you’re filing within one year of the original order or the underlying settlement agreement, § 156.102 imposes an extra hurdle.
You must attach an affidavit containing supporting facts and at least one of the following allegations:
- The child's present environment may endanger their physical health or significantly impair their emotional development.
- The person with the exclusive right is the one seeking or consenting to the change, and the change is in the child's best interest.
- That person has voluntarily relinquished primary care and possession of the child for at least six months, and the change is in the child's best interest.
If the court decides that the affidavit doesn’t provide facts adequate to support one of those allegations, it must deny the relief and refuse to even schedule a hearing.
A parallel rule governs temporary orders. Under § 156.006(b), while a modification is pending, a court generally can’t temporarily change the primary-residence designation or the geographic restriction unless one of the three aforementioned conditions applies. A motion based on significant impairment requires its own supporting affidavit.
How Denton County Handles Interviews with Children 12 and Older
Texas law provides a notable separate route to custody modification: a child at least 12 years of age who tells the judge in chambers which parent they prefer to have the exclusive right to designate their primary residence.
Parents often treat this preference interview as a trump card. It isn’t. It only satisfies the threshold ground, and the best-interest standard still controls.
Local practices are pivotal here. The 431st District Court states in its published policies that it won’t interview a child on the day of any hearing or trial. A party seeking an interview must file a pleading and contact the Court Administrator to arrange scheduling.
The court also notes that it discourages these requests on the basis that children speak less candidly with attorneys present or with a court reporter making a record.
As such, if your strategy depends on your child speaking to the judge, that possibility needs to be planned weeks ahead of time.
New in 2026: Grandparents and Other Nonparents Face a Higher Bar
Senate Bill 2052, which took effect September 1, 2025, reshaped modification suits between a parent and a nonparent. Section 153.002 now carries a rebuttable presumption that a parent acts in the child's best interest and that it’s in the child's best interest to be in a parent's care, custody, and control.
A nonparent can overcome this presumption only by proving, with clear and convincing evidence, that denying the requested relief would significantly impair the child's physical health or emotional development. If the court grants relief to the nonparent, it must state the specific supporting facts in the order.
The new § 156.008 carries that into modification suits and adds a rule that a nonparent can’t rely on a prior order granting them relief to rebut the presumption if the parent agreed to that prior order.
In plain terms, a grandparent who gained custody years previous through an agreed order can’t point to that order as proof that they should retain it. The law now applies to suits pending on or filed after September 1, 2025, and it creates new requirements for anyone pursuing a grandparents' rights or nonparent parental rights case.
How to File a Modification Request in Denton County
Here are the basic steps involved in filing a petition for a custody modification in Denton County.
File in the Court with Continuing, Exclusive Jurisdiction
Under §§ 156.001 and 156.002, you must submit your modification petition in the court that rendered the last order, filed with the Denton County District Clerk.
Be Mindful of the Transfer Deadline
If the child has lived in another Texas county for six months or longer, § 155.201(b) makes it mandatory for the court to transfer the case on a timely motion. The statutory deadline is strict: The party filing the suit must file the transfer motion at the time the initial pleadings are filed.
Abide by the Standing Order
The Denton County Standing Order Regarding Children, Property, and Conduct of the Parties automatically applies to every suit affecting the parent-child relationship filed in the county, including those seeking modification or enforcement. It’s enforceable by contempt, with a fine of up to $500, up to six months in the county jail per violation, or both.
The Standing Order imposes several rules that you must abide by, including the following:
- You may not disrupt the child’s daily routine, including schooling, daycare, or normal activities.
- You may not hide or move the child out of the county in an attempt to keep them away from the other parent.
- You may not make disparaging remarks about the other parent or their family in front of the child, including on social media.
Complete the Mandatory Parenting Class
The Standing Order also requires every party in a modification of the parent-child relationship to complete an approved parent education and stabilization program within 60 days of filing or service. Only a court order can waive this requirement.
Failure to file timely proof of attendance could result in your hearing or trial being canceled and your requested relief being denied.
Go Through Mediation Before Trial
Family courts in Denton County require mediation in child custody cases. The 431st District Court's stated policy is that a party is deemed "not ready" for trial if mediation hasn’t taken place, and a party who refuses mediation after a referral order risks dismissal or contempt.
Cases go before either a private mediator or Denton County’s Alternative Dispute Resolution Program. Mediation is much more than a formality — it will most likely be the venue where your case is resolved.
As you prepare to make your modification request, keep in mind that filing a weak case has a cost. If the court finds that a modification suit was filed frivolously or designed to harass, it will state that finding and assess reasonable attorney fees, court costs, and expenses against the filing party. That’s how that unsuspecting Houston father ended up owing $20,000.
Consult a Denton County Custody Modification Attorney Today
A custody modification request is won or lost on whether the petitioner can show that circumstances have changed in a meaningful way and that the proposed change would be in the child’s best interest. Nothing else matters, including how the filing parent feels about the existing order.
North Texas Family Lawyers represents parents across Denton County in custody modification matters, possession and visitation disputes, parenting plan revisions, enforcement actions, and contested relocation cases.
If your custody order no longer fits your situation, or the other parent has frivolously filed to change one that does, contact our office to schedule a confidential consultation.
