You can ask a Texas court to change an existing child custody order at any time. There is no general waiting period. The one-year rule people hear about is narrower than that: if you file within one year of the order and you’re asking to change which parent has the exclusive right to designate the child’s primary residence, Texas Family Code Section 156.102 requires you to attach a sworn affidavit. The affidavit has to allege one of three specific grounds and back it with facts, or the judge won’t set a hearing at all.
That’s why we call it the affidavit rule parents miss. Some parents wait a full year when they didn’t need to. Others file early, attach a thin affidavit, and watch the case end before it starts. Below, we walk through what the rule covers, the three grounds it allows, how the judge screens the affidavit, and how to decide whether to file now or wait.
Which Texas child custody order changes the one-year rule covers
Texas Family Code Section 156.102 applies to one kind of request: a suit, filed within one year of the order, asking to change which parent has the exclusive right to designate the child’s primary residence. In plain terms, that’s the parent who decides where the child lives and, usually, which school district the child attends.
The year doesn’t always start on the date printed on your divorce decree or custody order. It runs from the earlier of two dates: the rendition of the order, or the signing of a mediated or collaborative law settlement agreement the order is based on. If you settled at mediation, the clock started the day you signed the mediated settlement agreement, even if the judge signed the final order weeks later. Rendition is the moment the judge officially announces the ruling, which can also come before the written order is signed. And the rule looks at when the suit is filed, not when it’s heard.
Just as important is what the rule leaves alone. The affidavit requirement doesn’t apply to a request that only changes the possession schedule, such as moving to an expanded schedule or adjusting weekday visits. A child support order follows its own modification rules under Section 156.401. Those requests still have to meet the general test for changing a court order, a material and substantial change plus the child’s best interest, and our page on custody and support modifications in Texas explains that test. What they don’t need is a one-year affidavit.
Three grounds that support a custody modification in the first year
A one-year custody modification affidavit in Texas must allege, with supporting facts, at least one ground from a short, closed list in Section 156.102(b): a present environment that may endanger the child, the primary parent’s own request or consent, or that parent’s voluntary relinquishment of the child for six months. The statute’s wording is:
- the child’s present environment may endanger the child’s physical health or significantly impair the child’s emotional development
- the parent who currently has the exclusive right to designate the primary residence is the one asking for the change, or consents to it, and the change is in the child’s best interest
- that parent has voluntarily given up the primary care and possession of the child for at least six months, and the change is in the child’s best interest
Each ground does different work. The first is about the child’s circumstances right now. The word “present” matters, because a problem that ended months ago is harder to fit into it. The bar is also high: “may endanger” physical health or “significantly impair” emotional development, not simply that the other home is less convenient or less structured.
The second ground is the cooperative path. When both parents agree the child should move to the other home, the one-year rule is rarely the obstacle. The parent who holds the right signs on, and the affidavit says so. The third ground covers the parent who, in practice, handed the child over. A child who has lived with the other parent for six months or more by the primary parent’s choice can fit it, as long as the change is also in the child’s best interest.
There’s one carve-out. Under Section 156.102(d), the six-month relinquishment ground doesn’t apply to a parent who temporarily left the child with someone else because of military deployment, military mobilization or temporary military duty, as Section 153.701 defines those terms. A service member’s deployment doesn’t hand the other parent a shortcut.
Why the court may never set a hearing on your case
Under Section 156.102(c), a Texas court reviewing a modification filed within the first year must deny the relief and refuse to schedule a hearing unless the affidavit itself states facts adequate to support one of the allowed allegations. If the facts are adequate, the court sets a time and place for the hearing. That screen is where many early filings end.
Read that closely. At this stage, the affidavit is the case. The judge isn’t hearing your testimony yet or looking at exhibits you plan to bring later. The judge reads a sworn written statement and decides whether it states enough facts. The statute asks for supporting facts, so an affidavit that simply repeats the words of the law gives the judge nothing to weigh.
Compare two versions. “My son is in danger at his father’s house” is a conclusion. A factual version says what happened, when and how you know it: the dates your son missed school, what the school told you, what you saw at the exchange on a specific Friday, and what records exist. The more specific, dated and checkable the facts, the more the judge has to evaluate. If the judge finds them inadequate, the request is denied without a hearing, and you’ve spent filing fees and time on a case that never reached a courtroom.
If the reason you want a change is a move by the other parent, keep in mind that many orders also set a separate limit on where the child can live. Our page on geographic restrictions in Texas custody orders explains how that limit works. A move can raise both issues at once.
Why a child’s preference isn’t enough in the first year
A child’s preference can support a custody change in Texas after the first year, but not by itself within it. Section 156.101(a)(2) lets a court modify an order when a child 12 or older tells the judge in chambers which parent should designate the primary residence, yet that preference isn’t one of the three Section 156.102 grounds.
Within the first year, the child’s preference doesn’t satisfy the affidavit requirement by itself. A 13-year-old who says “I want to live with Dad” six months after the decree doesn’t, by that statement alone, get past the affidavit screen. The affidavit still has to allege endangerment, the primary parent’s consent, or a six-month voluntary relinquishment. A child’s wishes can be part of the factual picture, but on the statute’s text they aren’t a ground of their own during that first year.
Parents are often surprised by this, because the 12-year-old rule is well known. It simply works on a different timeline. Our post on how a Texas judge interviews a child about custody explains how that conversation works.
Temporary custody orders carry their own affidavit
While a Texas modification is pending, Section 156.006(b) bars a temporary order that changes who designates the primary residence, or that creates, changes or removes a geographic restriction, unless the order is in the child’s best interest and one of three narrow conditions is met.
The child’s present circumstances would significantly impair the child’s physical health or emotional development. The designated parent has voluntarily given up primary care for more than six months. Or the child is 12 or older and has told the judge in chambers which parent they prefer.
If you ask for a temporary order on the impairment ground, Section 156.006(b-1) requires another affidavit, based on personal knowledge or on what someone with personal knowledge told you. The judge again decides from the affidavit whether to set a hearing. A parent seeking an urgent change within the first year may need two affidavits: one for the modification suit under Section 156.102 and one for the temporary orders request. It’s worth noticing that the 12-and-older preference, which isn’t a Section 156.102 ground, does appear on the temporary orders list.
Filing a modification now or waiting out the year
Once the first anniversary passes, the Section 156.102 affidavit requirement falls away. You still have to show the change is in the child’s best interest and meet the general modification standard, but there’s no affidavit screen before a hearing. That makes timing a real decision, not a formality.
If you’re dealing with genuine safety concerns, waiting is rarely the right answer. The affidavit route lets a serious problem reach a judge within the first year, and an emergency may also call for temporary orders. If the reason is a new job, a remarriage, or a schedule that has turned out to be hard to live with, the better path is often to document what’s happening and file after the year ends, or to change only the possession schedule now. If the two of you agree, a modification with the primary parent’s consent doesn’t have to wait for the anniversary.
Tyler Key, our managing attorney, has served as a guardian ad litem and an amicus attorney, roles that look at a case from the child’s side. From that seat, the real question is how a second change of home within a year would affect the child’s school, friendships and routine, and that’s the question best interest asks. There’s also a cost to filing a case that can’t meet the standard: under Section 156.005, if the court finds a modification suit was filed frivolously or to harass, it must say so in the order and assess reasonable and necessary attorney’s fees, court costs and expenses against that party.
Where you file is fixed too. The court that signed your order usually keeps continuing, exclusive jurisdiction, even if both parents have moved. Our post on custody modification after a move from Austin to Bastrop walks through how that works and when a case can transfer. Our family law attorneys handle custody and visitation cases in Travis, Hays, Bastrop and Comal counties, and the Section 156.102 rule applies to modifications the same way in each.
If your current order is less than a year old and you think it needs to change, we can help you sort out whether the one-year rule applies, which ground fits your facts, and whether it makes sense to file now or wait. You can reach our modification attorneys at (512) 400-2350 to talk it through. This article is general information, not legal advice for your situation.
Frequently asked questions
How soon can you modify custody in Texas?
You can file a child custody modification at any time. If you file within one year of the order and ask to change which parent designates the child’s primary residence, Family Code Section 156.102 requires a sworn affidavit alleging endangerment, the primary parent’s consent, or six months of voluntary relinquishment, with supporting facts.
Does the one-year rule apply to changing the visitation schedule?
No. Section 156.102 applies only to a suit to change who has the exclusive right to designate the primary residence. A request that only adjusts the custody and visitation schedule still has to meet the general modification standard, but it doesn’t need the one-year affidavit.
Can my 12-year-old choose to live with me within a year of the order?
A child’s preference alone is not one of the three grounds Section 156.102 accepts during the first year. After the year, a child 12 or older who tells the judge in chambers which parent they prefer can be a ground for modification under Section 156.101(a)(2).
When does the one-year clock start?
It runs from the earlier of the date the order was rendered or the date a mediated or collaborative law settlement agreement the order is based on was signed. If you settled at mediation, the signing date of that agreement is often the start date.
What happens if the judge finds my affidavit isn’t enough?
Under Section 156.102(c), the court denies the request and refuses to schedule a hearing. The decision is made from the affidavit itself, so the facts need to be specific and supported when you file.
Can we change custody within a year if we both agree?
Often, yes. One of the allowed grounds is that the parent with the exclusive right to designate the primary residence is asking for or consents to the change, and the change is in the child’s best interest. The court still has to approve it.