Kansas Parenting Plan Modification

The standard a Kansas judge applies

Under K.S.A. 23-3218(a), a Kansas court may change any prior order of custody, residency, visitation and parenting time when a material change of circumstances is shown. Kansas courts describe that as a change of a substantial and continuing nature, one that makes the original order unreasonable.

That is only step one. The court then asks whether the change serves the child's best interests under K.S.A. 23-3203, which weighs the child's age and needs, adjustment to home and school, evidence of domestic abuse, and each parent's willingness to respect the child's bond with the other parent. That last factor matters more than most parents expect.

What counts as a material change

Judges respond to patterns with dates behind them, not to feelings. These carry weight:

• A move that ends weekday parenting time, pulls the child out of their school, and adds real travel cost. In an unpublished 2024 Kansas Court of Appeals decision, In re Marriage of C.D. and S.T., No. 126,302, a move that was planned and substantially carried out, with the family home sold, a new house bought and the children enrolled in the new district, was treated as a material change, and the resulting order turned on whether the parent actually relocated. Unpublished opinions are persuasive only and are not binding precedent under Kansas Supreme Court Rule 7.04(g), so treat it as an illustration of how a court can read facts like these, not as a rule.
• Repeated unreasonable denial of or interference with parenting time. K.S.A. 23-3221(b) says outright that this may be treated as a material change justifying a change in legal custody, residency, or parenting time.
• A child's needs changing with age. A schedule built for a four-year-old often stops working for a fourteen-year-old with a job and a team.
• Safety concerns with evidence behind them: substance abuse, untreated mental illness, exposure to violence, or a new household member with a relevant conviction.

What usually is not enough

Filing on thin facts costs you credibility with the judge who will later decide something that matters. These rarely succeed alone:

• Being unhappy with the plan, or believing you would do a better job.
• A parent remarrying or taking a new partner, with nothing more attached to it.
• Military service. K.S.A. 23-3217(b) states that a service member's absence or failure to comply because of deployment, mobilization, temporary duty, or an unaccompanied tour does not by itself warrant a permanent modification.
• One missed exchange, or a single bad month.
• Your child saying they want to move. Their preference is one factor under K.S.A. 23-3203, weighed against age and maturity. It is input, not a decision.

Legal custody, residency, and parenting time are three different requests

Parents use the word custody for all three, and that confusion is expensive. Legal custody is who decides on school, medical care, and religion, and in Kansas it is usually joint. Residency is where the child primarily lives. Parenting time is the schedule.

What you have to show can differ. Changing legal custody or residency requires the material change showing under K.S.A. 23-3218. K.S.A. 23-3221(a) permits the court to modify an order granting or denying parenting time whenever modification would serve the child's best interests, and adjusting a schedule is generally a lighter lift than moving a child's home. Be aware that K.S.A. 23-3218(a) also lists parenting time among the orders requiring a material change, so the two statutes overlap on their face and you should expect the judge to want a real reason either way.

The 30-day relocation notice rule

K.S.A. 23-3222 requires a parent with legal custody, residency, or parenting time to give the other parent written notice at least 30 days before changing the child's residence, or before removing the child from Kansas for more than 90 days. It must go by restricted mail, return receipt requested, to your last known address. A text or a casual email does not satisfy the statute. One exception matters: K.S.A. 23-3222(d) removes the notice requirement where the other parent has been convicted of a listed crime in which the child was the victim.

If your co-parent skips the notice, the failure may be punishable as indirect civil contempt, and the court may order them to pay your reasonable attorney fees and other expenses caused by the missing notice. The move itself may then be treated as a material change justifying modification of legal custody, residency, child support, or parenting time.

Notice is not a permission slip. It starts a clock. Nothing in K.S.A. 23-3222 makes those 30 days your own deadline to file, but acting before the relocation happens generally puts you in a stronger position, because K.S.A. 23-3222(c) has the court weigh the effect of the move on the child, the effect on your rights, and the added cost of exercising them. Every outcome under that subsection is discretionary and turns on the facts in front of the judge.