In life, circumstances change—and when they do, the original parenting plan that once worked for your family may no longer make sense. Fortunately, Colorado law allows for modifications to custody (also known as Allocation of Parental Responsibilities or “APR”), but not without meeting certain legal standards. If you’re considering a change to parenting time or decision-making, it’s important to understand what the court requires and what evidence will support your request.
The Legal Standard for Modifying Parenting Time
Under C.R.S. § 14-10-129, a court may modify parenting time if doing so is in the best interests of the child. However, if your proposed modification would substantially change the parenting schedule or limit the other parent’s time, the court applies a higher legal standard. In those cases, you must show that there has been a “substantial and continuing change in circumstances” that makes the current arrangement no longer workable.
Courts are cautious when it comes to major changes, especially those that reduce a parent’s time or authority. The burden is on the requesting party to prove why the change is necessary—not just preferred—and how it would benefit the child.
Modifying Decision-Making Authority
If you’re seeking to modify decision-making responsibility (i.e., who makes major decisions about education, health, or religion), the threshold is even higher. The court will not change decision-making unless it finds that the existing arrangement endangers the child’s physical health or emotional development, or that both parties agree to the change.
This is why evidence matters so much. Allegations without support rarely result in changes.
What Evidence Supports a Custody Modification?
To persuade the court that a modification is warranted, consider the following types of evidence:
- School records showing academic decline, behavior issues, or excessive absences tied to the current arrangement
- Medical or mental health records if a child is experiencing stress, anxiety, or other health concerns
- Communication logs (emails, texts, parenting apps) that show consistent breakdowns or violations of the current plan
- Police or child welfare reports if safety or endangerment is an issue
- Testimony from teachers, therapists, or other professionals involved in the child’s life
- Proof of relocation or other substantial life changes, like changes in work schedules, remarriage, or substance abuse
The more you can show that the current parenting arrangement is harming the child or is no longer in their best interest, the stronger your request will be.
Final Thought: It’s About the Child
The court’s guiding principle is always the best interests of the child. That means focusing your case on how the proposed change will benefit the child—not how it benefits you. Avoid framing the case around parental conflict or personal grievances. Instead, document what’s changed, why the current plan no longer works, and how your proposal creates a healthier, more stable environment for the child.
At Covalent LLP & Legal Services, we help clients assess their situation honestly and present compelling, well-supported motions for custody modification. If you’re ready to explore whether a change is legally appropriate and practically achievable, we’re here to help you take the next step—with clarity, strategy, and care.
