Colorado Child Custody Laws: How Custody Is Decided

If you search Colorado court forms for the word "custody," you will likely come up short. Colorado law does not use that term. It calls the arrangement the allocation of parental responsibilities, or APR. The APR covers two distinct issues: parenting time (which parent the child lives with and when) and decision-making responsibility (who has legal authority to make major choices about the child's education, medical care, religion, and other significant matters). A written parenting plan addresses both issues, along with child support.

This framework applies whether or not you were ever married to the other parent. If you were never married, a standalone custody case is started by filing a Petition for Allocation of Parental Responsibilities (form JDF 1413) in Colorado district court. The Colorado Judicial Branch publishes this form and step-by-step self-help instructions at coloradojudicial.gov. (Colorado Judicial Branch, Self-Help: Form a Parenting Plan (APR/Custody))

The Overriding Standard: Best Interests of the Child

Every APR decision in Colorado flows from a single question: what arrangement best serves the child's interests? Colorado law makes the child's safety paramount within that analysis. Courts weigh a range of factors bearing on the child's well-being and safety, considering the circumstances of the whole family. (C.R.S. § 14-10-124)

Colorado law is explicit on one point: no court may presume that either parent is better able to serve the child's best interests because of that parent's sex. Mothers and fathers start on equal legal footing. (C.R.S. § 14-10-124(3))

Decision-Making Responsibility: Joint vs. Sole

Decision-making responsibility can be allocated jointly — both parents share authority — or solely to one parent. Courts sometimes favor joint decision-making because it keeps both parents engaged in the child's life, but it is not automatic and it is not always appropriate.

Critically, Colorado law bars a court from ordering mutual (joint) decision-making over a parent's objection when the court finds by a preponderance of the evidence that the other parent has engaged in child abuse, child neglect, or domestic violence. If abuse or domestic violence is part of your situation, that fact has a direct legal effect on what orders the court can make. (C.R.S. § 14-10-124(4))

Parenting Time Schedules

There is no single default schedule in Colorado. Parenting time arrangements range from close to equal time-sharing to a setup where the child lives primarily with one parent and the other parent has scheduled visits. What courts look for is a schedule suited to the specific child and family — not a preset formula. The parenting plan must spell out the regular weekday and weekend schedule, holiday and school-break arrangements, and how parents will communicate with and about the child.

How Colorado Establishes Jurisdiction — and Why It Matters

Before a Colorado court can enter orders about your child, it must have legal authority — jurisdiction — to do so. Colorado follows the Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA), which has been adopted by 49 states and the District of Columbia. (Massachusetts has not adopted it.) Under Colorado's version, the state can exercise initial jurisdiction as the child's home state — defined as the state where the child has lived with a parent for at least 182 consecutive days immediately before the case is filed, or since birth if the child is under six months old. (C.R.S. §§ 14-13-102(7), 14-13-201)

Once Colorado enters your order, a federal law called the Parental Kidnapping Prevention Act (PKPA, 28 U.S.C. § 1738A) requires every other state to honor it and forbids another state from modifying it while Colorado still has jurisdiction. This prevents a parent from taking the child across state lines to get a different result in a friendlier court. (28 U.S.C. § 1738A)

Special Situations

Domestic Violence and Protective Orders

As described above, proven domestic violence limits what the court can order on decision-making. A broader protection: under the federal Violence Against Women Act, a protective order issued in any state is enforceable in every other state. A valid Colorado protection order travels with you if you move, and an out-of-state order is likewise enforceable in Colorado. (18 U.S.C. § 2265)

Military Families

If a parent's military duties materially affect their ability to appear in court, the federal Servicemembers Civil Relief Act (SCRA, 50 U.S.C. § 3932) allows them to request a stay of at least 90 days in the proceeding — including custody cases. This prevents a deployed parent from facing a default order while they are unable to participate. (50 U.S.C. § 3932)

Native American Children

If your child qualifies as an Indian child under the federal Indian Child Welfare Act (ICWA, 25 U.S.C. §§ 1901–1923), significant additional protections apply. Tribes may have jurisdiction over the case, the tribe must receive notice, active efforts must be made to preserve the family, and placement preferences favor relatives and tribal homes. ICWA applies primarily to foster care, adoption, and termination proceedings, but it can be relevant whenever child protective services becomes involved in a custody dispute. (25 U.S.C. §§ 1901–1923)

International Abduction Concerns

If a parent has taken a child to another country — or brought one into the U.S. — without consent, the International Child Abduction Remedies Act (ICARA, 22 U.S.C. § 9001 et seq.) provides a federal court process to seek the child's return under the Hague Convention. ICARA focuses on where the child should be returned, not on who ultimately receives custody on the merits. (22 U.S.C. § 9001 et seq.)

Modifying a Colorado Parenting Order

An APR order is not set in stone — circumstances change, and so can orders. But Colorado law sets different bars depending on what you want to modify.

• Changing decision-making responsibility requires showing a change in circumstances and that modification is necessary to serve the child's best interests. (C.R.S. § 14-10-131)
• Changing the parent with whom the child lives a majority of the time is subject to a higher bar. You generally must show that the child's present environment endangers their physical health or significantly impairs their emotional development — unless the parents agree or the child has been integrated into the other household with the primary parent's consent. (C.R.S. § 14-10-129(1.5), (2))

Time-sensitive: A substantial modification motion generally cannot be filed within two years of the last order's disposition unless you can show endangerment or that the other parent intends to relocate. Filing before that window closes without an applicable exception will generally not succeed. Note the date of your last order and confirm the precise deadline with your Colorado district court. (C.R.S. § 14-10-129(1.5), (2))

Relocation

Time-sensitive: If you are the majority-time parent and plan to move in a way that would substantially change your child's geographic ties, Colorado law requires you to give written notice as soon as practicable — before the move, not after. That notice must state the intended new location, your reason for relocating, and a proposed revised parenting plan. The court is required to treat the relocation hearing as a priority on its docket and must weigh specific relocation factors before deciding whether to approve the move and how to adjust the parenting schedule. (C.R.S. § 14-10-129(2)(c))

What You Can Do in Colorado: Practical Steps

1. Get the official forms first. The Colorado Judicial Branch's self-help center at coloradojudicial.gov has the Petition for Allocation of Parental Responsibilities (form JDF 1413) and related parenting plan forms at no cost. Start there before doing anything else. (Colorado Judicial Branch, Self-Help)
2. File in the right district court. APR cases go to Colorado district court in the county appropriate under the UCCJEA home-state rules. If your child recently moved or has ties to another state, confirm jurisdiction with the court before filing.
3. Draft a parenting plan early. Even if you and the other parent disagree on everything, writing out your preferred schedule and decision-making arrangement helps focus the case. If you can agree, a stipulated parenting plan filed with the court can resolve the matter without a contested hearing.
4. Document safety concerns from the start. If domestic violence, abuse, or neglect is part of your situation, gather supporting evidence — police reports, medical records, prior court orders — as early as possible. These facts directly shape what orders the court may enter on decision-making.
5. Track the two-year modification window. Note the exact date your last APR order was entered. A substantial modification motion filed before two years have passed generally will not succeed without an exception for endangerment or relocation. Confirm the date with your Colorado court.
6. Give relocation notice before you move. If you are the majority-time parent planning to relocate substantially, written notice must go out as soon as practicable — with your destination, your reason, and a proposed revised plan. Waiting until after the move is not permitted under Colorado law.
7. Raise military service or tribal status at the outset. SCRA protections and ICWA requirements must be brought to the court's attention early in the proceeding, not after pivotal orders have already been made.

This article is general legal information, not legal advice, and does not create an attorney-client relationship. Consult a licensed Colorado attorney for guidance specific to your situation.