In 2026, Colorado courts can modify parenting time when the change serves the child’s best interests under the statute. Judges consider a variety of best interests factors and make findings on the record in contested hearings, which is why evidence presentation matters. Some requests are treated as substantial modifications and may involve additional procedural steps or timing limits, depending on what is being changed. If safety is an issue, courts can weigh domestic violence, child abuse, and other serious factors within the best interests framework. Documentation such as school records, medical records, parenting schedules, and credible witness statements can be more persuasive than accusations without proof. A lawyer can help you connect your evidence to the statutory factors so the court sees a clear child centered reason for the modification.