In Colorado, the court determines whether to grant a post-decree modification based on whether there has been a “substantial and continuing change in circumstances” since the original decree. Significant changes that may warrant a modification include substantial changes in income, job loss, or a significant change in a child’s needs, such as medical or educational requirements. Relocation of one of the parties, changes in the living conditions, or evidence of substance abuse or domestic violence may also justify modifications. The court focuses on the best interests of the child when considering custody-related modifications and evaluates financial fairness for modifications related to support or maintenance​.

To pursue a post-decree modification, you must file a motion with the court, provide supporting evidence, and potentially participate in mediation. The court will review the case and make a decision based on the presented evidence and the relevant legal standards.