If you want to change a custody or parenting-time order in Massachusetts, the law requires more than just being unhappy with the current plan. The court will only make changes if two conditions are met. First, there must be a material and substantial change in circumstances since the original order was entered. Second, the change must be best for the child.
What counts as a material and substantial change?
Several situations might qualify as a significant change, according to legal sources and court forms. For example:
- A parent gets a new job that involves frequent out-of-state travel or a major schedule change.
- One parent moves far away, making the current parenting schedule hard to follow.
- The child has new mental, emotional, medical, or educational needs that the current plan doesn’t meet.
- A parent’s health declines seriously, or they can no longer fulfill their custodial duties.
These examples don’t cover every possibility. The main question is whether the changes are so material and substantial that the original order is no longer in the child’s best interest.
Best-interests standard still applies
Even if you show a significant change, the court won’t approve a modification unless it benefits the child. Massachusetts judges look at factors like each parent’s ability to care for the child, the child’s emotional and physical health, the stability of their school and home life, and their relationship with both parents.
How to start the process
You or both parents can file a formal request with the local Probate and Family Court. If only one parent wants the change, you usually file a Complaint for Modification. If both parents agree, you can file a joint petition. Include updated details, such as work schedules, living arrangements, school records, or health care documents, to support your claim of changed circumstances.
Key points to understand
You need to clearly show how circumstances have changed significantly since the original order. You must also explain how the proposed change is best for the child. Even if both parents agree, the court must approve the change to make it official. By following these steps, you can make a strong case for a modification while keeping your child’s well-being first and following Massachusetts law.

