Custody Issues for Blended Families in Illinois

 Posted on September 15, 2025 in Child Custody

When families come together after a divorce or separation, it can complicate child custody, known as parental responsibilities in Illinois. New spouses, stepchildren, and extended relatives may all play a role in a child’s life. While blended families can create loving and supportive environments, they can also raise questions about how custody arrangements work in Illinois. A Rolling Meadows, IL parental responsibilities lawyer can help you understand how the law applies to your unique family.

Do Custody Arrangements Change in Illinois When Families Blend?

Custody orders in Illinois are not automatically changed when a parent remarries or enters a blended family. Once a court order is in place, it remains valid until a judge modifies it. Under 750 ILCS 5/610.5, either parent can request a modification if there has been a substantial change in circumstances. For example, if a parent moves in with a new partner in another city, the existing parenting plan may need to be updated to account for travel, school enrollment, and daily routines. Keep in mind that courts will not modify custody arrangements simply because a parent remarries. Judges focus on whether the change truly impacts the child’s stability and well-being.

How Do Stepparents Fit Into Parenting Time?

Stepparents often form strong bonds with their stepchildren, but in Illinois, they do not automatically have custody or parenting rights. The law recognizes parental rights primarily for biological or adoptive parents. However, stepparents can play an important role in a child’s life, especially in cooperative families.

In some situations, a stepparent may seek visitation rights. According to 750 ILCS 5/602.9, non-parents, including stepparents, may petition for visitation if they can show that denial of access would harm the child’s well-being. These cases are not easy to win, and courts carefully evaluate whether granting visitation is truly in the child’s best interests.

What Happens When Parents in Blending Families Do Not Get Along?

Tension often arises when parents from different households disagree. However, Illinois courts encourage cooperation and require parents to follow parenting plans. Under 750 ILCS 5/602.10, parents must submit a written parenting plan outlining responsibilities, schedules, and decision-making authority. If parents cannot agree, the court will step in and create a plan based on the child’s best interests. If disagreements continue, mediation or court intervention may be necessary. Judges often remind parents that children benefit when adults set aside personal conflicts and focus on providing stability.

Understanding the "Best Interests of the Child" Standard

Illinois courts make custody decisions based on what is in your child’s best interests. Judges look at your child’s bond with each parent, their ties to school and community, and your ability to meet their daily needs. They also consider whether you are willing to encourage a strong and healthy relationship between your child and the other parent.

Under 750 ILCS 5/602.7, the court must divide parental responsibilities in a way that supports your child’s physical, emotional, and developmental well-being. If your blended family provides a caring and stable environment, that may work in your favor. On the other hand, if conflict between households is affecting your child, the court may adjust parenting arrangements to create a more stable environment.

Contact an Arlington Heights, IL Child Custody Attorney

If you are dealing with disputes over parenting time, stepparent rights, or modifications to existing orders, an experienced attorney can help you understand your options.

At Law Offices of Donald J. Cosley, you can count on personal attention from start to finish. Attorney Don Cosley takes the time to handle every aspect of your case himself. When you have questions or concerns, you will speak directly with him, not an assistant. Call 847-253-3100 and contact a Rolling Meadows, IL parental responsibilities lawyer who cares. Your initial consultation is free.