Proving You Need Full Custody in Illinois

 Posted on July 31, 2026 in Child Custody

Illinois law does not use the term "full custody." One parent may receive sole authority over major decisions and most of the parenting time. However, a court generally needs proof that the child faces serious harm before it can supervise, limit, or end the other parent’s parenting time.

If you believe your child's other parent cannot safely exercise parenting time, an Arlington Heights, IL child custody attorney can discuss your options in 2026. 

What Evidence Do Illinois Courts Require to Award Full Custody?

Illinois law presumes that both parents are fit. A court generally cannot restrict a parent’s time with a child unless that time would seriously harm the child’s physical, mental, moral, or emotional health. Under 750 ILCS 5/602.7 of the Illinois Marriage and Dissolution of Marriage Act, a court will not restrict a parent's time with a child without proof that the parent seriously endangers the child. 

The evidence you need depends on what you are asking the court to grant. You may be seeking sole decision-making authority, most of the parenting time, or limits on the other parent’s time. The following types of evidence tend to carry the most weight in these cases:

• Police reports. A police report may document allegations, observations, injuries, witness statements, or prior police involvement. Its value depends on what it contains and whether the information can be supported by other admissible evidence.

• Criminal records. Convictions involving child abuse, sexual offenses, domestic violence, or child endangerment can strongly support restrictions on a parent's rights. A history of family violence or serious substance abuse may also strengthen your case.

• Witness testimony. Teachers, school nurses, social workers, childcare providers, relatives, and neighbors may testify about conduct or conditions they personally observed.

• Medical and mental health records. Records from your child's doctor or therapist can show signs of physical or psychological harm. These records support your claim that the other parent should not have unsupervised time with your child.

According to the Administration for Children and Families, about 3.1 million children received a Child Protective Services response in fiscal year 2023, and 546,159 of them were confirmed victims of maltreatment. A CPS report alone does not necessarily prove serious endangerment. Courts consider the report along with testimony, records, and other evidence concerning the child’s safety.

Can a Parent Get Emergency Protection Before a Custody Hearing?

A parenting case can take months to resolve, so Illinois law provides ways to protect a child while the case is pending. When qualifying abuse has occurred, an attorney may request an emergency order of protection. Under 750 ILCS 60/217, the court may grant emergency relief without notifying the respondent beforehand when the legal requirements are met and notice would create additional hardship or risk of harm. An emergency order generally lasts up to 21 days.

Alongside an emergency order of protection, your attorney may also ask the court for temporary orders addressing parenting time or decision-making responsibilities while the case is pending. These temporary orders help protect the child until the court can fully consider the evidence.

An emergency order of protection is a legal safeguard, not a physical one, so it works best as part of a broader safety plan rather than a stand-alone solution. If you or your child are in immediate danger, contact local law enforcement right away in addition to pursuing the order.

What Restrictions Can an Illinois Court Place on a Dangerous Parent?

If the court finds serious endangerment or significant impairment of the child’s emotional development, Illinois law gives the judge several ways to protect the child. Under 750 ILCS 5/603.10 of the Illinois Marriage and Dissolution of Marriage Act, the court can reduce or eliminate that parent's decision-making authority, parenting time, or both.

Judges can also order supervision during any remaining visits or require the parent to complete a treatment program before regaining unsupervised time. Many full custody cases use more than one of these tools at once rather than relying on a single restriction.

What Happens After an Illinois Court Grants Full Custody?

An order giving one parent sole decision-making authority or most of the parenting time does not automatically end the other parent’s contact with the child. If unrestricted parenting time would put the child in danger, the court may require supervision or other safety measures. These may include visits supervised by an approved adult or visitation center, limits on where or how long visits can take place, or monitored phone or video calls.

These restrictions may remain in place as long as the danger continues. Either parent may ask the court to change the parenting-time order if circumstances change greatly. A parent who completes court-ordered treatment or counseling may ask to remove or reduce the restrictions. However, the parent must still show that circumstances have changed and that the requested change is in the child’s best interests.

Schedule a Free Consultation with a Rolling Meadows, IL Full Custody Attorney

Attorney Donald J. Cosley personally handles every part of your case. When you call with questions about your case, you will speak with him, your legal representative, and will not be passed off to a paralegal. Contact the Arlington Heights, IL child custody lawyer at Cosley Law Office for a free consultation. Call 847-253-3100 today.