What does sole custody mean under Illinois law?
Illinois parenting law uses allocation of parental responsibilities, including significant decision-making and parenting time. Section 602.5 allows significant decisions to be allocated to one or both parents by issue. The listed subjects include education, health, religion and extracurricular activities. Nothing in that section requires allocating significant decisions to each parent.
Parenting time is addressed separately under Section 602.7. Receiving sole significant decision-making does not automatically eliminate the other parent’s time with the child. It also does not terminate that parent’s legal relationship with the child.
Describe the specific relief you want: authority over a disputed medical decision, a different school-week schedule, safer exchanges or another concrete change. A Chicago child custody lawyer can help connect that request to the appropriate legal standard.
What evidence supports sole decision-making?
The child’s best interests govern an initial allocation under Section 602.5. Relevant considerations include the child’s needs, past participation in significant decisions, ability to cooperate, level of conflict affecting shared decisions, adjustment to home and school, and any applicable safety concerns. No single factor promises a particular result.
Organize evidence around the decision that must be made. For example, explain the educational or medical issue, the information shared, the responses received and how the disagreement affects the child. Use relevant records and complete communications rather than isolated accusations.
- Current orders and the child’s actual schedule.
- School or care records relevant to the requested decision.
- A dated history of efforts to resolve the issue.
- A specific proposal for decision-making and communication.
- Evidence of safety concerns where they apply.
A request for sole decision-making does not universally require proving the other parent “unfit.” That label can refer to different legal proceedings. Explain the requested allocation and its effect on the child.
How do you file for sole or full custody in Illinois?
First determine whether there is an existing divorce, parentage or parenting case. Give counsel every relevant order and case number. If the child has lived in another state or another court has entered an order, jurisdiction needs to be checked before a new filing.
The pleading and process depend on whether you seek an initial allocation, modification of an existing order or a safety restriction. Parentage may also need to be addressed. Our Chicago paternity service explains that related representation.
Prepare the appropriate petition or motion, supporting facts and proposed relief, then follow the applicable filing, notice and service procedures. An unanswered filing is not a guarantee of sole custody. The court still determines what orders it may properly enter on the record presented.
Keep filed copies and track the next hearing and response obligations. Ask whether interim arrangements, mediation or other court-directed steps apply instead of assuming that every case follows an identical sequence.
What if a custody order already exists?
Modification is different from an initial allocation. Section 610.5 contains separate rules affecting decision-making and parenting time, including timing restrictions and exceptions for certain decision-making requests. Bring the date and full text of the existing order to counsel.
In Reynolds v. Reynolds, 2026 IL 132627, filed September 24, 2026, the Illinois Supreme Court held that a motion seeking to change parenting time only is governed by Section 610.5(a), rather than the substantial-change standard in Section 610.5(c). The parenting-time provision requires changed circumstances that make modification necessary for the child’s best interests. The court’s website currently lists the opinion as a slip opinion, which can be revised.
Read our guide to Reynolds and parenting-time modification for the decision’s practical limits. This distinction makes the requested relief important. A schedule-only request and a request to transfer major decision-making should not be described interchangeably. Discuss the existing judgment with our parenting-order modification lawyers.
When are supervision or other safety restrictions appropriate?
Section 602.7 presumes both parents are fit and sets a serious-endangerment standard for parenting-time restrictions. Section 603.10 addresses protective orders after a hearing and the required findings concerning serious endangerment or significant impairment of emotional development. These requirements differ from the ordinary allocation of significant decisions.
Describe the actual risk, when it occurred, who observed it and the protection requested. A supervision proposal should explain how safe contact would work. A concern about transportation may require a different remedy from a concern about overnight care.
For urgent circumstances, review emergency child custody representation. If a child faces immediate danger, contact emergency services. Preserve relevant records and obtain prompt advice about the current order and the next exchange.
Does absence or missed parenting time automatically end rights?
No fixed period of missed visits automatically turns an ordinary parenting dispute into a termination of parental rights. Lack of involvement may be relevant evidence, but the court must apply the law governing the specific proceeding.
Do not confuse a parenting modification with adoption or termination. Our parental-rights termination guide explains why consent, adoption and support require separate analysis. In a custody consultation, focus on the current order, the care history and the arrangement that would meet the child’s needs now.
Prepare for a Chicago sole-custody consultation
Bring the current judgment, pending filings, hearing dates and the most relevant evidence. Write a short proposed schedule and identify which significant decisions should change. Separate documented facts from concerns that still need to be investigated.
Ask which legal standard applies, whether the case requires an initial petition or a modification, how evidence should be collected and what the proposed representation includes. Discuss fees and likely outside costs before work begins. No lawyer can promise a custody result.
Schedule a free initial consultation if you are seeking to hire a lawyer, or call 312-965-5618. Representation is separate, with scope and fees confirmed in writing.