Petitions guide

Stepparent Adoption in Illinois: Steps and Consent

A stepparent adoption makes a stepparent the child's legal parent and ends the legal relationship with the other biological parent. Illinois treats it as a related adoption, which can be simpler than other adoptions, but the consent rules are strict. This guide walks through each step, from consent to the final hearing in the Cook County County Division.

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What a stepparent adoption does

Under Section 17 of the Adoption Act, once the judgment is entered, the parent whose rights end is relieved of all parental responsibility and loses all legal rights as to the child. The parent who joins the petition keeps every parental right and responsibility. The stepparent becomes the child's legal parent, the same as a biological parent. If you want to adopt a stepchild in Illinois, the first question is usually whether the other parent will consent.

That makes adoption very different from guardianship, which leaves parental rights in place, and from a stepparent's limited ability to seek parenting time. The petition can also ask for the name the child will use, so a separate name change case is usually not needed.

Thinking about adopting your stepchild? Call Chicago Family Attorneys at 312-965-5618 or book a free consultation. Initial consultations are free for people seeking to hire an attorney, and your fee is confirmed in writing before you engage the firm.

Who files and the basic requirements

The Adoption Act defines a related child to include a child whose adopting parent is a stepparent by marriage or civil union. Key rules for a related adoption:

  • Both spouses join. Under Section 2, a married petitioner's spouse must be a party, including when one spouse adopts the other spouse's child. The parent spouse's signature and verification on the petition count as that parent's consent under Section 8(b)(5).
  • No 6-month residency rule. The usual requirement of 6 months' Illinois residence does not apply to a related child.
  • File any time. A petition to adopt a related child may be filed at any time, in any Illinois county.
  • The child's consent at 14. Under Section 12, a child who is 14 or older on the date of judgment must consent in writing.

Filing in the Cook County County Division

In Cook County, adoption petitions are heard in the County Division of the Circuit Court, whose main location is the Richard J. Daley Center, not in the Domestic Relations Division. The court's adoptions page lists related adoption, including stepparent adoption, as its own case type with required forms and procedures.

  1. Gather the child's birth certificate, your marriage or civil union certificate, any parentage, custody or support orders, and the other parent's last known address.
  2. Prepare the verified petition. For a related child, Section 5 requires the petitioners' names and residence, the child's name, birth date and sex, each petitioner's relationship to the child, the parents' names and residences if known, the new name requested and any earlier court orders affecting the child's adoption or custody.
  3. Obtain the other parent's acknowledged consent, or plead the ground on which consent is not required.
  4. Serve every parent who has not consented. If a parent cannot be found after diligent inquiry, Section 7 allows notice by publication.
  5. Attend the hearings the court sets, including any contested unfitness hearing.

How long it takes depends mostly on consent. With signed consents and no investigation ordered, a related adoption can move to judgment once service is complete and the return day has passed. Publication adds the weeks the notice must run, and a contested unfitness claim adds evidence, more court dates and a hearing. Bring papers from any other case involving the child, because a custody or support case may be pending in a different division.

Background checks, the hearing and the new birth certificate

The full investigation, often called a home study, that Section 6 requires in other adoptions is not made in a related adoption unless the court orders it in its discretion. Section 13 also lets the court waive a guardian ad litem for the child in a related adoption when the child is not in DCFS care. In practice, the Cook County judge decides whether to order an investigation, background checks or a guardian ad litem in your case.

The 6-month waiting period after an interim order does not apply to a related child. Under Section 14(f), the judgment may be entered any time after service of process and the return day. Adoption files are impounded and opened only by court order.

For a child born in Illinois, the State Registrar of Vital Records establishes a new birth certificate after receiving the certificate of adoption or a certified copy of the order, unless the court, the adoptive parents or the adopted person asks that one not be issued, under 410 ILCS 535/17.

Related adoptions for same-sex spouses

The same rules apply to spouses and civil union partners of any gender. If a child was born during the marriage or civil union, the non-birth spouse may already be a presumed parent under 750 ILCS 46/204. Some families in that situation ask whether a confirmatory adoption also makes sense, which is worth reviewing with a lawyer. See our LGBTQ family law page and our guide on establishing parentage in Illinois.

What the other parent can do

The other parent can sign a consent, refuse, or contest an unfitness claim and present evidence of contact, support or efforts to stay involved. A parent who signed a consent can try to void it only for fraud or duress, and only within 12 months. A parent who was never served properly may challenge the judgment later, which is one reason careful notice matters.

Common mistakes to avoid

  • Using a notarized letter as a consent. The consent must follow the Section 10 form and acknowledgment rules.
  • Forgetting the child's own consent. A child 14 or older must consent in writing.
  • Assuming nonpayment of support alone proves unfitness. Unfitness is proved by clear and convincing evidence on specific grounds.
  • Filing in the wrong division. Adoptions in Cook County go to the County Division.
  • Skipping notice. Every parent who has not consented must be served.

How Chicago Family Attorneys can help

Chicago Family Attorneys handles family law only from 53 W Jackson Blvd, Suite 752, in the Chicago Loop, serving Cook, DuPage, Will and Lake Counties. Attorney Aaron Korson can review whether consent is available, prepare the petition and consent documents, arrange service or publication, and appear at the hearings. Learn more on our adoption services page.

  • Full representation. An initial payment of $1,500 to $2,500, then $500 to $650 per month beginning 30 days after the initial payment while representation remains active.
  • Limited scope. A flat fee for a defined task, such as preparing specified adoption documents or appearing at a specified hearing, quoted after a consultation.

Court filing costs, any guardian ad litem fees, background check charges and publication costs are separate. See adoption attorney costs, and if guardianship may fit better for now, read how to get guardianship of a child in Illinois.

Ready to discuss a stepparent adoption? Call 312-965-5618 or book a free consultation. Have the child's birth certificate, your marriage certificate and any custody or support orders available. Booking does not create an attorney-client relationship.

Stepparent adoption

Frequently asked questions

Clear answers to help you understand the issue and prepare your next step.

What happens when a stepparent adopts a child?

The stepparent becomes the child's legal parent. Under Section 17 of the Adoption Act, the other biological parent is relieved of all parental responsibility and loses all legal rights as to the child, while the parent who joined the petition keeps every parental right. For a child born in Illinois, a new birth certificate can be issued.

Can a stepparent adopt without the biological father's consent in Illinois?

Only if the court finds that consent is not required. One basis is a finding, by clear and convincing evidence, that the father is unfit under a ground in Section 1(D). Other exceptions include a man who is not the biological or adoptive father or a father who signed a valid waiver.

Is a home study required for a stepparent adoption in Illinois?

Not automatically. Section 6 says the investigation is not made for a related child unless the court orders it in its discretion. The judge can still order an investigation or background checks, and can appoint or waive a guardian ad litem for the child.

Can you do a stepparent adoption without a lawyer?

People can represent themselves in Illinois courts, and the Cook County court's adoptions page lists legal aid and referral resources. The consent, acknowledgment, notice and unfitness rules are technical, though, and a mistake can delay the case or leave the judgment open to challenge.

How much does it cost for a stepparent to adopt a stepchild?

Costs depend mostly on whether the other parent consents. Court filing fees, publication costs and any guardian ad litem fees vary and are separate from attorney fees. Our adoption cost page explains full representation and limited-scope options, and the fee is confirmed in writing before you engage the firm.

Where is a stepparent adoption filed in Cook County?

In the County Division of the Circuit Court of Cook County, whose main location is the Richard J. Daley Center. Adoptions are not heard in the Domestic Relations Division, even if a related custody or support case is pending there.

Published .

General information, not legal advice for your situation. This article describes Illinois law and Cook County court procedure as of October 18, 2026. Reading it does not create an attorney-client relationship. Laws, court rules and judges' standing orders change, so talk with a lawyer about your situation before you act.