Adult Adoption in Illinois: Legal Process, Costs, and Inheritance Rights for Stepchildren

The Benefits of Adult Adoption in Illinois

Adult adoption in Illinois is a highly rewarding legal process that officially recognizes a parent-child relationship that already exists in the heart. Governed primarily by the Illinois Adoption Act, 750 ILCS § 50/3, adopting someone who is 18 years or older is significantly simpler than adopting a minor. Whether you reside in Naperville, Rockford, or Chicago, the court process bypasses many of the hurdles associated with minor adoptions. Most importantly, biological parent consent is entirely waived, meaning an estranged biological parent cannot interfere with the process.

Common Reasons for Adult Adoption

Families choose adult adoption for various emotional and practical reasons. Consulting with an attorney from our US Lawyer Directory can help you ensure all specific legal requirements are met based on your unique scenario.

Formalizing Bonds with Stepchildren

Many stepparents help raise a child but cannot legally adopt them during their minority because a biological parent refuses to relinquish their rights. Once the stepchild turns 18, they have the legal right to consent to their own adoption. This allows families to finally make their relationship official in the eyes of the law.

Adopting Former Foster Children

Youth in foster care sometimes age out of the system at 18 without finding a permanent adoptive home. Former foster parents or mentors often choose to adopt these young adults to provide them with a legally recognized family, a sense of belonging, and a permanent support system as they navigate adulthood.

Protecting Adults with Developmental Disabilities

For individuals with severe developmental or cognitive disabilities, an adult adoption can be a crucial step in ensuring lifelong care. It allows the adoptive parents to secure next-of-kin status, making it easier to make medical decisions, manage care plans, and provide long-term housing stability.

Securing Inheritance and Probate Rights

One of the most critical legal impacts of adult adoption in Illinois involves probate law. Under the Illinois Probate Act, 755 ILCS § 5/2-4, an adopted adult is treated as an heir of the adopting parent. Precedents like In re Estate of Brittin, 279 Ill. App. 3d 512 (IL Appellate Court 1996) examine the inheritance rights of adult adoptees. Under 755 ILCS § 5/2-4(a), if an individual is adopted after age 18 and never resided with the adoptive parent before turning 18, they inherit directly from the adopting parent, but not from the parent's lineal or collateral kindred. Additionally, while adoption generally severs inheritance rights from biological parents, a vital exception exists under 755 ILCS § 5/2-4(d)(1): in a stepparent adoption, inheritance rights between the adopted person and their custodial biological parent married to the stepparent remain fully preserved.

Step-by-Step Process in the State of Illinois

Because there is no need to terminate parental rights, the process in the Illinois Circuit Court is straightforward. Follow these general steps to complete your adult adoption.

Step 1: Draft the Petition and Consents

You must prepare the Form CCCO 0520, Illinois, Circuit Court of Cook County, County Division Action Cover Sheet. Unlike minor adoptions, the most vital document is the Form CCCO 0004, Illinois, Circuit Court of Cook County, Consent of a Person Aged Fourteen or Older, which must be signed by the adult being adopted. If the adoptive parent is married, their spouse must generally join in the petition.

Step 2: File at the Local Courthouse

Submit your documents to your local court, such as the Cook County Circuit Court Clerk, Chicago, Will County Circuit Court Clerk, Joliet, or the clerk in your specific county. You will pay a standard civil filing fee.

Step 3: Attend the Hearing

The court will schedule a brief hearing. Because home studies and background checks are generally waived for adult adoptions under Illinois law, this hearing is usually a joyous formality. The judge will ask a few questions to confirm that all parties understand the legal implications and are entering the agreement willingly.

Step 4: Amend the Birth Certificate

After the judge signs the Final Judgment of Adoption, you can send a certified copy to the Illinois Department of Public Health, Springfield. For a small fee, they will issue a new birth certificate listing the adoptive parents, and the adoptee can officially change their last name if they choose.

How Much Does it Cost in Illinois?

The costs for adult adoption are highly predictable since they are rarely contested.

How Long Does the Process Take?

In most Illinois counties, an adult adoption can be finalized in as little as 45 to 90 days from the date the petition is filed, heavily depending on the judge's calendar.

Frequently Asked Questions (FAQ)