How Long Does It Take to Complete an Adult Adoption?

Quick Answer

Adult adoption typically takes 3–12 months from filing the petition to receiving the final adoption decree. Most uncontested cases in straightforward states wrap up in 3–6 months. The process is significantly simpler than child adoption — there are no home studies, no placement agencies, and no mandatory waiting periods in most states.

Timeline by State Complexity

State Category	Timeline	Examples
Streamlined states	3–4 months	California, New York, Texas
Moderate states	4–6 months	Florida, Pennsylvania, Ohio
States with added requirements	6–12 months	Alabama, Nebraska, some require biological parent consent
States that prohibit or restrict	N/A	Arizona (requires 1+ year relationship), some states limit to stepparent situations

Step-by-Step Process

1. Confirm eligibility — Most states require the adopting parent to be older than the adoptee, though the age gap varies (some require 10–15 years). Both parties must consent.
2. Hire an attorney — While not legally required in all states, an adoption attorney navigates state-specific rules and drafts the petition.
3. File the adoption petition — Submit the petition to the family court or probate court in the county where the adoptive parent or adoptee resides.
4. Notify interested parties — Some states require notification to biological parents, even for adult adoptees. This step can add 30–60 days.
5. Attend the court hearing — Both the adoptive parent and the adult adoptee appear before a judge. The hearing is typically brief (15–30 minutes).
6. Receive the adoption decree — The judge signs the final order. Some courts issue it the same day; others mail it within 1–4 weeks.
7. Update legal documents — Apply for a new birth certificate, update Social Security records, and change any other legal documents as needed.

Requirements by State

Requirement	Common?	Details
Consent of adoptee	Always	The adult being adopted must consent
Consent of adoptive parent's spouse	Usually	Most states require spousal consent
Consent of biological parents	Varies	Some states require it; others waive it for adults
Age gap requirement	Sometimes	10–15 years older in some jurisdictions
Home study	Rarely	Almost never required for adult adoption
Background check	Sometimes	A few states require it
Residency requirement	Usually	File in the state/county where one party resides

Common Reasons for Adult Adoption

• Formalizing a stepparent relationship — Creating a legal parent-child bond with an adult stepchild.
• Inheritance and estate planning — Adopted children have the same inheritance rights as biological children.
• Caregiving relationships — A long-term caregiver or mentor formalizes the relationship.
• Cultural or personal significance — Creating a legal family bond that reflects an existing emotional one.

What Can Delay the Process

• Biological parent objection — In states that require biological parent consent, a refusal can stall or block the adoption.
• Court scheduling backlogs — Family courts in large metropolitan areas may have 2–4 month waits for hearing dates.
• Incomplete paperwork — Missing notarization, incorrect filing fees, or incomplete petitions get returned for correction.

Cost Breakdown

Expense	Typical Cost
Attorney fees	$800–$3,000
Court filing fee	$150–$500
Certified copies of decree	$20–$50
New birth certificate	$15–$50
Background check (if required)	$30–$75
Total	$1,000–$3,500

Uncontested adult adoptions without an attorney can cost as little as $200–$500 in filing fees, but legal representation is recommended to avoid procedural errors that cause delays.

Adult Adoption vs. Child Adoption

Feature	Adult Adoption	Child Adoption
Timeline	3–12 months	1–5 years
Home study required	No	Yes
Agency involvement	No	Usually
Court hearing	15–30 minutes	Longer, more involved
Cost	$1,000–$3,500	$20,000–$50,000+
Background checks	Sometimes	Always