Adult Adoption in NSW: Legal Recognition of Lifelong Family Bonds

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It may provide legal recognition to a parent-child relationship that has developed during the adoptee’s childhood, including a relationship with a step-parent, relative or long-term caregiver.  

An adult adoption order recognises and protects a legal parent-child relationship with the adoptive parent or parents. For adults who grew up with a step-parent, grandparent, other relative, or long-term caregiver, it can be deeply meaningful to have this bond formally recognised in a dignified, and legally clear manner. It can also affect legal parentage, birth records, names, inheritance rights and estate-planning arrangements.

In New South Wales, adult adoption is governed by the Adoption Act 2000 (NSW) (“the Act”). Different requirements apply to the adoption of an adult and the adoption of a person under 18.

Can You Adopt an Adult in NSW?

Yes. The Supreme Court of New South Wales may make an adoption order for a person aged 18 or older where the requirements of the Act are met. The key requirement is that the person to be adopted must have been brought up, maintained and educated by the applicant or applicants as a child (before the proposed adoptee turned 18).

Put simply, adult adoption is intended for cases where the adult adoptee was already part of the applicant’s family in a genuine, day-to-day way during their childhood.

As adult adoption is a Court-based and evidence-driven process, success in obtaining an adoption order depends on presenting the history of the relationship between the proposed adoptee and applicant/s clearly, and providing evidence that addresses each statutory requirement.  

What are the Benefits of Adult Adoption?

Adult adoption brings both significant legal consequences and profound symbolic recognition.

Symbolic and personal benefits

• Belonging and identity: For many, adult adoption acknowledges a parent–child bond that has existed for many years.
• Recognition of a parental relationship: It honours the person who performed a substantial parental role and the adult who experienced that care.
• Certainty: It confirms that the relationship is legally recognised, rather than solely understood at a personal or social level.
• Shared family identity: For some families, adoption may provide a meaningful sense of continuity and belonging.

Practical legal outcomes

An adoption order has important legal effects. Under the Act, an adoption order:

• Generally makes the adopted person the legal child of the adoptive parent(s) and alters the person’s existing legal family relationships;
• as a general rule, adoption ends the legal parent–child relationship between the adopted person and their birth parents. Statutory exceptions may apply, including in some step-parent adoptions where the adoptive parent is the spouse or de facto partner of on of the adoptee’s birth parents. In that situation, the legal relationship with that birth parent may be preserved. The precise effect of the order depends on the parties’ circumstances and the applicable provisions of the Act. 
• The order may also affect legal relationships with other members of the birth family. 

In addition, adult adoptions typically result in the following outcomes for adult adoptees and their families:

Outcomes & their Effects
Legal parentage	An Adoption Order creates a legal parent-child relationship with the adoptive parent or parents and may end or alter existing legal relationships with the birth family, subject to statutory exceptions.
Updated birth records	The Act allows for updated post-adoption birth documentation, including integrated and amended birth certificates based on the registered adoption record.
Inheritance and intestacy effects	Adoption can affect intestacy rights and/or the interpretation or operation of wills, trusts, family provision rights and other estate planning arrangements.
Name outcomes for adults	An adult adoptee’s name does not necessarily change merely because an adoption order is made. Any proposed change should be addressed through the procedure available under the Act, the Court’s orders and applicable Registry requirements.

How Does the Adult Adoption Process Work in NSW?

Applying to the Supreme Court can feel daunting, especially without the right support by your side. The good news is that adult adoption applications are largely about telling a clear, truthful story and demonstrating that the legal requirements are satisfied.

Here is a high-level overview of the adult adoption process in NSW:

1. Confirm eligibility
   • Is the person to be adopted an adult (18+)?
   • Was the adoptee brought up, maintained and educated by the applicant or applicants as a child (before turning 18)?
   • Does the adult adoptee freely and informedly consent to the proposed adoption?
   • Is the applicant or applicants entitled to apply for an adoption order?
   • Is the necessary connection to NSW established?
2. Prepare the application
   • The application is made in the Supreme Court of NSW.
   • The paperwork is supported by evidence explaining the family relationship, the history of care, and why the adoption is sought now.
3. Gather supporting documents and evidence
   • Typically, this includes affidavit evidence addressing the childhood care arrangement, the nature of the relationship, and the adult adoptee’s wishes and understanding of the order’s consequences.
   • Where relevant, additional documents, such as marriage and birth certificates, may be required to satisfy procedural steps.
4. Address notice (if required)
   • The consent of the adult adoptee’s birth parents is generally not required for an adult adoption, separate notice or service questions may still arise depending on the circumstances and the Court’s requirements.
   • The Court has power to dispense with notice where appropriate.
5. File application and supporting documents
   • The prepared application, affidavits and other supporting documents are then filed with the Supreme Court, together with the supporting documents.
6. Court consideration and determination
   • The Supreme Court considers the evidence and decides whether all statutory requirements have been established in order to make the adoption order.
   • Adoption matters are subject to statutory privacy, confidentiality and publication restrictions. Identifying information about the parties must not be published except as permitted by law or authorised by the Court.
7. After the order
   • A new legal parent-child relationship is created.
   • Birth records may be updated in accordance with the Act’s framework for post-adoption certificates and registration outcomes.
   • Wills, trusts, superannuation nominations and other estate-planning arrangements should be reviewed where appropriate.

Throughout the process, the focus remains on establishing the legal requirements through reliable evidence and presenting a respectful, accurate account of a family bond that already exists.

How Elringtons Lawyers Can Help with Adult Adoption in NSW

At Elringtons Lawyers, we understand that adult adoption is about people, identity and belonging—not just legal process. These matters often involve deeply personal histories, blended families, and relationships built through years of care rather than paperwork.

Our Adult Adoption Services

Elringtons Lawyers can assist with:

• Compassionate guidance: We approach every adult adoption matter with sensitivity and respect, mindful that each family’s circumstances are unique.
• Attention to detail: Adult adoption is Court-based and evidence-dependent. We ensure your application is prepared carefully, with proper supporting material and a narrative aligned to the Adoption Act 2000 (NSW).
• Relevant experience: Our team is familiar with the practical steps and issues common to NSW adult adoption applications. We explain each stage of the process and work to reduce avoidable delay and uncertainty.

If you are considering adult adoption in New South Wales to honour a step-parent relationship, formalise a long-term caregiving bond, or bring legal clarity to your family structure, Elringtons Lawyers can help.

Contact us for a consultation to discuss eligibility, the evidence needed and how we can assist you with preparing your Supreme Court application.