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How to Prove Kinship to CAS When Seeking a Child in Ontario

Asked to show your family connection to a child involved with CAS? Learn what Ontario's rules check, what documents may help and what to do next.

Family Law5 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • The society's checks focus on identity, interviews, the home and records, so ask your caseworker what they need to see to confirm your connection.
  • The society must check who lives in your home, interview you and the child, assess the home and run record checks.
  • If a child is already living with you, the society must evaluate the placement within seven days and document it within 30 days.
  • Documents that show your connection are general good practice, and you should confirm what your local society wants.

If a children's aid society (CAS) is involved with a child in your family, you may be asked to show how you are connected to that child before the society will consider you as a caregiver. That can feel like being asked to prove something obvious, especially when you are worried and the situation is moving quickly.

This article explains what the Ontario rules actually require the society to check, what kinds of documents commonly help, and how to present your information clearly. It is general information, not legal advice, and every society and every case is a little different.

What "proving kinship" really means

People often say "kin" for relatives and close family connections, but the word is the child welfare sector's term rather than a defined one in the Child, Youth and Family Services Act (CYFSA). The Act instead speaks of a relative, an extended family member, or a member of the child's community.

"Extended family" covers people to whom the child is related, including through a spousal relationship or adoption. "Relative" is narrower: a grandparent, great-uncle, great-aunt, uncle or aunt, including through a spousal relationship or adoption. So "proving kinship" usually means showing the society where you fit in that picture and that you can provide a safe home.

Exactly how you show your connection can vary from one society and one case to another, so ask your caseworker what they need to see. If you are unsure, it is worth confirming with a lawyer.

What the society must check

When a placement with a relative or community member is planned before the child moves, the society must evaluate the plan to decide whether you can provide a safe home. It must establish the identity of every person aged 18 or older living in the home, interview the proposed primary caregiver, interview the child privately, and assess the home environment, including its physical aspects.

The society also reviews its own records on every adult in the home, advises the caregiver about police record check and offence declaration requirements, obtains consent to disclose information (including from child welfare authorities outside Ontario), and searches the caregiver's name in the Child Protection Fast Track Information System. If someone lived elsewhere, it requests records from other child welfare bodies.

CheckWhat it involves
IdentityEstablishing who every person aged 18 or older in the home is
InterviewsYou as proposed caregiver, and the child privately
Home assessmentThe home environment, including physical aspects
Record checksSociety records, police record check or offence declaration, and child protection record searches

Documents that may help show your connection

Because no official list exists, the documents below are general practice only. Ask the caseworker what your local society prefers, and do not be discouraged if you cannot find everything. Offering what you have, and explaining what is missing, is usually better than waiting.

Be accurate. Paperwork that does not match what you tell the worker causes delay, and the society will be interviewing you and checking its records in any event.

Timing: what to expect and when

If the placement is planned before the child moves, the child protection worker must document the evaluation within 30 days. After placement, the rules call for a home visit, a caregiver interview and a private child interview within seven days, a second home visit within 30 days, and a review of the placement plan by a society supervisor.

If the child is already living with you when the society learns of it, the society must evaluate the placement within seven days to decide whether you are providing a safe home, using the same kinds of checks, and document the evaluation within 30 days. In an emergency some steps may be skipped, but the society must record the circumstances and reasons.

If there is a court case, the judge at the first court date decides whether the child can be returned to a parent or an extended family member. A court must also consider whether a child can be placed with a relative, neighbour or other member of the community or extended family before ordering the child into society care.

What to do next

If you disagree with how the society has handled your request, you can complain to the society, and the complaint review decision can be reviewed by the Board in some circumstances. A lawyer can explain which route fits your situation.

Frequently asked questions

Do I need a birth certificate to prove I am related to the child?

Whether a birth certificate is needed depends on the society and your situation, so ask your caseworker what they need. A birth certificate is still a common way to show a link, so bring what you have.

Will the society check people who live with me?

Yes. The society must establish the identity of every person aged 18 or older living in the home and review its records on each of them. Tell your worker honestly who lives with you.

How fast will the society decide?

If the child is already with you, the society must evaluate the placement within seven days and document the evaluation within 30 days. For a planned placement, the evaluation must be documented within 30 days.

Does being a relative guarantee I will get the child?

No. The society must be satisfied you can provide a safe home, and the court must consider relative placement but decides what is appropriate for the child. A lawyer can help you understand your options.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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