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Does the Other Parent Have to Consent to a Stepparent Adoption in Ontario?

See whose consent Ontario requires for a stepparent adoption, and what a court can do if the other parent refuses or cannot be found.

Family Law4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 1, 2026
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Key takeaways
  • Generally every parent must consent in writing to the adoption of a child under 16, and the legal definition of parent is wide.
  • If a parent refuses or cannot be found, the court may dispense with their consent if that is in the child's best interests.
  • A consent can be withdrawn in writing within 21 days of giving it.

The most common worry in a stepparent adoption is the other biological parent. Must they agree? What if they say no, or no one has heard from them in years?

Ontario's Child, Youth and Family Services Act, 2017 (CYFSA) sets out who must consent and when a court can step in. This article explains the main rules in plain language. The details turn on your facts, so a lawyer can confirm how they apply to you.

Who must consent

An adoption order for a child under 16 cannot be made without the written consent of every parent. The same applies to a child 16 or older who has not withdrawn from parental control.

'Parent' has a broad meaning here. It includes a parent under the Children's Law Reform Act, a person with lawful custody of the child, and a person who has shown a settled intention within the prior 12 months to treat the child as a child of their family. So the people whose consent is needed may be more than the two birth parents.

Special rules for young people and adults

The court may dispense with the child's own consent if getting it would cause emotional harm, or if a developmental disability makes the child unable to consent. A consent given by someone under 18 is not valid unless the Children's Lawyer is satisfied that it is fully informed and reflects that person's true wishes.

If the person being adopted is an adult, the rule requiring every parent's consent does not cover them. The adult's own written consent is required.

What if the other parent refuses or cannot be found

A refusal is not always the end of the road. If a parent refuses consent or cannot be found, the court may dispense with a required consent, other than the child's or a Director's, if that is in the child's best interests.

There is a safeguard. The person must have received notice of the proposed adoption, or a reasonable effort to give notice must have been made. Courts expect real efforts to reach a missing parent, so keep a record of what you have tried.

If consent was dispensed with in this way, no adoption order may be made until the appeal period has passed or any appeal has been decided. That can add time to the process.

Timing and withdrawing consent

A parent cannot give consent to an adoption before the child is seven days old. Where a society or licensee is involved, it must tell the parent about the right to withdraw consent, and the parent must get a chance to seek counselling and independent legal advice.

A person who consented may withdraw the consent in writing within 21 days after giving it. After that, the court may allow a late withdrawal if that is in the child's best interests, and if the person had custody, the child is returned to them. Late withdrawal is not available if the child has been placed for adoption and remains in the care of the person the child was placed with.

SituationWhat the Act says
Parent withdraws within 21 daysAllowed, in writing
Parent wants to withdraw laterCourt may allow it if in the child's best interests
Child already placed and staying in that homeLate withdrawal not available
Consent dispensed with by the courtNo order until appeal period passes or appeal is decided

What to do next

Frequently asked questions

Can a stepparent adoption go ahead if the other parent says no?

Possibly. The court may dispense with a parent's consent if that is in the child's best interests, provided the parent received notice or a reasonable effort to give notice was made. The outcome depends on the facts.

What if I do not know where the other parent is?

The court may dispense with consent if a parent cannot be found, but a reasonable effort to give notice must have been made. Keep a record of your efforts.

Does my child have to agree?

A person aged seven or older must give their own written consent, after a chance to get counselling and independent legal advice. The court may dispense with it in limited cases, such as emotional harm or a developmental disability.

Can a parent change their mind after signing?

A person may withdraw consent in writing within 21 days after giving it. Later withdrawal needs the court's permission and depends on the child's best interests.

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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