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Canadian Mortgage Glossary · Closing & Legal

Power of Attorney

Definition

A power of attorney (POA) is a legal document in which one person, the grantor, authorizes another person, the attorney, to act on their behalf — including, in some circumstances, signing mortgage or real estate documents — within the scope and conditions the document sets out.

Also known as: POA · attorney for property Updated: August 2, 2026 Reviewed by the Treadstone underwriting desk
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When can a power of attorney be used to sign a mortgage?

Not every power of attorney is the same: a general power of attorney typically ends if the grantor becomes mentally incapable, while a continuing or enduring power of attorney for property is specifically drafted to remain valid through incapacity. Provincial legislation, such as Ontario's Substitute Decisions Act, 1992, sets the requirements for a valid power of attorney for property, and requirements vary by province.

Because using a POA to sign a mortgage is a recognized elder-financial-abuse and fraud risk, lenders and lawyers scrutinize these files more closely than a direct signature — commonly requiring a lawyer's opinion confirming the POA is genuine and still in effect, and confirmation the grantor is alive and, where relevant, had capacity when the document was signed. Brokers should flag a POA situation with the lender and lawyer as early as possible, since it can add conditions or delay to closing.

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How it’s used in Canada

Two broad types: a general power of attorney typically ends if the grantor becomes mentally incapable, while a continuing or enduring power of attorney for property is specifically drafted to remain valid through incapacity.

Provincial legislation governs the form: requirements for a valid power of attorney for property are set by provincial statute, such as Ontario's Substitute Decisions Act, 1992, and requirements vary by province.

Lenders scrutinize POA-signed mortgages: because of the added fraud and elder-abuse risk, lenders commonly require a lawyer's opinion confirming the POA's validity before accepting a document signed on someone else's behalf.

A known fraud vector: link title fraud — a forged or abused power of attorney is a recognized method fraudsters use to transfer or encumber a property without the true owner's knowledge.

Sources

  1. 1.FCT — Spotting and stopping power of attorney abuse and fraud fct.ca
  2. 2.Financial Consumer Agency of Canada — Mortgages canada.ca

Definitions reflect Canadian federal and provincial rules as of the “Updated” date above. Not advice for any specific file.

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