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Can I Assume Someone's Mortgage in Alberta? Consent and Liability

Learn how taking over an existing mortgage works in Alberta, including lender consent, the paperwork on title and what happens to the seller's liability.

Real Estate4 min readTSLBy the Treadstone Law Team · AlbertaUpdated November 13, 2026
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Key takeaways
  • A registered mortgage is only security over the land, so the borrower stays the registered owner until title is changed.
  • Whether you can take over a mortgage depends first on the lender's agreement and the mortgage terms, so get the lender's position in writing.
  • If the existing mortgage is replaced, it is discharged and the new lender is added to title.

Taking over a seller's or relative's existing mortgage can look simple: keep the payments and the interest rate, and move on. In practice, a mortgage is a contract between the borrower and the lender, and the lender has a say in who stands behind it.

This article explains the general picture in Alberta: what a mortgage on title is, why lender consent matters, what paperwork may be involved, and why the original borrower's responsibility needs a clear answer before anyone signs.

This article covers the law of Alberta.

What a mortgage is on title

Under the Land Titles Act, a mortgage is a charge on land created merely to secure a debt or loan. A registered mortgage has effect as security only. It does not operate as a transfer of the land, so the borrower stays the registered owner.

That matters when someone wants to take over a mortgage. The debt, the charge on title and the ownership of the land are separate pieces. Moving one of them does not automatically move the others, which is why each piece needs its own paperwork.

The lender's consent comes first

Whether a mortgage can be taken over by someone else depends on the mortgage contract and on the lender's willingness to accept the new person. The lender will usually want to review your income, credit and the property before agreeing. Because terms differ from lender to lender, a lawyer can confirm what your particular mortgage allows.

The paperwork that may be involved

The documents depend on how the deal is structured. If the lender agrees to keep the existing mortgage and change its terms, an amending agreement may be used. An amending agreement that increases the principal is levied only on the increase.

If the lender instead replaces the old mortgage, the old mortgage is discharged and the new lender is added to title. A new mortgage is executed in the prescribed form, or to the like effect, by the mortgagor in order to be registered. A lender may also use a standard form mortgage, and a mortgage registered on those terms must state that it consists of them, set out the principal sum, and be dated and executed by the mortgagor.

Documents are submitted to a Land Titles office on the prescribed form, by mail or drop-off, with fees required at the time of submission. The mortgage levy on registration is $50 plus $5 for each $5000 or portion thereof of the principal secured. Once a document is registered, the submitter receives a registration notice.

Does the seller stay liable?

This is the question to settle before closing. A mortgage on title is discharged only when the Registrar enters a discharge, normally one in the prescribed form signed by the mortgagee. Once the discharge is entered, the land stops being liable for the principal sum or the part discharged. Whether the original borrower is personally released from the debt is a matter between that person and the lender, so look for a clear written release rather than assuming one.

Alberta also has a rule that, in a mortgage enforcement action, the lender's right is restricted to the mortgaged land, and a borrower cannot waive this protection. That rule does not apply to mortgages given by corporations, or to a high-ratio mortgage as defined in the regulations. Because of those exceptions, you should not count on it without legal advice about your situation.

What to do next

Frequently asked questions

Can a lender refuse to let me take over a mortgage?

It depends on the mortgage contract and the lender's approval process. Many lenders will assess the new borrower before agreeing. A lawyer can read your mortgage and explain what it allows.

Does the title change when I take over the mortgage?

A registered mortgage is only security, so the borrower stays the registered owner until a transfer is registered. Taking over payments alone does not change who is on title. The ownership and the mortgage each need to be dealt with properly.

Is there a cost to register a new or changed mortgage?

A mortgage levy is payable on registration, calculated as $50 plus $5 for each $5000 or portion thereof of the principal secured. If an amending agreement increases the principal, the levy applies only to the increase. Other fees depend on the documents involved.

Can the old mortgage simply be replaced instead?

Yes, that is a common alternative. The old mortgage is discharged and the new lender is added to title. Whether that suits you depends on the new lender's terms and any charges on the old mortgage.

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. Alberta 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 lawyer who practises in Alberta. Reach us at 1-844-900-1070 or send our Team a message.

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