Short answer first. Yes, one person can usually keep the house. In Canada there is a specific program, often called the spousal buyout, that lets you refinance up to 95% of the home's value to buy out your former partner, which is well past the usual 80% refinance ceiling. It has strict conditions and it needs a signed separation agreement. This is a walkthrough of how the mortgage side actually works, written plainly, because the legal and emotional parts of a separation are hard enough without the financing being a mystery too.
First, the thing nobody tells you
A separation agreement decides who gets the house. It does not remove anybody from the mortgage. Those are two different systems. Your lawyer can write that you keep the home and your ex has no further claim, and your lender will still hold both of you responsible for every payment until the mortgage is formally discharged or refinanced into one name. I have seen people find this out two years later when they were declined for a car loan because a mortgage they thought they had walked away from was still sitting on their credit.
So the sequence matters. The agreement comes first, because the lender needs to read it. Then the mortgage gets restructured. Until that second step happens, nothing has really changed in the eyes of a lender.
A separation agreement decides who gets the house. Only a refinance or a discharge decides who owes the mortgage.
The spousal buyout program, in plain terms
Normally when you refinance in Canada you can borrow up to 80% of your home's value. The spousal buyout is the exception. Under this program you can go up to 95% of the value, with default insurance, specifically to pay out a former spouse or common-law partner. That extra room is often the whole reason keeping the house is possible.
Here is the shape of it with illustrative numbers. Say the home is worth $700,000 and the existing mortgage is $380,000. The equity is $320,000, and the agreement says your ex is owed half of that, so $160,000. You need a new mortgage of $380,000 plus $160,000, which is $540,000. That is about 77% of the value, so in this example you would not even need the special program. But if the mortgage had been $480,000 to start, the new one would be $560,000, or 80%, and you would be right at the edge. Above that line, the buyout program is what keeps the deal alive.
What lenders need to see
A signed, finalized separation agreement. Not a draft, not an intention. Lenders read the specific clauses about the property, the buyout amount, and support.
The buyout amount clearly stated. The funds have to go to your former partner, not into your pocket. This is not a cash-out refinance dressed up in a separation.
Income that supports the whole payment alone. This is the real hurdle. A mortgage two incomes carried comfortably now has to work on one.
A current appraisal. The buyout math depends on the value, so lenders order their own opinion rather than taking yours.
Support payments documented. If you receive spousal or child support, lenders can often count it as income, but they want the agreement and usually proof of consistent receipt.
Qualifying on one income
This is where most separations get difficult, and it has nothing to do with fairness. The stress test does not care that you paid this exact mortgage for eight years. It asks whether your income alone supports the new, larger mortgage at a qualifying rate higher than the one you will actually pay. Plenty of people who have never missed a payment do not qualify on paper for the mortgage they are already carrying.
If that is you, options exist. Support income can help if it is documented and expected to continue. Extending the amortization lowers the payment and the qualifying hurdle. Some lenders treat support and variable income more generously than others, which is exactly the sort of difference a broker exists to find. And if prime lending genuinely does not work this year, an alternative lender can be a bridge for a term or two while things stabilize, provided there is a written plan to get back to prime.
Support payments: income or debt?
Both, depending on which side you are on. If you receive support, most lenders will count it as income when you can show the agreement and a history of actually receiving it, often three to six months of deposits. Some lenders want to see it continuing for a minimum number of years past the mortgage start. If you pay support, it comes off your income or gets treated as a monthly liability, which reduces what you qualify for. Neither is a surprise to a lender. What is a surprise, and what causes declines, is finding out about support obligations halfway through underwriting because they were not disclosed up front.
If you are the one leaving
Get your name off the mortgage in writing, and confirm it. Ask for the discharge confirmation or the new mortgage registration showing only your ex on title and on the loan. Until that exists, that mortgage is on your credit report and counts against you when you go to buy your own place. I have had clients delayed a full year because this step never got finished.
On the upside, if you are buying again and the property you left was the family home, you may be treated as a first-time buyer again for some programs depending on the timing and the rules of the specific program. That is worth checking rather than assuming.
A realistic timeline
| Stage | What happens | Rough timing |
|---|---|---|
| Agreement | Lawyers finalize the separation agreement, including the property and buyout terms | Varies widely, weeks to many months |
| Application | Full mortgage application with the agreement, income documents, and support records | A few days once documents are gathered |
| Appraisal | Lender orders an independent appraisal of the home | About a week |
| Approval and legal | Lender issues approval, lawyer handles the title change and payout | Two to four weeks |
The part you control is the document gathering. The part you do not control is the legal agreement. Start the mortgage conversation before the agreement is final so you know what you can qualify for while the terms are still being negotiated. Knowing your number changes what you agree to.
What I would tell a friend
Do not decide to keep the house because it feels like losing if you do not. Run the actual monthly number on one income, including property tax, insurance, and the maintenance that used to be two people's job. Sometimes keeping it is right, especially with kids in a school and a market you cannot re-enter. Sometimes selling and each buying something manageable is the move that lets both people breathe. My job is to tell you honestly which one the numbers support, not to talk you into the bigger mortgage.
Frequently asked questions
Can I take my ex off the mortgage without refinancing?
Almost never. Some lenders will consider a formal assumption where one borrower is released, but it is uncommon and still requires you to qualify alone. In practice, a refinance into your name is the normal path.
Do I need a signed separation agreement before I apply?
You can start the conversation and get a realistic picture before it is signed, which I recommend. But the lender cannot issue a final approval on a spousal buyout without the finalized agreement, because the buyout terms come from it.
Does the 95% buyout program cost more?
It requires default insurance because you are above 80% of the value, and that premium is a real cost added to the mortgage. Rates themselves are not automatically higher. Whether it is worth it depends on the alternative, which is often selling.
Can I use the buyout to pay off joint debts too?
Sometimes. Some lenders allow joint debts specified in the separation agreement to be paid out within the same refinance. It has to be in the agreement, not just a good idea you had later.
What if my ex will not cooperate with the appraisal or paperwork?
This is a legal problem before it is a mortgage problem, and your lawyer is the right person for it. On the mortgage side, everything waits until the legal side resolves.
Separation is one of the few times a mortgage conversation is genuinely emotional, and I try to treat it that way. If you are working through this, a quiet call to understand your options costs nothing and often removes the worst of the uncertainty. You may also want to read about refinancing and equity options more generally.
