If you are married, the name on title matters far less than most people expect. Both spouses have an equal right to live in the matrimonial home until it is sold, or until an agreement or court order says otherwise — even if only one of you owns it. Neither of you can sell it or mortgage it without the other’s consent. And when the finances are settled, the home is the one asset you cannot shelter: its full value at separation goes into the calculation, even if you owned it before the wedding or inherited it. Common-law partners are in a completely different position.
What counts as a matrimonial home
Under Ontario’s Family Law Act, a matrimonial home is a property the spouses ordinarily occupied as their family residence at the time they separated.
Two things surprise people about that definition. First, it is about occupation, not ownership. A house in one spouse’s name alone is still a matrimonial home. Second, you can have more than one. A cottage the family used every summer can qualify alongside the house you live in year-round, and it then carries the same protections.
Both of you can stay, whoever’s name is on it
Married spouses have an equal right to possession of the matrimonial home. That right does not depend on who bought it, who pays the mortgage, or whose name is on title.
This is why one spouse cannot simply change the locks. It is also why “it’s my house, I want you out” is not something either of you can act on unilaterally, however strongly it is felt.
Neither of you can sell it alone
A spouse who owns the matrimonial home outright still cannot sell it, mortgage it, or place a line of credit against it without the other spouse’s written consent — or a court order.
This catches people mid-separation who assume that because the property is in their name, they can list it. They cannot, and a lawyer acting on the sale will discover the problem quickly.
The rule that catches almost everyone
When married spouses separate in Ontario, they do not physically split each asset. Each of you calculates the value of everything you own, subtracts your debts, and subtracts what you brought into the marriage. Whoever ends up with the larger figure pays the other half the difference. That payment is called an equalization payment.
Here is the part that catches people. You are normally allowed to deduct the value of property you owned on your wedding day. The matrimonial home is excluded from that deduction.
So if you owned the house before you married, and it was still the family home when you separated, you do not get credit for what it was worth on the wedding day. Its full value at separation goes into the pot.
The practical effect can be large. Someone who brought a fully paid-off house into a short marriage can find that a substantial share of its value is now shared. This is not a loophole or an argument — it is how the statute is written.
Inheritances lose their protection too
Money you inherit during a marriage is normally yours and stays out of the calculation.
That protection is lost if the inheritance goes into the matrimonial home. Use an inheritance to pay down the mortgage on the family home, or to buy it outright, and the exclusion generally disappears.
It is one of the most common and most expensive surprises in Ontario family law, and it is entirely avoidable with advice beforehand.
Can you make your spouse leave?
Only by agreement, or by a court order for exclusive possession.
A court can grant one spouse the exclusive right to occupy the matrimonial home. In deciding, a court looks at things like the best interests of any children, the financial position of each spouse, any existing orders, and whether there has been violence.
What you cannot do is force the issue yourself. Changing the locks, removing belongings, or cutting off utilities tends to damage your position rather than improve it.
If there is violence or you feel unsafe, that is not a property question and it should not wait for one. Call the police, and get legal advice immediately.
Does moving out cost you the house?
No. Leaving does not surrender your ownership interest, your share of the value, or your right to return.
It can affect other things — a parenting arrangement that becomes the established routine, or an argument about who pays what while you live apart. So it is a decision worth taking advice on rather than making in the middle of a bad week. But the fear that walking out the door forfeits the house is not correct.
Common-law partners: different rules entirely
Almost none of the above applies to unmarried couples.
Common-law partners in Ontario have no automatic right to possession of the home, no automatic share in its value, and no equalization. If the house is in your partner’s name, it is their house.
A common-law partner who contributed — money toward the down payment or mortgage, or years of work renovating it — may still have a claim, but it is a different kind of claim and it has to be proved rather than assumed. It is harder, slower and less certain than the married route.
This is the single biggest gap between what people believe and what the law says, and it is the reason cohabitation agreements exist.
What usually happens in practice
Most separating couples do not litigate the house. They do one of three things: sell it and divide the proceeds, agree that one spouse buys out the other’s share and refinances alone, or agree that one stays for a defined period — often until the children finish school — and it is sold afterwards.
Which of those is realistic usually comes down to whether one of you can carry the mortgage on one income. That question is worth answering early, because it shapes everything else in the negotiation.
When you need a lawyer
If you both agree on what should happen to the house, you still need the agreement properly drafted. A separation agreement that deals with property has formal requirements, and one that is signed without financial disclosure or independent legal advice can be set aside years later — usually at the worst possible moment.
Get advice before you do any of the following: move out, sign anything your spouse has drafted, agree to a buy-out figure, or list the property.
If you are separating and want to know where you stand on the home, our family law team can talk it through. Everything you tell us is confidential.