Who Keeps the House When Common-Law Partners Separate in Ontario?

One of the most urgent questions after a common-law separation in Ontario is also one of the most misunderstood: who gets to stay in the house? Many people assume the rules work the same as for married couples. They don't. If you're navigating a common-law separation house Ontario situation, knowing the difference could save you from a costly mistake — or from leaving a home you had every right to stay in.

The short version: for common-law partners, title governs. The name on the deed largely controls who can stay and who has to go. There is no automatic right to possession just because you lived there together for years or raised children under that roof.

This article walks you through the key rules, two common scenarios, and the options available to you — including a path to protect yourself before any of this ever becomes an issue.

Married vs. Common-Law: Why the Distinction Matters

Under Ontario's Family Law Act, married spouses have special rights to the "matrimonial home." Both spouses have an equal right to possession of that home regardless of who holds title — and neither can sell or mortgage it without the other's consent. These protections exist specifically for married couples.

Common-law partners are not covered by the matrimonial home provisions. Ontario law does not grant common-law partners any automatic right to stay in a shared home or any automatic share in its value at separation. This is true even after decades together.

That gap is significant. It means the legal analysis for a common-law couple starts — and sometimes ends — with one question: whose name is on title?

Two Scenarios: How Title Changes Everything

Scenario A: The Home Is in One Partner's Name Alone

Suppose Maya and David have lived together for six years in a home registered solely in David's name. When they separate, David has the legal right to ask Maya to leave. He is the owner. Maya has no automatic possessory right under Ontario law.

This can feel deeply unfair — and sometimes it is. Maya may have contributed to the mortgage, renovations, or household expenses for years. But the absence of her name on title means she cannot simply assert a right to stay. If she refuses to leave and David pursues the matter, a court is likely to recognize his right to possession as the registered owner.

Maya's remedy, if she has one, lies elsewhere — typically in an unjust enrichment claim (more on that below). But that claim takes time to litigate, and it does not automatically give her the right to remain in the home while it unfolds.

The practical reality: if you are not on title and your relationship ends, you may need to move out while legal proceedings are underway. Getting legal advice quickly is essential.

Scenario B: Both Partners Are on Title

Now picture the same couple, but this time both Maya and David are registered owners — perhaps they bought the home together, or David added Maya to title after she contributed to the down payment.

Here, both partners have an equal legal right to occupy the property. Neither can unilaterally force the other out. This creates its own tension: two people who no longer want to share a roof are legally entitled to stay.

The path forward in a joint-title situation usually involves one of three options:

1. Negotiate a buyout. One partner agrees to purchase the other's share. This requires agreeing on the home's value, arranging financing, and transferring title. A real estate lawyer handles the conveyance.
2. Sell and divide the proceeds. Both partners list the home, split the net sale proceeds according to their ownership shares (often 50/50, but not always — the title document or a separate agreement may specify different proportions), and each moves on.
3. Litigate a partition order. If the partners cannot agree, either one can apply to court for an order to sell the property. Ontario's Partition Act gives courts broad power to compel a sale when co-owners are deadlocked. This is a last resort — it is slower and more expensive than a negotiated sale.

When Children Are in the Picture

The presence of children complicates the possession analysis, even for common-law couples. If you are the primary caregiver of the children and the children's best interests are at stake, a court can make a temporary order granting you exclusive possession of the home — even if you are not on title.

This is not an automatic right. You would need to bring a court application and demonstrate that allowing the other parent to remain (or requiring the children to relocate) would be harmful or destabilizing. Courts treat these applications seriously, but success is not guaranteed and the order is typically temporary pending a broader resolution.

If you are in this position, do not assume you have to leave just because your name is not on the deed. Get legal advice before making any move.

Unjust Enrichment: When You Contributed to a Partner's Home

What if you spent years paying the mortgage, renovating the kitchen, or otherwise building value in a home registered only in your partner's name? Ontario law may offer a remedy through the doctrine of unjust enrichment.

To succeed on an unjust enrichment claim, you generally need to show three things: your partner was enriched (gained something of value), you suffered a corresponding deprivation, and there is no legal reason — such as a contract or gift — that justifies the enrichment. If the court agrees, it can award a monetary payment or, in some cases, impose a constructive trust that gives you a recognized interest in the property itself.

These claims are not simple. They require evidence — financial records, receipts, communications — and they can be time-consuming and costly to pursue. But they exist precisely because the law recognizes that a strict title-only approach can produce profoundly unfair outcomes after long relationships. As of writing, verify current rules with a lawyer, as the case law in this area continues to evolve.

The Smartest Move: A Cohabitation Agreement

All of the uncertainty above can be resolved in advance with a cohabitation agreement — a contract between common-law partners that sets out what happens to the home (and other property) if the relationship ends. You can specify who keeps the home, how a buyout is valued, what contribution each partner is recognized as having made, and how disputes are resolved.

A cohabitation agreement drafted before or early in the relationship is far cheaper than litigation after it ends. It also protects both partners — not just the one on title.

Frequently asked questions