Property Division in Common Law vs. Married Couple Cases

A lot of people assume property is divided the same way whenever a serious relationship ends. In Ontario, it is not. If the parties were married, property division usually starts with the equalization rules in the Family Law Act.

If they were not married, there is no automatic equalization regime. In most common-law cases, the starting point is ownership, title, any written agreement, and whether there is a basis for an equitable claim such as unjust enrichment. Ontario’s current public guidance still draws that distinction clearly.

If You Were Married, Property Usually Starts With Equalization

For married spouses, the usual property question is not, “Who gets which asset?” The usual question is whether one spouse owes the other an equalization payment. Ontario’s property regime for married spouses is based on net family property.

In general terms, each spouse calculates the increase in net worth during the marriage, and the spouse with the higher net family property may have to pay the other spouse one-half of the difference. That is why it is more accurate to talk about equalization than to say everything is simply split 50/50.

That point matters because people often describe married property cases too loosely. In many cases, each spouse keeps property in their own name, and the real issue is the equalization payment. Ontario law also keeps some property outside the equalization calculation, including certain gifts and inheritances received after marriage, but not a matrimonial home.

There is room for unequal equalization in unusual cases, but the test is high. The statute uses the word unconscionable, not merely unfair.

The Matrimonial Home Changes the Analysis

The matrimonial home is not just another asset. For married spouses, Ontario gives both spouses an equal right to possession of the matrimonial home, even if title is in only one name. One spouse cannot simply rely on ownership and remove the other from the home because their name is on title.

The matrimonial home also matters in the equalization calculation. Property received by gift or inheritance is normally excluded, but that exclusion does not protect a matrimonial home in the same way. That is one reason the home often becomes the centre of the dispute in married cases.

If You Were Not Married, Property Does Not Work the Same Way

This is where many people get the wrong answer before they ever speak to a lawyer. In Ontario, common-law partners do not have automatic equalization rights. Living together for years does not, by itself, create the same statutory property rights that marriage creates. That remains the position in Ontario as of April 2026.

The starting point is usually much simpler, and often much harsher. Each partner usually keeps the property they own. If something is in one person’s name, it will usually be treated as that person’s property unless there is some other legal basis to challenge that result. If property is jointly owned, then the joint ownership matters. Common-law partners also do not automatically share the increase in value of separately owned property just because they were together.

The same problem shows up with the home. A common-law partner does not automatically have the right to stay in the family home if the home is not in their name. If one common-law partner owns the home, they can generally sell or mortgage it without the other partner’s permission.

That is the real difference between the two regimes. In married cases, the law starts by recognizing a form of shared financial partnership through equalization. In common-law cases, the law usually starts with ownership.

A Common-Law Partner May Still Have a Property Claim

No automatic equalization does not mean no claim. A common-law partner may still claim a share of property through unjust enrichment. Ontario public legal education materials still describe this as the main route where one partner contributed financially or in some other way to the other partner’s property but does not have formal ownership.

These claims are not easy. The person making the claim has to prove more than the fact that the relationship was long or that it would feel unfair to walk away with nothing. Steps to Justice says this kind of claim can be very hard to prove. It says the claimant must show:

• they contributed to the property
• the other partner benefited from that contribution
• there is no reason for the other partner to keep that benefit without sharing it

Just as important, a successful claim does not automatically mean half of everything. The remedy may be money. In some cases, it may be an interest in property. It depends on the contributions, the evidence, and what the court considers appropriate. CLEO’s current guide says the size of the share may depend on how much was contributed or how much that contribution increased the value of the other partner’s property.

Support Rights Do Not Create Property Rights

This is another place where people mix up two different legal issues. A common-law partner may qualify for spousal support in Ontario. For support purposes, the Family Law Act includes people who are not married but who:

• have cohabited continuously for at least three years, or
• are in a relationship of some permanence and are the parents of a child

That still does not give a common-law partner an automatic right to equalize property. Support and property are separate issues. A person may have a support claim and still have no automatic claim to the other partner’s house, investments, or business.

Agreements Matter More Than Most People Think

A lot of these cases become harder because the parties relied on assumptions instead of documents. Ontario law allows parties to make marriage contracts and cohabitation agreements. CLEO’s current common-law property guide also points to cohabitation agreements as the way to set out how property and debts will be handled if the relationship ends.

That does not mean every agreement is drafted well or that every agreement will solve every dispute. It does mean the analysis changes quickly where there is a written contract, clear title documents, and evidence showing what the parties actually agreed to do with the property.

Waiting Usually Makes These Cases Harder

Property disputes rarely get easier with time. For married spouses, Ontario imposes time limits if a spouse needs the court to decide the amount of an equalization payment. Ontario’s public guidance says the basic deadlines are:

• six years from separation
• two years from divorce
• six months from the first spouse’s death

Common-law property claims may not turn on the same equalization deadlines, but they are usually even more dependent on records and proof. CLEO’s current guide makes the practical point that proof of ownership and contribution matters. What often matters early includes:

• receipts
• bank records
• title documents
• mortgage documents
• loan records
• evidence of direct or indirect contributions

The longer people wait, the more likely it is that documents disappear, positions harden, and the case turns into a credibility fight.

How Foote Law Can Help

Property cases usually go wrong at the beginning. Sometimes the problem is a bad assumption about common-law rights. Sometimes it is a rush to settle before the property picture is clear. Sometimes it is a home, business, or long period of cohabitation that makes the case less straightforward than it first appears.

Foote Law assists Ontario clients with:

• equalization analysis for married spouses
• matrimonial home disputes
• common-law property disputes
• unjust enrichment claims
• cohabitation and marriage agreements
• early case assessment where ownership and contribution issues are already in dispute

If you are separating and there is a dispute about the home, title, equalization, or common-law property rights, get advice before you agree to anything.

Book Consultation Now