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№ 77 Family Law

Can I Be Common-Law With Someone Still Married in BC?

Learn how British Columbia's Family Law Act treats a partner whose relationship partner is still legally married, and how that affects support and property.

Family Law5 min readTSLBy the Treadstone Law Team · British ColumbiaUpdated November 6, 2026
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Key takeaways
  • The Family Law Act defines a spouse by marriage or by at least 2 continuous years in a marriage-like relationship.
  • Being legally married to someone else does not on its face stop a person from qualifying as a spouse, though the point is an inference worth confirming with a lawyer.
  • If two people qualify as a deceased's spouse, they divide the spousal share as they agree, or the court decides.

You may be living with someone who is separated but not yet divorced. Then a practical question comes up: does BC law see you as a spouse, and what does that mean for the person still legally married to them?

The short answer is that the Family Law Act looks at how people live, not only at paperwork. This article explains the main rules, where they overlap, and where the answer depends on facts a lawyer should review.

This article covers the law of British Columbia.

How BC defines a spouse

Under the Family Law Act, a person is a spouse if they are married, or if they have lived with another person in a marriage-like relationship for a continuous period of at least 2 years. The Act also says a spouse includes a former spouse.

The Act does not list a fixed set of proof factors for a marriage-like relationship, so courts look at the evidence case by case.

Does an existing marriage get in the way?

The test looks to living in a marriage-like relationship rather than to being free to marry. That wording suggests a person can be a spouse under the Family Law Act even while still legally married to someone else, and the 2-year period must be continuous. This is a reading of the wording rather than a quoted rule, so a lawyer should confirm how courts have applied it to your situation.

The result can be that more than one person has a claim: the legal spouse and a new partner. Which claims succeed depends on dates, how each relationship ended or continued, and the evidence.

What it can mean for support, property and estates

If a spouse is entitled to spousal support, the other spouse has a duty to provide it, and the amount and duration depend on each spouse's conditions, means, needs and other circumstances, including how long they lived together.

If a person dies without a will leaving a spouse but no descendants, the whole intestate estate goes to the spouse. If there are descendants, the spouse's share depends on whether all of them are also the spouse's descendants.

When the relationship began matters

A relationship begins on the earlier of the date the spouses began living together in a marriage-like relationship and the date of their marriage. Once the 2-year threshold is met, it is counted from the start of cohabitation.

Family property is generally property owned by at least one spouse, or in which one has a beneficial interest, on the date of separation. Property acquired before the relationship began is excluded, but the increase in its value since the relationship began is shared.

Separation, sharing and agreements

Spouses may be separated while still living in the same residence, and the court may treat one spouse communicating an intention to separate permanently, or an action showing that intention, as evidence of separation. Spouses are not treated as having separated if, within one year after separating, they resume living together primarily to reconcile and live together for periods totalling at least 90 days.

What to do next

Frequently asked questions

Do I need to wait for a divorce to be a spouse in BC?

The Family Law Act defines a spouse by marriage or by 2 continuous years in a marriage-like relationship. The wording looks to how you live rather than whether you are free to marry, but this reading should be confirmed with a lawyer.

Can I claim property if we lived together less than 2 years?

Property division applies to couples who lived together in a marriage-like relationship for at least two years. A child together can make you a spouse for support, but not for property or pension division.

Can both the legal spouse and I inherit if there is no will?

If two or more people qualify as the deceased's spouse, they divide the spousal share as they agree, and the court decides if they cannot agree.

Do unmarried spouses need a divorce?

No. Unmarried spouses resolve property, support and parenting under the Family Law Act, while the Divorce Act applies to married spouses.

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. British Columbia 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 British Columbia. Reach us at 1-844-900-1070 or send our Team a message.

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