California formally does not recognize common law marriages.
Here’s a question I get more often than you might think: “We were together for years, we built a life, we shared everything, bought a house, but we never actually got married. Does California have Common Law Marriage? Do I have any rights?” It is a big question, and the answer is more nuanced than most people expect. So let’s talk about it. Fair warning: this is a very general answer, not legal advice for your specific situation.
First, a Quick History Lesson: Who Was Marvin?
When lawyers in California talk about a “Marvin action,” we’re referring to a famous court case, Marvin v. Marvin. It involved Lee Marvin, a well-known, Oscar-winning actor. He was in a long-term relationship with Michelle Triola, who was an entertainer in her own right. The two lived together for years without ever getting married, and along the way she said she gave up her own career to support him, keep their home, and build a life together.
When the relationship ended, she argued that they’d had an understanding, essentially a promise, that they would share what they built together. The problem was they were never married, so the usual rules for dividing property between spouses did not apply.
What the Case Actually Decided
The California Supreme Court said something important: just because a couple is not married does not mean one partner is automatically left with nothing. Unmarried partners can enforce agreements between them, whether those agreements were written, spoken out loud, or even implied by how the couple actually lived and behaved. In other words, the court looked at the reality of the relationship, not just whether there was a marriage certificate.
There was one important limit. The agreement cannot be based on the idea that one partner is being paid for a romantic or sexual relationship. It has to rest on the kinds of things any two people might legitimately agree to, like pooling income, sharing property, or one person supporting the other’s career.
So What Is a “Marvin Action” Today?
A Marvin action is basically the legal claim one unmarried partner can bring against the other when the relationship ends, asking a court to enforce that kind of agreement to share property or provide support. Think of it as the unmarried couple’s version of sorting out “who gets what,” except instead of relying on marriage laws, it relies on contract principles and other areas of law such as an action in partition and an action to quiet title.
These claims can be based on:
An express agreement, meaning something you actually spoke about or put in writing.
An implied agreement, meaning a shared understanding the court can infer from how you lived, what you promised, and what each of you contributed.
Why This Matters (Especially in California)
California does not recognize common law marriage. That surprises a lot of people. No matter how many years you live together, you do not automatically become married in the eyes of the law, and you do not automatically get the property protections that married spouses have. A Marvin action is often the only path an unmarried partner has to make a claim, and it lives or dies on what the two of you agreed to and can prove.
The Practical Takeaway
If you are in a long-term relationship and do not plan to marry, do not assume the law will sort things out fairly on its own. It usually will not. The cleanest protection is to talk openly with your partner and, ideally, put your understanding in writing, whether through a cohabitation agreement or something similar, well before there is ever a dispute. The old saying that the best defense is a good offense applies here too. If you come up with a plan when you love each other, that plan will help both of you if you ever come to hate each other (hopefully never).
One Last, Important Thing: this post is a very general overview of a complicated area of law. Whether you have a Marvin claim, or whether you want to protect yourself from one, depends entirely on your specific facts. If any of this sounds like your situation, talk to a qualified attorney before you act.
If you have questions about cohabitation, Marvin actions, or protecting yourself and the life you’ve built with someone, I’m always happy to talk it through.
Attorney advertising. This post is provided for general informational purposes only, is not legal advice, and does not create an attorney-client relationship. Every situation is different; please consult a qualified attorney about your specific circumstances.
