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California does not recognize common law marriage. No matter how long a couple lives together, shares finances, or raises children, cohabitation alone does not create a legal marriage under California law. That said, California courts do recognize contracts between unmarried partners, a concept known as palimony, and couples who live together without marrying can protect themselves with a written cohabitation agreement.
Does California Recognize Common Law Marriage?
No. California requires a marriage license and a ceremony for a marriage to be legally valid. Living together for any length of time, even decades, does not create a marital relationship or the automatic rights that come with one, such as community property division or spousal support.
This surprises many long-term couples who assume that years of shared life together carry the same legal weight as a marriage certificate. Under California law, it does not. Without a marriage license, a couple remains legally single, regardless of how their relationship functions day to day.
Will California Recognize a Common Law Marriage From Another State?
Yes, in a specific circumstance. California Family Code section 308 states that a marriage validly formed under the laws of another jurisdiction is valid in California, even if California itself would not have recognized that marriage if it had been formed here. A handful of states, including Texas, Colorado, and Iowa, still allow couples to form a common-law marriage.
If a couple validly established a common-law marriage while living in one of those states and later moved to California, California courts will generally treat that marriage as valid for purposes of divorce, support, and property division. The couple must be able to show that their common-law marriage met the requirements of the state in which it was formed.
What Is Palimony in California?
Palimony refers to financial support that one partner may owe the other after an unmarried relationship ends. Unlike spousal support in a divorce, palimony does not arise automatically. It depends entirely on proving that the couple had an agreement, whether written, oral, or implied through their conduct, to share income, property, or ongoing support.
How Did Marvin v. Marvin Establish Palimony Rights?
The California Supreme Court’s 1976 decision in Marvin v. Marvin involved actor Lee Marvin and his longtime partner, Michelle Triola. The couple lived together for years without marrying, and Triola claimed Marvin had agreed to support her financially in exchange for her giving up her own career to care for him.
The court ultimately ruled against Triola on the facts of her case because she could not prove that an enforceable agreement existed. But the decision itself changed California family law. The court held that unmarried partners can enforce contracts, whether express or implied, involving property and support, so long as the agreement does not rest on an exchange of sexual services as consideration.
This ruling opened the door for future palimony claims in California, even though it did not create automatic rights simply because two people lived together.
What Must Be Proven to Win a Palimony Claim?
A successful palimony claim generally requires evidence of the following:
- An actual agreement between the partners, whether written, spoken, or shown through their conduct over time.
- A clear understanding that one partner would provide financial support or share property with the other.
- Some form of reliance or contribution by the partner seeking support, such as giving up a career or contributing income toward shared property.
Courts look closely at how the couple actually behaved. Long cohabitation alone is not enough. A partner claiming palimony must point to specific facts showing that an agreement genuinely existed, not just an informal expectation that things would work out.
What Is a Cohabitation Agreement and Why Does It Matter?
A cohabitation agreement is a written contract between unmarried partners that spells out how property, debts, and financial support will be handled during the relationship and upon its end. It works similarly to a prenuptial agreement, except it applies to couples who plan to live together without marrying.
Because California does not automatically grant unmarried partners any property or support rights, a cohabitation agreement is often the only reliable way to protect both people. Without one, disputes over shared property or promised support can turn into prolonged litigation, with each partner relying on memory, text messages, or witnesses to prove what was agreed to.
What Should a Cohabitation Agreement Include?
A well-drafted cohabitation agreement typically addresses:
- How jointly acquired property, such as a home or vehicle, will be divided if the relationship ends.
- Whether either partner will provide financial support to the other, and for how long.
- How shared debts and household expenses will be handled during the relationship.
- What happens to jointly owned bank accounts, retirement contributions, or business interests.
- How disputes over the agreement itself will be resolved, such as through mediation.
Each partner should have their own attorney review the agreement before signing. Since a cohabitation agreement is a binding contract, both people benefit from independent legal advice to confirm the terms are fair and enforceable.
Is There an Exception When Someone Believed They Were Married?
California recognizes a narrow exception called the putative spouse doctrine. This applies when a person genuinely and reasonably believed they were legally married, even though the marriage was later found to be invalid, often due to a defect such as an undissolved prior marriage or a missing license.
A putative spouse can receive some of the same property and support rights as a legally married spouse, but only for the period during which the belief in the marriage was reasonable. This doctrine is distinct from common-law marriage, since it requires an actual, albeit flawed, attempt at a formal marriage rather than simply living together over time.
Does Registering as Domestic Partners Change Anything?
Unmarried couples in California also have the option to register as domestic partners with the California Secretary of State. Registered domestic partners receive many of the same rights and responsibilities as married spouses under California law, including community property treatment and the ability to file for dissolution through family court.
This is a meaningful alternative for couples who want the legal protections of marriage without a wedding ceremony. Registering as domestic partners is a formal legal step, however, and it carries real consequences if the relationship later ends. Couples considering this option should understand that it functions much like marriage for legal purposes, unlike simply living together informally.
What Happens Without a Cohabitation Agreement or Palimony Agreement?
Without a written agreement, an unmarried partner has limited options if the relationship ends. Property is generally awarded based on whose name appears on the title or account, regardless of how the couple actually shared expenses or contributions during the relationship.
A partner without a formal agreement can still attempt to bring a Marvin claim based on an oral or implied agreement, but these cases are harder to prove and often more contested. Courts require specific evidence of what the parties actually agreed to, and disputes over oral promises can lead to lengthy litigation with an uncertain outcome.
Speak With a Los Angeles Family Law Attorney
Unmarried couples in California do not receive the automatic legal protections that come with marriage, which makes a cohabitation agreement one of the more important documents a long-term couple can put in place. If you are considering a cohabitation agreement, or you believe you have a palimony claim after the end of a relationship, our Los Angeles family law attorneys can review your situation and outline your options.
Land Legal Group also handles prenuptial agreements and divorce matters throughout the Los Angeles area. Call (310) 552-3500 to schedule a consultation.
