A Marvin claim in California is a civil lawsuit an unmarried person files against a former live-in partner to enforce a shared agreement about money or property. It exists because California’s community property rules do not apply to couples who never married or registered as domestic partners, so when the relationship ends there is no automatic right to anything titled in the other person’s name. The 1976 California Supreme Court decision in Marvin v. Marvin gave unmarried partners a way to enforce express and implied contracts about property and support, along with equitable remedies when fairness demands them.1Justia. Marvin v. Marvin Deadlines are short and evidence is everything, so the sooner you understand the rules, the better your position.
What Kind of Agreement You Need
Every Marvin claim rests on a contract of some kind. California recognizes three forms, and the form you have shapes both what you have to prove and how long you have to file.
- A written agreement, such as a signed cohabitation contract covering income, property, or expenses. Easiest to prove, longest deadline.
- An oral agreement: a spoken promise between the partners about their financial arrangement. Enforceable, but harder to prove and on a shorter clock.
- An implied agreement, where no words were exchanged but the couple’s conduct over time shows a shared economic arrangement, for example one partner paying all housing costs while the other ran the household full-time.
Whichever form applies, both partners must have contributed something of value. That contribution can be financial support, homemaking, labor on shared property, or work in a partner’s business. The one hard limit is that a contract built entirely on sexual services is unenforceable. If a contract mixes lawful and unlawful consideration, California courts can sever the unlawful portion and enforce the rest.1Justia. Marvin v. Marvin
Living together, by itself, is not enough. The claimant has to show that both partners intended to share property, pool resources, or support each other financially. Without that showing, the court treats each partner as a separate economic actor.
How Long You Have to File
This is where most Marvin claims are lost. The clock starts when the agreement is breached, which usually means the date the relationship ends or the date the other partner refuses to honor the deal.
- Written agreement: four years from the breach.2California Legislative Information. California Code of Civil Procedure 337
- Oral agreement: two years from the breach.3California Legislative Information. California Code of Civil Procedure 339
- Implied agreement: two years from the breach, because the contract is not founded on a written instrument.3California Legislative Information. California Code of Civil Procedure 339
Most Marvin claims involve oral or implied agreements, which means most claimants have just two years. People who wait until they feel emotionally ready to deal with the breakup often find the deadline has already passed. If you think you may have a claim, pin down the date of separation and treat it as a hard deadline.
What a Court Can Award
Property Division
The court can distribute assets accumulated during the relationship, including real estate held in only one partner’s name, bank and investment accounts, vehicles, and business interests. The division follows the terms of the agreement, or, for an implied agreement, the pattern the couple’s conduct establishes.
Rehabilitative Support
Similar in function to spousal support, rehabilitative support provides temporary payments to help the lower-earning partner become self-sufficient. Courts typically structure it as fixed-term payments rather than open-ended support, with the amount and duration turning on the circumstances and length of the relationship.
Quantum Meruit and Trusts
When no clean contract exists but one partner clearly benefited at the other’s expense, equitable remedies come into play. Quantum meruit lets the court award the reasonable market value of services one partner provided during the relationship, such as running a household, raising children, or working in the other partner’s business without pay.1Justia. Marvin v. Marvin The court can also impose a constructive trust on property where one partner holds title but the other has a legitimate equitable claim to it, or a resulting trust where one partner’s contributions helped acquire the property.4Supreme Court of California. Marvin v. Marvin
Evidence to Gather Now
The claimant carries the burden of proving a contract existed, so the case turns on documentation. The strongest cases combine three kinds of proof.
Financial records. Joint bank statements, shared credit card histories, mortgage and rent records, and property titles all help show the couple operated as a single economic unit. Tax returns claiming the other partner as a dependent, and records of one partner paying the other’s expenses, are especially useful. Organize these chronologically so a court can see the financial relationship develop.
Communications. Texts, emails, and letters where the partners discussed money, property, or promises of support are often the best evidence of an oral agreement. A single message where your partner acknowledges an agreement to share what you built can outweigh a stack of bank statements.
Witness testimony. Friends, family, and business associates who observed daily life and heard the couple discuss their finances can testify to an oral or implied contract. Witnesses matter most for implied agreements, where the whole case rests on demonstrating a pattern of shared economic behavior.
How the Case Moves Through Court
A Marvin claim is filed as a civil complaint in California Superior Court, not in family court. The procedural rules, discovery timelines, and trial format follow civil litigation. The complaint is typically filed in the county where the couple lived together or where the disputed property sits, and California charges a filing fee for unlimited civil cases, with slightly higher fees in Riverside, San Bernardino, and San Francisco counties.5California Courts. Statewide Civil Fee Schedule Effective January 1, 2026
Once filed, the complaint and summons must be served on the former partner, who then has 30 days to respond. Missing that window can produce a default judgment, meaning the court decides without the defendant’s input.6California Courts | Self Help Guide. Summons (form SUM-100) and Complaint Discovery follows, with document demands, depositions, and written questions. In asset-heavy cases it commonly runs six months to a year. Because these are civil actions, either side can ask for a jury trial on factual disputes about whether an agreement existed and what its terms were. Legal fees commonly run from around $15,000 into six figures depending on the complexity of the assets, and the whole process often takes two to three years from filing to resolution.
Registered Domestic Partners Do Not Need a Marvin Claim
California offers a formal domestic partnership registration through the Secretary of State, and registered partners have the same rights as married spouses, including community property protections and the right to seek support in family court.7California Legislative Information. California Family Code FAM 297.5 If you registered, your dissolution runs through family court, not a civil Marvin action.8California Secretary of State. Frequently Asked Questions Marvin claims are for couples who neither married nor registered. The doctrine applies equally to opposite-sex and same-sex partners.
If Your Former Partner Has Died
A Marvin claim is a contract claim, and contract claims can be pursued against a deceased person’s estate through probate. The deadlines are short. Under California’s Probate Code, a creditor must file a claim before the later of four months after letters are issued to the estate’s personal representative, or 60 days after receiving notice of the estate administration.9California Legislative Information. California Probate Code PROB 9100 If the executor rejects the claim, you have a limited window to challenge the rejection in court. An unmarried partner who believes they have a contractual claim should consult an attorney immediately on learning of the death rather than waiting.
The Cohabitation Agreement That Prevents All of This
The best Marvin claim is the one you never have to bring. A written cohabitation agreement can spell out how property acquired during the relationship will be divided, whether one partner receives support if things end, and how shared debts are handled. California courts enforce these agreements as written when they meet basic contract requirements.1Justia. Marvin v. Marvin A valid agreement needs offer, acceptance, and consideration from both sides, with the same limitation that applies to Marvin claims: sexual services cannot be the sole consideration. Each partner should ideally have independent counsel review it, and updating it as circumstances change heads off later disputes. A written agreement also extends your filing window from two years to four if the relationship eventually breaks down.