Key takeaways
- A cohabitation agreement records arrangements that unmarried people make about living together and their finances.
- Sharing costs, owning property and settling an ending are separate questions.
- An agreement between partners does not automatically change a deed, lease or creditor's rights.
- Enforceability varies by state and facts; each person can seek independent local legal advice.
Understand what an agreement for unmarried people living together may cover, its limits, and questions to take to a local attorney.
A cohabitation agreement is an agreement between people who live together, or plan to, about matters such as property, expenses, debts and what should happen if they separate. For unmarried partners, it can make financial expectations clearer before a disagreement. What it can accomplish and whether a court will enforce it depend on the terms, the facts and the law where you live.
This is general US information, not legal advice, and it has not been reviewed by a family-law attorney. Before signing or changing ownership, each person can seek advice from their own attorney licensed in the relevant state. The right documents and requirements vary.
What can a cohabitation agreement cover?
Depending on your situation and local law, you may want to discuss property each person already owns, items bought together, shared expenses and debts, and arrangements if you stop living together. The Northwest Justice Project's Washington guide discusses these topics for that state, including contributions to a home. Its Washington instructions are not a nationwide rule.
Start with the decision you are actually making. A couple sharing rent may have different questions from two people buying a home, or from one person moving into a home the other already owns. A discussion can be useful even if you later decide, with legal advice, that a particular agreement is not right for you.
Separate costs, ownership and an ending
“We will split the house costs” can leave several different questions unanswered. Use this comparison to prepare for advice, not as a legal formula:
| Question | What to discuss | What it does not settle by itself |
|---|---|---|
| Living costs now | Rent or mortgage payments, utilities, repairs, and how amounts may change | Whether a payment creates an ownership interest |
| Ownership | Whose names are on a deed or account, contributions, and what each person intends | Whether an informal promise changes title or binds a lender |
| If living together ends | A proposed way to handle belongings, shared purchases, moving costs or a possible buyout | Whether every term is enforceable or a landlord or lender must accept it |
Hypothetical example: One partner owns a home before the other moves in. The incoming partner pays a monthly amount and also helps pay for a roof repair. They may intend those payments as housing costs, as a contribution toward an ownership interest, or as something else. The payment alone does not tell a reader which result applies. Before spending money or signing, they can ask separate local attorneys how to document their intentions, what the deed and loan say, and what steps their state requires.
The opposite intention is possible too: both people may want the owner to keep sole ownership while sharing day-to-day expenses. They should still clarify what happens if a large repair is paid for or the arrangement ends. Neither example determines anyone's legal rights. Minnesota legal-aid guidance discusses contributions and property disputes in Minnesota; its 2021 guidance is not a substitute for current advice in another state.
What an agreement does not automatically change
A document between partners is not automatically a new deed, a change to a lease, a release from a mortgage or a will. Ask a lawyer which separate documents and approvals are needed for your plans. If you rent, check the lease and ask the landlord about any proposed change. If there is a loan, ask the lender or servicer what would be required to change or release a borrower's obligation.
For a joint credit card, the Consumer Financial Protection Bureau explains that either joint account holder can be responsible for the full balance. An agreement about who should pay between the two of you does not itself release either account holder from the creditor. Ask the card issuer about the available options before relying on a private arrangement.
An agreement also should not be treated as a complete estate plan. If either person wants the other to inherit, make medical decisions or have access to an account, ask an estate-planning attorney how a will, beneficiary designation, power of attorney or other document works with your plan. Rules and documents depend on the state and asset.
Is a cohabitation agreement legally binding?
It can be enforceable, but signing a document does not guarantee every provision will be upheld. Rules differ by state, and wording, circumstances and the evidence can matter. A local lawyer can explain requirements for writing, signatures, disclosure, real property and any relevant limits. Do not assume a notary stamp alone makes every term valid.
For example, the California Supreme Court's Marvin v. Marvin decision addressed contracts between unmarried partners and recognized possible claims in some circumstances. That is a California decision about particular legal questions, not a promise of an outcome elsewhere or in your case. An attorney can explain the current law and facts that apply to you.
If you later marry or enter a legally recognized partnership, ask counsel how that change affects your documents. A cohabitation agreement is not automatically the same thing as a prenuptial agreement, and an article about who gets the house in a divorce addresses a different legal situation.
Questions to take to a local attorney
Gather the documents you can lawfully access: a lease or deed, loan information, statements about major contributions, and any existing agreements. Then consider asking:
- What can an agreement cover in our state, and what formalities apply?
- How do the deed, lease and loan affect the arrangement we are considering?
- How should we distinguish ordinary living expenses from contributions we intend to treat differently?
- What happens if one person cannot pay, wants to move, or wants to buy the other's interest?
- What should be reviewed separately for debts, insurance, beneficiaries and estate planning?
- How can we make a valid change later, and when should each person get independent advice?
You do not have to arrive with identical proposals. Compare what each person wants and what each can afford, then get advice before relying on a form. The cohabitation agreement preparation checklist can help organize these questions. An editable example draft can help you prepare for a legal consultation, but it is not attorney-reviewed or tailored to any state. Our guide to things to know about your partner offers broader conversation prompts; it cannot resolve a property or legal question.
Children's support, custody and parenting arrangements can involve separate legal rules and court oversight. Do not assume a private agreement can permanently decide them; ask a family-law attorney about your circumstances.
What if discussing an agreement feels unsafe?
Both people need space to ask questions and seek advice without pressure. If there are threats, financial control, fear of retaliation or monitoring, a joint negotiation may not be safe. The National Domestic Violence Hotline offers safety-planning information; use a safer device if possible and seek local support. If you are in immediate danger, contact emergency services when safe to do so. A relationship check-in may help with ordinary shared decisions, but it is not a substitute for individual safety planning or legal advice.
Frequently asked questions
What is a cohabitation agreement?
It is an agreement between people living together, or planning to, that can record arrangements about property, expenses, debts and what happens if they separate. Its contents and legal effect depend on the agreement and applicable law.
Is a cohabitation agreement legally binding?
It may be enforceable, but that is not automatic. State law, the terms, how the agreement was made and the facts matter. A local attorney can explain the requirements and any limits that apply.
Do we need one if only one partner owns the home?
You may still want to discuss expenses, contributions and expectations, but whether an agreement is useful and how it affects any interest in the home depend on your circumstances and state law. Consult a local attorney before relying on a proposed arrangement.
Does a cohabitation agreement replace a will?
Do not assume it does. An agreement and an estate plan serve different purposes, and other documents or beneficiary designations may matter. Ask an estate-planning attorney how to coordinate them under your state's law.
Can we use a cohabitation agreement template?
A template can help identify questions, but it may not fit your state, property, obligations or goals. Have a local attorney explain the applicable requirements and review any document before you rely on or sign it.
Written by Caleb Merridan for reflection and relationship education. Editorial policy · Report a correction
