Cohabitation Agreement Lawyer in Phoenix, AZ

A cohabitation agreement lawyer in Phoenix drafts a written Arizona contract for unmarried partners who live together, setting who owns what, who pays for what, and how property is divided if you split up. Arizona courts can enforce unwritten and implied deals between partners, so a signed agreement replaces guesswork with clear terms.

Maybe you're buying a home in the Valley together, moving into your partner's place, or relocating from a state where you might already count as married. Francisca F. Manchac has helped couples for more than 18 years. She drafts each agreement under Arizona contract law for a flat fee set before work begins. Call (832) 263-0935 to schedule a free consultation.

Francisca F. Manchac | Licensed in Arizona and Texas | Last Updated: October 2026

Cohabitation agreement lawyer Francisca F. Manchac reviewing a living-together agreement with a Phoenix couple by video

Key Takeaways

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Arizona courts can enforce oral and implied agreements between unmarried partners, so how you live together can create property claims a written agreement would settle.

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When unmarried partners buy Arizona real estate together, they hold it as tenants in common unless the deed expressly declares a joint tenancy with right of survivorship.

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A marriage can't be formed in Arizona without a license and a ceremony, no matter how long a couple lives together, but Arizona honors a common-law marriage validly formed in a state such as Texas.

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An unmarried partner isn't an heir under Arizona law and inherits nothing unless named in a will, trust, beneficiary deed, or beneficiary designation.

Who Needs a Cohabitation Agreement in Phoenix?

You need a cohabitation agreement if you live with a partner you're not married to, or plan to, and you share a home, bills, or big purchases.

That includes Phoenix couples buying a house together, partners moving into a home one of them owns, and couples with very different incomes, savings, or debts. It also fits partners who aren't ready to marry, or never plan to, and want clear rules either way. Each one is drafted under Arizona law as part of the firm's prenuptial, postnuptial, and cohabitation agreement services. Sharing a home with a friend instead of a partner? A roommate agreement is the better fit. The firm drafts, negotiates, and reviews agreements. It does not handle divorces, custody cases, or property lawsuits between former partners, and it refers that work to trusted litigation counsel.

Common Situations Handled

Most Phoenix couples call when they're about to combine something that's hard to split later.

Buying a Home Together

A deed shows who's on title, not who paid what. An agreement sets each partner's share, who pays the mortgage, and how a buyout works if you split.

Moving Into Your Partner's Home

When one partner owns the house, the other may pay toward the mortgage or repairs. An agreement says whether those payments buy any ownership or count as rent.

Moving to Arizona From Another State

Couples who lived in a common-law marriage state, such as Texas or Colorado, may already be married when they arrive. Francisca sorts out your status first, because a cohabitation agreement can't undo a marriage.

Different Incomes or Debts

One partner may earn more, own a business, or carry student loans. An agreement keeps each partner's debts their own and sets fair rules for shared savings.

Pets, Cars, and Shared Accounts

Who keeps the dog, the car, or the joint account is one of the most common fights after a breakup. Settling it now costs far less than arguing about it later.

Not Ready to Marry

Some couples want clear rules now and a prenup later. Others never plan to marry. Both benefit from a written agreement.

Why Hiring a Cohabitation Agreement Lawyer Matters

Arizona courts look at how you lived, not just what you signed, so a weak agreement can leave the real deal up for argument. The wording has to match your finances, your deed, and Arizona contract rules.

What Goes Wrong Alone

Templates often skip the house, ignore how the deed is titled, or tie the deal to the relationship itself, which Arizona courts won't enforce.

What Experience Adds

An attorney matches the agreement to how you actually hold title, share bills, and plan for a breakup or a death.

How Outcomes Differ

A clear agreement lets you divide things and move on. Without one, former partners can end up in court arguing about what they meant.

“

I needed to get a roommate and a friend recommended I have a free consultation with Francisca. So glad I did. She suggested a Co-Habitation Agreement. I never knew something like that existed!

Mark · Cohabitation agreement client

Who Is Involved?

A cohabitation agreement involves you, your partner, and two separate attorneys, each with a defined role. Here's who does what.

You

Share your goals and finances, and decide what you want the agreement to cover.

Your Partner

Shares their own finances and signs voluntarily after their own review.

Your Attorney

Francisca represents you, drafts the agreement, and negotiates changes.

Your Partner's Attorney

Reviews the draft for your partner and advises them independently.

Your Title Company or Lender

Records how you take title, which decides what happens to the home if one of you dies.

What Your Cohabitation Agreement Includes

Your engagement produces a signed Arizona cohabitation agreement that both partners understand. You also get peace of mind: you've settled the hard questions while you still agree on the answers.

What You Receive

  • Cohabitation Agreement: Sets who owns what, who pays what, and how you divide property if you split.
  • Property Schedules: List what each partner brings in and what you buy together.
  • Home and Title Terms: Set ownership shares and buyout rules, and match the agreement to how your deed is vested.
  • Estate Plan Coordination: Points to the will, beneficiary forms, and powers of attorney your partner needs to be included.

What You Avoid

  • Implied-Deal Disputes: A former partner claiming an unwritten deal based on how you lived.
  • Surprise Title Outcomes: Your share of the house passing to your family instead of your partner, or the reverse.
  • Fights Over Shared Property: Arguments over a house, a car, or a pet after a breakup.
  • A Partner Left Out: Your partner getting nothing because Arizona inheritance law doesn't include them.

Are Cohabitation Agreements Enforceable in Arizona?

Yes. Arizona courts enforce cohabitation agreements under ordinary contract law, as long as the relationship itself isn't what the partners are trading. These three rules shape every agreement for Phoenix couples.

Unwritten Deals Count: Arizona's Implied Agreements

The Arizona Supreme Court enforced agreements between unmarried partners in Cook v. Cook (1984) and Carroll v. Lee (1986). In Carroll, the court found an implied agreement to share property from how a couple lived and worked together for 14 years, and it counted homemaking as a real contribution. That cuts both ways: your conduct can create claims you never meant to make. A signed agreement states the deal so a court doesn't have to guess.

License and Ceremony: No Common-Law Marriage

Under A.R.S. 25-111, a marriage can't be formed in Arizona by agreement alone. It takes a license and a ceremony, no matter how long you live together. Under A.R.S. 25-112, Arizona does honor a marriage that was valid where it began, including a common-law marriage formed in a state such as Texas. Couples who moved here from one of those states may already be married under Arizona law.

Tenants in Common by Default: Arizona Deeds

Under A.R.S. 33-431, when two unmarried people take title to Arizona real estate, they hold it as tenants in common unless the deed expressly declares a joint tenancy with right of survivorship. As tenants in common, each partner's share passes through their own estate at death, not to the other partner. Your agreement and your deed's vesting language should say the same thing.

What Happens After You Call The Law Offices of Francisca Manchac, PLLC

Your cohabitation agreement moves through five steps, from a free video consultation to a signed agreement, with a flat fee set before work begins.

01

Free Consultation and Intake

Book a consultation and complete the intake form at least 24 hours ahead. Francisca learns how you live, what you share, and what you want protected.

02

Property and Finances

You and your partner list what each of you owns, owes, and plans to buy together. Francisca turns it into schedules and checks how any shared home is titled.

03

Drafting and Review

Francisca drafts the agreement and walks you through every clause in plain language by video. You can text the office with questions.

04

Partner's Attorney Review

Your partner's own attorney reviews the draft, and Francisca negotiates any changes with them.

05

Signing and Next Steps

You both sign, and Francisca points out any will, beneficiary form, power of attorney, or deed updates the agreement calls for.

Common Questions About Cohabitation Agreements in Phoenix

Something else on your mind? Call or text (832) 263-0935.

How much does a cohabitation agreement cost in Phoenix?

Francisca drafts cohabitation agreements for a flat fee, so you know the full cost before work begins and never pay by the hour for questions or revisions within the scope you agree on. The fee depends on what your agreement needs to cover, such as a home you're buying together, a house one partner already owns, a business, or large debts. Your partner pays their own attorney for an independent review. Many couples also add wills and powers of attorney, and Francisca quotes that work at the same time. Your first step is a free 30-minute virtual consultation, where Francisca reviews your situation and quotes your flat fee.

Can I make my own cohabitation agreement?

You can, and Arizona courts will enforce a homemade agreement if it meets basic contract rules. The risk is in what templates leave out. Most don't deal with how your home is titled, a house one partner already owns, or what happens if one of you dies. Some tie the deal to the romantic relationship itself, which Arizona courts won't enforce. Others use vague terms that invite the very argument you wanted to avoid. A flat-fee agreement drafted for your situation costs far less than a property lawsuit after a breakup. If you already signed a template, Francisca can review it and close the gaps.

What rights do unmarried couples have in Arizona?

Unmarried partners in Arizona have very few rights by default. Community property rules apply only to married couples, so each of you keeps what's in your own name. Neither partner can ask a court for spousal maintenance after a breakup, and neither inherits from the other without a will. An unmarried partner also has no automatic say in medical decisions, which is why a health care power of attorney matters. What you do have is contract law. Arizona courts enforce written, oral, and implied agreements between partners, and a cohabitation agreement puts your terms in writing so nobody has to prove them later.

Are you legally married after living together for 7 years in Arizona?

No. Arizona has no time limit that turns living together into a marriage, whether it's 7 years or 30. A marriage formed in Arizona needs a license and a ceremony. The seven-year idea is a myth, and no state uses it as a rule. The exception is couples who lived in a state that allows common-law marriage, such as Texas or Colorado, and met that state's rules there. Arizona treats them as married, and only a divorce ends that marriage. If you've lived in one of those states, Francisca reviews your history before drafting anything, because the right document may be a postnup instead.

Does a cohabitation agreement have to be in writing in Arizona?

No Arizona statute requires every cohabitation agreement to be written, and courts have enforced oral and implied ones. A written, signed agreement is still the only reliable choice. Arizona's statute of frauds, A.R.S. 44-101, requires a signed writing for some promises, including agreements about an interest in real property and agreements that can't be performed within a year. Proving an oral deal also means proving what each person said, often years later. Arizona sets a longer deadline to sue on most written contracts (six years) than on oral ones (three years). Putting it in writing removes the guesswork.

Does registering as domestic partners in Phoenix protect us?

Only in a narrow way. The City of Phoenix keeps a domestic partner registry for unmarried couples who live in the city and share a home. Its sole benefit is the right to visit your partner in a health care facility located in Phoenix. It doesn't create property rights, support rights, or inheritance rights, and Arizona has no statewide domestic partnership status. Registration is fine to do, but it isn't a substitute for a cohabitation agreement, a will, and a health care power of attorney. Those documents carry your wishes across Arizona and beyond the hospital doors.

What happens to our cohabitation agreement if we get married?

Marriage changes the rules. Once you marry, Arizona community property law applies, and a cohabitation agreement isn't built to replace a premarital agreement. If you plan to marry, sign a prenuptial agreement before the wedding that carries forward the terms you still want. If you're already married, a postnuptial agreement can do the same, though Arizona now holds postnups to a stricter standard than prenups. Finishing a prenup before the wedding is the simpler path. Francisca can draft your cohabitation agreement with a future prenup in mind, so moving from one to the other is easy.

Can a cohabitation agreement cover our house and our pets?

Yes. An Arizona cohabitation agreement can set each partner's ownership share of a home, who pays the mortgage, taxes, and repairs, and how a buyout works if you split. It can also cover a home one partner owned before you moved in, so the other partner's payments don't create confusion later. Pets, cars, furniture, and joint accounts can all be included. It can't decide custody or support for children you share. Arizona courts decide those based on the child's best interests, no matter what an agreement says.

Do we both need our own lawyers?

Arizona law doesn't require it, but the firm strongly recommends it. One attorney can't represent both partners, because their interests differ. When each partner has independent counsel, it's much harder for either one to claim later that they didn't understand the agreement or signed under pressure. Francisca represents one partner and works with the other partner's attorney to reach terms you both accept. If your partner's lawyer already sent a draft, Francisca can review it for you. Either way, you'll know exactly what you're signing.

Does a cohabitation agreement protect my partner if I die?

Only partly. An agreement can include promises about property, but Arizona inheritance law gives an unmarried partner nothing on its own. Your estate passes to your children, parents, or other relatives unless you plan otherwise. To leave your partner your share of a home or savings, you need a will or trust, an Arizona beneficiary deed for real estate, and updated beneficiary forms on retirement accounts and life insurance. A health care power of attorney lets your partner speak for you if you can't. Francisca can prepare these alongside your agreement so the whole plan works together.

Areas We Serve

The Law Offices of Francisca Manchac, PLLC serves unmarried couples across Maricopa and Pinal Counties, and throughout Arizona, with consultations and drafting reviews by video. Couples buying a home together should also check how the deed is vested when it's recorded with the county recorder, such as the Maricopa County Recorder's Office. Visit the Phoenix office page to see every service available to Arizona clients.

Maricopa County

Pinal County

All of Arizona

Phoenix skyline at sunset, served by The Law Offices of Francisca Manchac, PLLC

Get Started With a Cohabitation Agreement Lawyer in Phoenix

The best time to settle who owns what is before you combine it. Start with a free 30-minute virtual consultation with Francisca. Call (832) 263-0935 or book online.