Buying a Home as an Unmarried Couple in Arizona

Published by Best Law Firm · Sources checked September 11, 2026
Serving Scottsdale and families across Maricopa County, Arizona.

The important decisions happen before closing

Buying a home together can be exciting. It is also the right time to discuss questions that may feel less comfortable: What if one person contributes more? What if someone loses a job? What happens if the relationship ends?

For unmarried couples buying in Scottsdale or elsewhere in Arizona, the purchase contract, deed, loan documents, and any agreement between the partners each do a different job. Understanding those jobs before closing can prevent expensive misunderstandings later.

You do not need to assume the relationship will fail. You do need a plan that both people understand before committing savings and signing a long-term loan.

Keep ownership and loan responsibility separate

The deed identifies the owners and how they hold title. The promissory note identifies the borrower’s repayment obligation, and the deed of trust secures the loan against the property. Review the documents together. See A.R.S. § 33-801 for Arizona’s deed-of-trust definitions.

If you both borrow, a private agreement that one person will make the payment does not itself remove the other person’s responsibility to the lender. Moving out also does not release a borrower. The Consumer Financial Protection Bureau specifically discusses these issues for people buying with a partner.

Before closing, ask the lender and title professional to explain who will own the home, who must sign each document, and who will be personally obligated on the loan. A nonborrowing owner’s interest may still secure the loan. Have the actual documents reviewed rather than relying on the shorthand, “We are both on the mortgage.”

Choose the form of title deliberately

Arizona permits different forms of co-ownership. A.R.S. § 33-431 addresses tenancies in common and joint tenancy with right of survivorship.

The statute’s community-property-with-survivorship option is for spouses. An unmarried couple should not assume that buying together creates community property. Arizona’s marital-property rule appears in A.R.S. § 25-211.

Tell the attorney and title company whether you intend equal ownership or a different arrangement. The deed and your agreement should be coordinated. Do not choose a title form based only on what sounds familiar or what another couple used.

Decide what an unequal down payment means

Suppose one partner contributes $80,000 and the other contributes $20,000. That fact alone does not tell you what they intended to receive when the home is sold. They might intend equal ownership, proportional interests, repayment of initial contributions before sharing remaining proceeds, or another arrangement.

Discuss the calculation in actual numbers. If sale proceeds are lower than expected, does one person recover money first? If the home increases in value, how is the increase shared? What if there is not enough money after paying the loan and selling costs to reimburse both initial contributions?

Document whether money from a parent or other relative is a gift, a loan, or something else, and make sure the description is accurate and consistent with the lender’s requirements. Keep transfer records and the closing statement.

Arizona’s statute of frauds generally requires signed writings for agreements involving a sale of real property or an interest in it. Obtain advice on the required documents before relying on an oral promise about equity.

Agree on the monthly costs and major repairs

Separate the mortgage payment from taxes, insurance, homeowners association charges, utilities, maintenance, and improvements. Decide who pays each category and whether paying extra creates reimbursement or changes the intended financial arrangement.

• Routine bills: Identify payment dates and how each owner confirms the bill was paid.
• Repairs: Set an approval process for nonemergency expenses and a way to handle urgent work.
• Improvements: Decide whether an owner can approve a remodel alone and how contributions will be treated.
• Reserve funds: Consider a shared maintenance reserve and rules for using or returning it.
• Income changes: Explain what happens if one person temporarily pays more after the other loses income.

A new roof and a preference for different countertops present different decisions. Writing down the process can reduce arguments about whether an expense was necessary, authorized, or intended as a gift.

Build a buyout and sale process you can actually use

A promise that “whoever stays will refinance” leaves several questions unanswered. The person staying may not qualify. The interest rate or payment may be unaffordable. The owners may disagree about the home’s value.

A co-ownership agreement should address:

1. Notice. How does one owner request a buyout or sale?
2. Value. Will you use an appraisal, and how will you resolve a valuation disagreement?
3. Price. How will you account for debt, agreed reimbursements, and sale-related costs?
4. Financing. How much time does the buyer have to obtain funding and an appropriate release of the departing borrower?
5. Fallback. When must the property be listed if the buyout does not close?
6. Interim expenses. Who lives in the home, makes payments, and maintains it during the process?

Removing a name from the deed does not remove that person from the loan. Ask about a refinance, an assumption with a lender-approved release if available, or a sale that pays off the debt. Coordinate documents and closing steps so an owner does not casually surrender the property interest while remaining responsible for the loan. CFPB guidance on title and debt explains the distinction.

If you separate without an agreement

An unmarried breakup does not automatically produce a divorce-style division of the house. Title, enforceable agreements, and the evidence of the parties’ arrangements may matter. The Arizona Supreme Court’s Cook v. Cook decision recognizes that unmarried partners can have enforceable property-sharing agreements.

A co-owner may also be able to seek partition in superior court under A.R.S. § 12-1211. Partition is a civil process for resolving co-ownership; it can lead to a sale when property cannot be fairly divided. A.R.S. § 12-1218 addresses that situation. The proper claims and accounting depend on the facts.

Keep the deed, purchase documents, payment history, communications about ownership, and improvement records. Do not change locks, transfer title, or stop payments as a negotiation tactic without obtaining advice about the consequences.

Review the plan for death, incapacity, and future marriage

Your choice of title is also part of estate planning. Consider what should happen if one owner dies while the relationship is intact or during a separation. Review wills, beneficiary designations, and appropriate decision-making documents with estate counsel.

If you later marry, revisit the home’s ownership, payment arrangements, and any cohabitation agreement. Marriage introduces additional property questions; it should not be treated as a substitute for reviewing the documents.

Best Law Firm can discuss the family-law questions connected with your plans and clarify the scope of assistance available. A Scottsdale home purchase or co-owner dispute may also require real-estate or civil counsel, a title professional, your lender, and tax or estate-planning advice.

Common questions

This page provides general information, not legal advice for a specific matter. Reading it or contacting Best Law Firm does not establish an attorney-client relationship. Speak with licensed counsel about your circumstances before signing an agreement or acting on legal information.