Community property in real estate is a rule used in nine states that treats most real estate bought during a marriage as owned equally by both spouses, fifty-fifty, no matter whose name is on the deed or who earned the money that paid for it. Those states are Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin.1Internal Revenue Service. Publication 555, Community Property If your home sits in one of them, that equal-ownership default shapes how you can sell it, borrow against it, divide it in a divorce, and pass it on when a spouse dies.
One rule up front: the state that controls is the state where the real estate physically sits, not where you married or where you live now. A couple who married in New York and later bought a rental in Nevada owns a community property asset in Nevada, even if everything else they own follows common-law rules.
What Makes a Home Community Property
The test is the source of the purchase money. If you bought real estate during the marriage with income earned during the marriage, it is community property. Wages, salaries, business profits, and investment returns earned while married are all community funds, and real estate bought with those funds belongs equally to both spouses.
Every community property state applies a strong presumption that anything acquired during the marriage is community property. Overcoming that presumption takes clear and convincing evidence that the property should be classified differently. A deed in one spouse’s name alone does not override the presumption if marital income paid for the home. Courts look at where the money came from, not whose name is on the title.
The split is automatic and equal. It does not matter that one spouse earned all the income and the other stayed home. Each spouse owns exactly half.
Overriding the Default with a Prenup or Postnup
Community property is a default, not a mandate. A prenuptial agreement signed before the wedding, or a postnuptial agreement signed after, can designate future purchases as separate property, make the funding source control the classification, or carve out specific assets. The agreement has to be in writing and signed by both spouses. Informal understandings carry no legal weight.
Real Estate That Stays Separate
Not everything a married person owns is community property. Three categories of real estate stay with the individual spouse:
- Property one spouse owned before the marriage, even if the other spouse later moves in.
- Real estate given to one spouse by a third party, even if the gift arrives during the marriage.
- Real estate one spouse inherits.
Separate property can lose that protected status through a process called transmutation. Adding your spouse to the deed is the clearest example, but paying the mortgage or funding major renovations with marital money can also create a community interest in what started as separate property. Most community property states require a written, signed agreement to formally transmute real estate; an oral promise is not enough, but conduct and commingling can still erode the separate character of the asset.
Keeping separate property separate takes discipline. Hold inherited or pre-marriage real estate in your name alone, pay for it from a bank account funded only with separate money, and avoid mixing in marital funds. If you inherit a rental and deposit the rent into a joint checking account that also holds marital wages, tracing which dollars belong to whom later becomes expensive and uncertain.
When Separate and Community Funds Are Mixed
Real purchases rarely fit cleanly into one bucket. A common pattern: one spouse puts inheritance money toward the down payment, and the couple’s joint income pays the monthly mortgage. The result is a single property with both separate and community interests built in.
Courts handle this through apportionment, assigning a percentage of the equity to each interest based on the dollar amounts contributed from each source. The calculation accounts for the down payment, each principal payment, and how the home’s value changed over time. The methodology varies by state, but the direction is the same everywhere: whoever can document what they contributed, and from which source, protects their share. If you are buying with a mix of separate and community money, start the paper trail at closing.
Both Spouses Must Sign to Sell or Mortgage
This is where community property rules show up fastest in daily life. In community property states, neither spouse can unilaterally sell, transfer, or mortgage community real estate. Both signatures are required on the deed, the mortgage, and any lease longer than one year. A transaction completed without both signatures can be voided.
Title companies and lenders in these states know the rule and will usually refuse to close without both spouses at the table. The problem cases tend to involve separated couples who are not yet divorced. Until a court formally divides the property in a divorce decree, both signatures are still needed, even if the spouses are living apart.
How Community Real Estate Is Divided in Divorce
Divorce is where community property classification matters most for many people. The starting point is an equal division: each spouse is entitled to 50% of the equity in community real estate. That is different from equitable distribution states, where a judge weighs factors like earning capacity and length of marriage to reach a “fair” split. Community property states begin, and usually end, at fifty-fifty.
Dividing a house in half rarely means literally splitting it. Couples and courts generally take one of three routes:
- One spouse buys the other out at current fair market value and keeps the home.
- The property is sold and the net proceeds are divided equally.
- The spouses continue to co-own, usually only for rental or investment properties where both agree to keep a business arrangement going.
When equity is thin, or when neither spouse can carry the mortgage alone, a sale is often the only workable option. If the couple cannot agree, a court can order the sale and split the proceeds after the mortgage and closing costs are paid.
What Happens When a Spouse Dies
When one spouse dies, what happens next depends on how title is held. The smoothest option is community property with right of survivorship, a title designation available in several community property states. With that language on the deed, the deceased spouse’s half transfers automatically to the surviving spouse by operation of law, with no probate.2Arizona Legislature. Arizona Revised Statutes 33-431 – Grants and Devises to Two or More Persons The surviving spouse records an affidavit of death and a certified death certificate with the county, and holds clear title afterward.
Joint tenancy with right of survivorship also avoids probate, but it does not carry the same tax benefit, and it has a structural risk community property with right of survivorship avoids: in joint tenancy, one owner can break the tenancy by transferring their interest to a third party without the other’s consent.
The Stepped-Up Basis Tax Advantage
The biggest financial advantage of community property shows up in federal tax law. When one spouse dies, the surviving spouse’s half of community property, not just the deceased spouse’s half, gets a new tax basis equal to the home’s fair market value on the date of death.3Office of the Law Revision Counsel. 26 U.S. Code 1014 – Basis of Property Acquired From a Decedent That is the full double step-up, and it is unique to community property.
The dollars make the point. Say a couple bought a home for $200,000 and it is worth $800,000 when one spouse dies. In a common-law state holding title as joint tenants, only the deceased spouse’s half steps up. The survivor’s basis becomes $500,000, so selling for $800,000 produces $300,000 in taxable gain. In a community property state, both halves step up to a combined $800,000 basis, and selling for $800,000 produces zero taxable gain.
For the full step-up to apply, at least half of the community property interest has to be includable in the deceased spouse’s gross estate for federal estate tax purposes.1Internal Revenue Service. Publication 555, Community Property For virtually every married couple with community real estate, that requirement is met.
The Home Sale Exclusion After a Spouse Dies
The stepped-up basis works alongside the federal home sale exclusion. A married couple filing jointly can exclude up to $500,000 of gain on the sale of a principal residence. After one spouse dies, the survivor normally drops to the $250,000 individual exclusion. A special rule lets the surviving spouse use the full $500,000 exclusion if the home is sold within two years of the death and the couple met the ownership and use requirements immediately before the death.4Office of the Law Revision Counsel. 26 USC 121 – Exclusion of Gain From Sale of Principal Residence Combined with the full step-up, a surviving spouse in a community property state can often sell the family home soon after the death and owe nothing in capital gains tax, even on a home that appreciated for decades.
Creditors and Community Real Estate
Equal ownership has a downside that catches couples off guard: one spouse’s debts can reach the family home. A creditor who obtains a judgment against one spouse may be able to attach a lien to community real estate, even if the other spouse had nothing to do with the debt.
How far that exposure goes depends on the state. Some community property states let a creditor reach the entire property for one spouse’s community debts. Others limit collection on one spouse’s separate debts to that spouse’s half. A few distinguish between debts incurred for the community’s benefit and purely individual obligations. The IRS follows a similar pattern: a federal tax lien always attaches to the liable spouse’s half, and in some states, state law lets the IRS reach the non-liable spouse’s half as well. If your spouse carries significant individual debts or tax liabilities, work out how your state’s rules interact with creditor rights before buying real estate together.
Income from Separate Real Estate
Community property states disagree on one important point: what happens to income generated by separate property. If you inherited a rental and it produces monthly rent, is that rent yours alone or does it belong to the community?
Arizona, California, Nevada, New Mexico, and Washington treat income from separate property as separate income. Idaho, Louisiana, Texas, and Wisconsin treat it as community income.1Internal Revenue Service. Publication 555, Community Property The classification matters when you reinvest. In a state where the rent stays separate, you can put it into another property without creating a community interest. In a state where the rent is community income, spending it on a new property can pull that new property into the community pot.
Moving Between Community Property and Common-Law States
Relocating between the two systems creates classification problems. The baseline rule is that real estate is governed by the law of the state where it physically sits. A Nevada home follows Nevada rules even after the owners move to New York.
The harder question is quasi-community property. When a couple moves from a common-law state into a community property state, real estate they bought back in the common-law state was not community property when they bought it. But if the couple later divorces or one spouse dies in the new state, some community property states will treat that older real estate as if it had been community property for purposes of dividing marital assets or settling the estate. The split is equal, just as with property that was community from the start.
Not every community property state recognizes quasi-community property, and the rules that do exist vary. For real estate still located in the old common-law state, the outcome often depends on whether that state applies its own law or defers to the law of the owner’s current home. These cross-border situations are among the most litigated corners of community property law. If you are moving between the two systems and own real estate on either side, talk to an attorney before assuming your classifications carry over.