Having your name on the deed does not automatically mean you own half the house. Whether you own half, more, or less depends on how the deed is written, the form of co-ownership it creates, and, in some situations, whether you’re married. Two names on the same deed can mean a clean 50/50 split or something closer to 90/10, and the answer isn’t always visible on the face of the document.
What Actually Determines Your Share
Start with the deed itself. If it states percentages, those percentages control. A deed reading “60% to A and 40% to B as tenants in common” means what it says, regardless of who wrote the checks at closing.
When the deed is silent on percentages, the type of co-ownership fills the gap. Joint tenants are equal by definition. Tenants in common without stated percentages are generally presumed equal, though that presumption can sometimes be rebutted with evidence of a different agreement between the owners.
Here is where people get tripped up: paying more toward the down payment, mortgage, or renovations does not automatically increase your ownership percentage. The deed controls, not the checkbook. If you contributed 80% of the purchase price but the deed lists you and another person as 50/50 joint tenants, your legal ownership is 50%. Changing that requires a new deed or a court order. Any side agreement about a different split should be in writing, ideally reviewed by an attorney before closing, rather than argued about years later.
The Three Forms of Co-Ownership
When two or more people appear on a deed, the deed should specify which form of co-ownership applies. That designation matters far more than the simple fact your name is listed.
Joint Tenancy
Joint tenancy requires what property law calls the “four unities”: each owner must acquire their interest at the same time, through the same document, with equal shares, and with equal rights to use the whole property. Because equal interest is built into the definition, two joint tenants each own exactly 50%. Three joint tenants each own a third. You cannot hold unequal shares and still have a valid joint tenancy.1Legal Information Institute. Joint Tenancy
The other defining feature is the right of survivorship. When one joint tenant dies, their share passes automatically to the surviving owner or owners, skipping probate entirely. A deceased joint tenant’s will has no effect on the property, even if it says otherwise. That automatic transfer is a major reason people choose joint tenancy in the first place.
Tenancy in Common
Tenancy in common is more flexible. Co-owners can hold unequal shares, and those shares can be bought, sold, or transferred independently. One person might own 70% and another 30%, and both still have the right to use the entire property.2Legal Information Institute. Tenancy in Common
There is no right of survivorship. When a tenant in common dies, their share goes into their estate and passes through their will or, if there’s no will, through state intestacy laws. The surviving co-owners don’t automatically get anything. They continue to co-own the property alongside whoever inherits the deceased person’s share.2Legal Information Institute. Tenancy in Common
A creditor who wins a judgment against one tenant in common can place a lien on that person’s individual share, which can eventually lead to a forced sale of the property.
Tenancy by the Entirety
Tenancy by the entirety is reserved for married couples and is recognized in roughly half the states. It works like joint tenancy in that both spouses hold equal interests and the surviving spouse automatically inherits the whole property. It adds a layer of protection: neither spouse can sell, mortgage, or transfer the property without the other’s consent.3Legal Information Institute. Tenancy by the Entirety
The biggest practical advantage is creditor protection. If only one spouse owes a debt, a creditor generally cannot force a lien on property held as tenancy by the entirety. Both spouses would need to be liable for a creditor to reach the property.
Marriage Can Give a Spouse a Claim Even Without Their Name on the Deed
Marriage complicates the “whose name is on the deed” question in ways that catch people off guard. Depending on where you live, a spouse who isn’t named on the deed may still have a legal ownership claim.
Community Property States
Nine states follow community property rules: Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin. In these states, most property acquired during the marriage is presumed to belong equally to both spouses, regardless of whose name appears on the deed. A house bought with income earned during the marriage is typically community property even if only one spouse signed.
Property owned before the marriage, or received as a gift or inheritance during the marriage, generally remains separate. The lines can blur. Using marital funds to pay the mortgage on a separately owned home, for example, can create a community property interest in what started as one spouse’s separate asset.
Equitable Distribution States
The remaining states follow equitable distribution rules during divorce. “Equitable” does not mean equal. It means a court divides marital property in a way it considers fair, weighing factors like each spouse’s income, the length of the marriage, and contributions to the household. A judge can award an interest to a spouse whose name never appeared on the deed if the home was purchased during the marriage with marital funds. The name on the deed matters far less in a divorce court than most people assume.
The Deed and the Mortgage Are Not the Same Document
People conflate these two constantly, and the confusion creates real problems. The deed establishes who owns the property. The mortgage establishes who owes money on it. They are separate legal instruments, and the names on each don’t have to match.
You can be on the deed without being on the mortgage. In that situation you own a share of the property but have no personal obligation to repay the loan. The lender can still foreclose if the borrower defaults, because the mortgage attaches to the property itself, but the lender cannot pursue you personally for any remaining balance.
The reverse is also possible: you can be on the mortgage without being on the deed, meaning you’re legally responsible for monthly payments on a property you don’t own. This happens more often than you’d think, usually when one partner has better credit and co-signs the loan while the other takes title. It’s a risky arrangement for the person paying a debt on property they have no claim to.
How to Check What You Actually Own
If you’re not sure how your property is titled, pull a copy of the deed from your county recorder’s office. Most counties now offer online searches through their recorder or register of deeds website. Look for specific language: “joint tenants with right of survivorship,” “tenants in common,” or “tenants by the entirety.” If the deed lists two names without specifying, the default varies by state. Many states default to tenancy in common; some presume joint tenancy for married couples.
Pay attention to the type of deed as well. A warranty deed means the person who transferred the property to you guaranteed they had clear title and the right to transfer it. A quitclaim deed makes no such promises and only transfers whatever interest the grantor may have had, which could be nothing. Quitclaim deeds are common between family members and divorcing spouses, but they offer no protection if there’s a title problem in the background. If you received your interest through a quitclaim deed and aren’t sure what you actually own, a title search is worth the cost.
Once you have the deed in front of you, the answer to whether you own half comes down to three questions in order: Does the deed state a percentage? If not, what form of co-ownership does it create? And are you married in a state where the law gives your spouse a claim regardless of the deed? Work through those three and you’ll know where you actually stand.