The percent ownership interest on a homestead exemption application is the share of the property you legally own under the deed, written as a percentage. If you’re the only name on the title, it’s 100%. If you co-own with someone else, it’s your portion of the title, not your share of the mortgage payments or the down payment. The number comes straight off the recorded deed, and it matters because in many states it can cap the exemption you receive when a co-owner doesn’t live in the home.
Reading the Number Off Your Deed
How the property is titled decides what you write in the box.
- Sole ownership. One name on the deed. The answer is 100%.
- Joint tenancy with right of survivorship. Two or more owners each hold an equal, undivided share. Two joint tenants each own 50%; three each own roughly 33%. When one owner dies, the survivors absorb that share automatically.1Legal Information Institute. Joint Tenancy
- Tenancy in common. Co-owners can hold unequal shares. One person might own 70% and another 30%, and each owner’s share passes to their heirs at death. If the deed names tenants in common without assigning specific percentages, the general legal presumption is that shares are equal. Three names, no percentages, means one-third each.2Legal Information Institute. Tenancy in Common
- Community property. In the nine community property states, each spouse automatically owns a 50% interest in property acquired during the marriage with community funds, regardless of which spouse earned the money or signed the paperwork. Separate property that a spouse brought into the marriage stays with the original owner.3Internal Revenue Service. IRM 25.18.1 Basic Principles of Community Property Law
The confusion most people run into is between joint tenancy and tenancy in common. Joint tenants always hold equal shares. Tenants in common can hold whatever split the deed spells out.
Finding Your Deed
Your recorded deed is the definitive source. It states the type of tenancy and, for tenants in common, the percentages. If you don’t have a copy at home, the county recorder’s office has one on file, and many counties now offer online search tools. Prenuptial agreements can also matter if you’re trying to figure out whether a home in a community property state is community or separate.
Why the Percentage Changes What You Receive
In many states, when a property has co-owners and not all of them live there, the exemption is limited to the qualifying owner’s proportional share. If your state offers up to $50,000 in homestead exemption value and you own 50% of the home as a tenant in common, you may be able to exempt only $25,000 of assessed value rather than the full $50,000.
The rules differ by ownership type. For joint tenants with right of survivorship, some states let the resident co-owner claim the full exemption even if the other joint tenant lives somewhere else. For tenants in common, the more common approach caps each owner’s exemption at their proportional interest. Own 40% as a tenant in common, live in the home, co-owner lives elsewhere? Your exemption caps at 40% of the maximum.
When every co-owner lives on the property and each qualifies, the full exemption typically applies. The proportional limit bites hardest when co-owners are in different living situations, like siblings who inherited a home together and only one moved in.
Married Couples and Divorce
Married couples who both live in the home generally qualify for the full exemption regardless of how the title is split between them. Joint tenants, tenants in common, community property — if both spouses reside on the property, the full exemption typically applies to the home.
Divorce shifts the picture. If one spouse is awarded the home and the other comes off the deed, the remaining spouse’s ownership jumps to 100%, and the exemption filing should be updated to reflect that. If the settlement leaves both names on the deed but only one spouse actually lives there, the resident spouse can face the same proportional limitation that applies to any other co-ownership where a co-owner has moved out. Updating your filing after a divorce is easy to forget and expensive to neglect.
Property Held in a Trust
Moving your home into a trust complicates the ownership question because the trust, not you, holds title. Many states allow homestead exemptions for property in revocable living trusts, since the grantor keeps control and can take the property back. The specific rules vary significantly by state, and some require particular language in the trust document to preserve the exemption.
Irrevocable trusts are harder. Because the grantor gives up control, many states treat the transfer as ending the grantor’s ownership interest entirely, which can eliminate the exemption. Some states allow an exception if the trust reserves the grantor’s right to live on the property, but that takes careful drafting. Before you move a home into any trust, check with the county assessor’s office to confirm you won’t lose the exemption.
What Happens if You Get the Percentage Wrong
Overstating ownership on a homestead application carries real financial consequences. States treat improper claims seriously because the exemption reduces your tax bill and effectively shifts that burden onto other property owners. Penalties commonly include repayment of all taxes you should have paid (often several years back), interest on those unpaid taxes, and an additional penalty calculated as a percentage of the shortfall.
Honest mistakes are treated differently. Assessors generally allow corrections without penalty if you catch the error and report it promptly. The trouble comes when someone claims 100% on a property they co-own with a non-resident, or claims the exemption on a home that isn’t actually their primary residence. If your ownership changes because of a sale of partial interest, an inheritance, a divorce, or any other title change, update the filing right away rather than waiting for the assessor to catch it.
Ownership Isn’t the Only Requirement
Percent ownership alone doesn’t qualify you. You also have to actually live in the home as your primary residence.4Legal Information Institute. Homestead Exemption The exemption doesn’t apply to a rental, a vacation home, or an investment property, even if you own 100% of it. Most states define primary residence as the place where you live for the majority of the year and intend to remain. You can claim the exemption on only one home at a time, and states cross-reference filings; claiming in two states at once is one of the fastest ways to trigger an audit and the penalties above.
So the number you write in the ownership field is a plain fact from your deed. What makes it consequential is everything downstream: whether other names are on the title, whether those people live in the home, and whether the situation has changed since the last time you filed.