Most people facing this are in the middle of something hard. A parent has died, the house is full of their things, and suddenly a brother or sister is a co-owner with an equal say. One sibling may live there, another may need the money, and someone may already have been named executor or successor trustee. They are trying to work out which choices are open and what each one involves, before anyone commits to a path.
This page walks through how co-ownership works, how the house reaches the siblings, the main options, and the property-tax and income-tax rules that travel with an inherited house.
What Co-Ownership of an Inherited House Means Under California Law
Tenancy in common is the form of co-ownership siblings most often end up with. Each sibling holds a separate, undivided fractional interest in the whole property. "Undivided" means no one owns a particular bedroom or half of the yard. A sibling with a one-third share owns one third of the entire house.
When two or more people inherit together and the will, trust or court order does not say otherwise, they generally take title as tenants in common. Each co-owner can generally sell, give away or borrow against their own share without the others' permission. A buyer or lender steps into that share only, subject to the other owners' rights. No one can sell or mortgage the whole house alone.
Joint tenancy works differently. The California Courts' inventory and property value guide describes joint tenancy as ownership in equal shares where, if one owner dies, the property passes to the other. That is the right of survivorship. Tenants in common have no such right: a deceased co-owner's share passes through their own estate.
Which form applies is set by the documents: the deed language, the trust terms or the court's order. The same guide notes that deeds are public records held by the County Recorder's Office in the county where the property sits, so a family can usually get a copy there.
How the House Gets to the Siblings: Probate, Trust, and Other Paths
The path the house takes decides who is in charge right now and when the siblings actually hold title. There are three broad routes.
A trust. If the parent held the house in a revocable living trust, the successor trustee (the person the trust names to take over after the person who created it dies) transfers title under the trust's terms, generally without a court case. The trust document controls who receives the house and in what shares.
Probate. If the house was in the parent's name alone, or held as a tenant in common, with no trust, probate in the Superior Court of California is typically needed before title moves to the heirs. An executor is the person named in a will to carry it out. An administrator is the person the court appoints when there is no will or no named executor can serve; both are commonly called the personal representative. Probate Code section 8461 sets the order of priority for appointment as administrator, starting with the surviving spouse or domestic partner, then children, grandchildren and other issue, then parents, and the list continues through more distant relatives, the public administrator, creditors and any other person. Until the court's order or a deed of distribution issues, the heirs have no authority over the house, and the personal representative manages it.
Simplified procedures. California has shorter procedures for smaller estates, named by what each covers: the affidavit for collection or transfer of personal property, the petition to determine succession to the decedent's primary residence, the affidavit for real property of small value, and the spousal or domestic partner property petition. Probate Code section 13100 allows the personal property affidavit only after 40 days have passed since the death and only when the estate's gross value in California is under a limit that is adjusted periodically. Under Probate Code section 13050, property held in joint tenancy or in a trust the parent could revoke is excluded when that value is measured. The California Courts self-help pages publish the current limits.
When one parent survived the other, the house may have passed to the surviving spouse first, for example through community property with right of survivorship or the spousal petition under Probate Code section 13650, and then to the children at the second death. The estate settlement guide sets out these paths in order.
The Four Main Options When Siblings Co-Own a House
Four realistic paths are open to siblings who share an inherited house.
- Sell together. All siblings agree to sell and divide the proceeds according to their ownership shares, after the mortgage and costs of sale are paid.
- Keep it together. All siblings agree to hold the house, whether as a rental, as a family place, or simply while they decide. Each then shares in its costs and its decisions.
- Buy out. One sibling buys the others' shares. That requires agreeing on a value, typically through an appraisal, and a deed transferring the selling siblings' interests.
- Partition. A court process available when co-owners cannot agree, described below.
The first three all depend on agreement. Partition is the legal remedy when agreement fails.
No option is right for every family. The answer turns on facts: each sibling's finances, whether anyone lives in the house, whether there is a mortgage and whether the payments can be covered, the house's condition, and what the family wants the house to be. Keeping it as a rental adds landlord duties; selling ends shared costs but also the family's connection to the place. The tradeoffs of keeping, renting and selling are set out side by side in keep, rent or sell.
Selling the Inherited House: What All Siblings Need to Know
Authority to sell depends on where the estate stands. During probate, the executor or administrator acts for the estate and signs on its behalf; the heirs do not sign the deed. Whether a particular sale also needs a court's approval depends on how the probate is being run, and the probate attorney for the estate can say which rules apply. During trust administration, the successor trustee acts under the trust's terms.
After title has passed to the siblings, every co-owner has to agree to sell the whole house. One sibling cannot force a sale of the entire property on their own, short of the partition process described below.
Income tax matters too. Under 26 U.S.C. § 1014(a), inherited property generally takes a new basis (the starting figure for measuring taxable gain) equal to its fair market value at the date of death. In plain terms, if the house sells for more than its date-of-death value, the gain is generally measured from that value, not from what the parent paid decades ago. If the value fell, the basis can step down as well. A CPA, an enrolled agent or a tax attorney reviews how this applies to a specific sale.
Siblings choose among kinds of sale. A cash sale to a buyer who needs no financing and takes the house as it is can mean fewer repairs, fewer showings and more certainty about timing, but the price may be lower than a listing on the open market might bring. A listing with an agent may reach more buyers but usually involves preparation and time. Neither is the answer by default. The steps of listing, pricing and closing are part of the selling process, not this decision.
Property Tax and the Parent-Child Exclusion Under Proposition 19
Property tax is often the cost that changes most after an inheritance. California generally reassesses real property to current market value when it changes ownership, and an inheritance is a change in ownership unless an exclusion applies. The State Board of Equalization's Proposition 19 Fact Sheet explains that, where the parent died, the date of death is treated as the date of transfer.
For transfers on or after February 16, 2021, the parent-child exclusion is Rev. & Tax. Code section 63.2. It excludes from reassessment "the purchase or transfer of real property that is the principal residence of an eligible transferor" between parents and children, with conditions in the statute. The home has to have been the parent's principal residence and has to become the child's principal residence within one year of the transfer. The child must also file for the homeowners' or disabled veterans' exemption within a year. A rental home or a vacation home does not qualify, as the Board's Proposition 19 page states, though a family farm can.
There is also a value limit. Under the statute, if the home's market value at transfer equals or exceeds its taxable value plus an adjusted $1,000,000, the excess is added to the taxable value. The Board's fact sheet gives the adjusted amount as $1,044,586 for transfers from February 16, 2025, through February 15, 2027.
When several siblings inherit, the exclusion is tied to a child who actually lives in the home. How the county assessor treats the shares of siblings who do not move in is a question for that assessor's office.
The claim, form BOE-19-P according to the fact sheet, is filed with the county assessor. Under Rev. & Tax. Code section 63.2, it is due within three years after the transfer, or before the house is transferred to a third party or the eligible child no longer lives there, whichever comes first. A claim filed within six months after the assessor mails a supplemental or escape assessment notice for the transfer also counts as timely. A later claim may still be considered if the house has not been sold to a third party, but the exclusion then begins with the year the claim is filed. The county assessor's office is the place for questions about a specific claim.
When Siblings Cannot Agree: Partition Under California Law
Partition is the court process that ends shared ownership when agreement is no longer possible. Under Cal. Code Civ. Proc. section 872.210, a partition action may be brought by an owner of an estate of inheritance in real property owned by several people at once, and by a co-owner of personal property. It does not depend on the other owners' consent. The statute bars this route only for spouses dividing their community or quasi-community property.
A court can resolve partition in two broad ways. Partition in kind divides the property physically among the owners, which a single-family house often does not allow. Partition by sale means the property is sold and the proceeds divided according to ownership shares, the more common result for a house.
California's Partition of Real Property Act applies, under Cal. Code Civ. Proc. section 874.311, to real property held in tenancy in common where no agreement in a record binding all the co-owners governs partition, in actions filed on or after January 1, 2023. One of its features is a chance to buy out. Under Cal. Code Civ. Proc. section 874.317, if a co-owner asks for a sale, the court first determines the value and then notifies the parties; within 45 days after that notice, any co-owner who did not ask for a sale may elect to buy the interests of those who did. The price for each interest is the court's value for the whole parcel multiplied by that co-owner's fractional share.
Partition is filed in California Superior Court, generally in the county where the property is located. It is litigation, handled by an attorney who litigates real property or probate cases; this page describes the concept, not how to bring or defend one.
When One Sibling Lives in the House
This is one of the most common arrangements, and often one of the most tender. A sibling may have cared for the parent there, or may simply have nowhere else to go.
A co-owner who lives in the house does not, as a general matter, owe rent to the other co-owners just by living there. The other co-owners, though, are not required to let the arrangement go on indefinitely. Whether money is owed in a particular situation can depend on what the siblings agreed and on how they have shared the house.
Costs are generally shared according to ownership shares: property taxes, the mortgage, insurance and necessary repairs. Who has paid what is worth tracking from the start, because it often comes up when the house is eventually sold or bought out.
The sibling who lives there may be the one positioned to claim the Proposition 19 exclusion, since it turns on principal residence, as described in the property tax section above. If that sibling wants to keep the house, buying out the others is one path, again starting with an agreed value. If the co-owners cannot agree on continued use, partition remains available.
Where the situation has become a real dispute, with accusations about money, damage or exclusion from the house, it is a contested matter handled by an attorney who litigates trust and probate cases.
Federal Income Tax and Basis: What Siblings Inherit Along With the House
The tax basis rule shapes what each sibling might owe when the house is eventually sold. 26 U.S.C. § 1014(a) provides that the basis of property acquired from a decedent is generally "the fair market value of the property at the date of the decedent's death," with listed alternatives, such as an estate-tax valuation election.
Each sibling's basis in their fractional share follows that date-of-death value, up or down, not the price the parent paid. If three siblings each own one third, each one's basis is generally one third of the house's date-of-death value.
Establishing that value matters for both income tax and property tax. The California Courts' inventory guide says a family's first list can use a best estimate of fair market value at the date of death and that a formal appraisal may be needed if the estate goes to court. In a probate case, a California probate referee generally appraises much of the estate's property; outside probate, families often use a qualified appraiser. If the siblings later sell for more than their basis, the gain may be subject to federal capital gains tax, and how it is taxed depends on each seller's circumstances.
Community property can work differently. Under 26 U.S.C. § 1014(b)(6), the surviving spouse's half of community property is also treated as acquired from the decedent when at least half of the community interest was included in the decedent's gross estate, so both halves may receive a new basis at the first spouse's death. This affects the basis the children later inherit. A CPA, an enrolled agent or a tax attorney reviews the calculation for a specific sale, and the county assessor's office handles property-tax questions.
