Most people facing this situation did not choose it. A parent dies, and suddenly two or three siblings, or a surviving spouse and stepchildren, own one house together. Each of them has different finances, different memories of the place and different ideas about what happens next. Often one person is already living there, someone else wants the money, and everyone is trying to stay on speaking terms while grieving.
This page explains how co-ownership of an inherited California home works: how title is held, what each owner may do alone, how property tax and income tax apply, and the paths families usually weigh. It is written for heirs and beneficiaries trying to understand their position before anyone decides anything.
How Multiple Owners Come to Hold Inherited Property in California
Co-ownership after a death usually starts in one of two ways. Either the person died without a will, and the California Probate Code's rules of intestate succession decide which relatives inherit, or a will or trust leaves the house to more than one person. Either way, more than one name ends up on title.
A few terms help here. An heir is a relative who inherits under the law when there is no will that controls the property. A beneficiary is a person named in a will or trust to receive something. When there is no will, the court appoints an administrator to run the probate estate, and Probate Code section 8461 sets the order of priority for that role, starting with a surviving spouse or domestic partner, then children, then grandchildren, and continuing through more distant relatives, the public administrator, creditors and finally any other person. Where a trust holds the house, the successor trustee manages it, and Probate Code section 16061.7 requires the trustee to serve a notification on each beneficiary and, when the event is the settlor's death, each heir, generally within 60 days.
When the house is finally distributed, through probate, a trust distribution or a simplified court procedure, the co-owners each receive an undivided interest in the whole property. How title is worded, as tenants in common or as joint tenants, shapes what each owner can do. For the broader sequence of steps after a death, the California estate settlement guide walks through the order.
The single most useful document is the deed. It states how title is held, and the California Courts self-help guide notes that deeds are public records available at the County Recorder's Office in the county where the property is located (California Courts, Inventory and estimate property value).
Tenancy in common. Civil Code section 685 defines an interest in common as "one owned by several persons, not in joint ownership or partnership." In practice, each tenant in common holds a share that can be unequal (one sibling may own half, two others a quarter each). There is no right of survivorship, meaning no automatic transfer to the other owners at death. When a tenant in common dies, that share passes through the owner's own estate, by will, trust or intestate succession.
Joint tenancy. Civil Code section 683 describes a joint interest as one owned by two or more persons in equal shares, and when it is created by a will or transfer, it must be "expressly declared in the will or transfer to be a joint tenancy." The courts' self-help guide explains that in joint tenancy, if one owner dies, the property passes to the other.
Because joint tenancy has to be expressly declared, a house left to several children, or inherited by them without a will, is commonly held as tenants in common unless the will, trust or deed says joint tenancy.
Undivided interest. Whichever form applies, no owner holds a particular bedroom or half of the yard. Each owner has a proportional stake in the entire property and a right to use all of it.
What Each Co-Owner Can and Cannot Do Without the Others' Consent
The questions that keep heirs up at night are usually practical. Can my brother move in? Can my sister sell? Can someone change the locks? California property law answers most of them through the idea of an undivided interest.
Each co-owner generally has the right to possess and use the whole property. One owner cannot lawfully lock another out, even if that owner is the one living there.
A tenant in common can generally sell, give away or borrow against his or her own share without the others' consent. The buyer or lender then steps into that owner's position, owning a fraction, not the house. What no single owner can do is sell the entire property, sign a listing agreement that binds everyone, or put a mortgage on the whole house without the agreement of all the owners.
Money questions come up quickly. A co-owner who pays more than a fair share of the mortgage, property tax, insurance or necessary repairs may be able to seek contribution, a repayment from the others for their portion. A co-owner who lives in the house alone may, depending on the facts, owe the others an offset for the rental value of their shares. These are general principles, and how they apply depends on agreements among the owners and who paid what.
Personal property often follows different rules. Under Probate Code section 5302, money left in a joint bank account generally belongs to the surviving account holder, and money in a payable-on-death account to the named payee, rather than passing through the estate. Furniture, jewelry and household items are listed and divided separately from the house.
When Heirs Disagree: The Partition Action Under California Law
Partition is the court process California uses when co-owners cannot agree. It is a lawsuit in the Superior Court that ends the shared ownership, either by physically dividing the property (partition in kind) or by ordering it sold and dividing the money (partition by sale).
Code of Civil Procedure section 872.210 says a partition action may be brought by "a coowner of personal property" or by "an owner of an estate of inheritance, an estate for life, or an estate for years in real property where such property or estate therein is owned by several persons concurrently or in successive estates." That includes an heir who inherited a fractional share. The same section bars partition between spouses of their community or quasi-community property under that title.
For inherited homes held as tenants in common, Code of Civil Procedure section 874.311 adds the Partition of Real Property Act. It applies to real property held in tenancy in common "where there is no agreement in a record binding all the cotenants which governs the partition of the property," for partition actions filed on or after January 1, 2023.
A single-family house usually cannot be split into usable pieces, so when a court orders partition of a home, a sale is the more common result. In a partition sale, a court-appointed referee generally oversees the process, and the proceeds are divided according to each owner's interest after costs.
A contested partition case is a litigated matter handled by an attorney who litigates partition and property cases, and the details of filing or defending one are left to that attorney.
Property Tax and the Parent-Child Exclusion Under Proposition 19
Inheriting a house can change its property tax bill, sometimes a great deal. The State Board of Equalization explains that a transfer by inheritance can be a change in ownership, and once the assessor determines one has occurred, "Proposition 13 requires the county assessor to reassess the property to its current fair market value as of the date ownership changed" (State Board of Equalization, Change in Ownership – Frequently Asked Questions).
For transfers on or after February 16, 2021, Proposition 19's parent-child exclusion is Rev. & Tax. Code section 63.2. It covers the transferor's principal residence, which must 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. The exclusion covers a family home or family farm, and grandparent-to-grandchild transfers qualify only if all of the grandchild's parents who are the grandparents' children have died. Rev. & Tax. Code section 63.2 also limits how much value escapes reassessment, and the county assessor's office can confirm the current figure.
The exclusion can apply "in whole or in part." When several children inherit but only one moves in, the assessor looks at which shares qualify, so the result can differ from share to share.
A claim must be filed with the county assessor. Rev. & Tax. Code section 63.2 generally requires filing within three years after the transfer, or before a transfer to a third party, or before the eligible transferee stops living there, whichever is earliest. A claim filed within six months after the mailing of a supplemental or escape assessment notice is also timely, and a later claim, if the property has not gone to a third party, can apply going forward from the lien date of the year it is filed. Separately, the Board of Equalization's page says a change-in-ownership statement after a death is due within 150 days of the date of death if there is no probate, or with the inventory and appraisal if the estate is probated.
Property tax questions go to the county assessor's office. Income tax on a later sale is a separate subject, taken up next.
The Stepped-Up Basis and What It Means When Co-Owners Eventually Sell
Basis is the starting number used to figure gain or loss when property is sold. Sell for more than basis, and the difference is gain; sell for less, and it is a loss.
Federal law generally resets that starting number at death. Under 26 U.S.C. § 1014(a), 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 exceptions for certain valuation elections. Families call this the step-up. For a married couple's community property, 26 U.S.C. § 1014(b)(6) can extend the new basis to the surviving spouse's half as well.
With several owners, each owner's inherited share takes its own basis. Someone who already owned part of the house before the death, perhaps a sibling who was on title with the parent, may have a different basis for that earlier share, because only the portion acquired from the decedent receives the date-of-death value.
The date-of-death value matters for this reason. The courts' self-help guide asks families to estimate each item's fair market value when the person died and notes that a formal appraisal may be needed if the matter goes to court. In a California probate case, real property is generally appraised by a probate referee, an appraiser appointed for that purpose, and that value is often used in basis records.
When co-owners sell, each owner's gain or loss is figured separately, from that owner's basis and share of the proceeds. A CPA, an enrolled agent or a tax attorney reviews these calculations, because the answer turns on each owner's facts.
Paths Forward: Options Co-Owners Typically Consider
None of the options below is right for every family. Each trades money, time and relationships differently, and the comparison of keeping, renting or selling goes deeper into those tradeoffs.
Keep and rent. All owners agree to hold the house and share the rental income. This works when there is agreement on who manages it, how expenses are split and how decisions get made, often written into a co-ownership agreement.
One owner buys out the others. The buying owner pays the others for their shares, usually based on an agreed or appraised value, and the others leave title. This often fits when one heir wants to live there, which can also bear on the Proposition 19 claim described above.
Sell together. Everyone agrees to list and sell, and the proceeds are divided by ownership share after costs. Every owner has to agree to list and to accept an offer.
Sell for cash, as is. A sale to a buyer who purchases without repairs can reduce repairs, showings, financing uncertainty and time, though families weigh it differently depending on their circumstances. Price and terms vary, and co-owners still all have to agree.
Partition. When agreement fails, any co-owner may file in the California Superior Court, as explained in the partition section.
Each path carries its own tax, timeline and family consequences, which is why a real estate or probate attorney and a CPA are often part of the conversation.
When to Involve a Professional, and Which Kind
The person reading this is often the one everyone else is waiting on, and knowing who handles which piece can take some weight off.
- Probate or estate attorney. Handles moving title through probate or trust administration and can explain co-owners' rights and draft a co-ownership agreement; California attorneys are licensed by the State Bar of California.
- Partition attorney. Handles contested co-ownership disputes and partition cases in the Superior Court, a different kind of practice from settling an estate.
- CPA, enrolled agent or tax attorney. Reviews basis, gain and income-tax questions when co-owners sell.
- County assessor's office. Receives the Proposition 19 exclusion claim and answers questions about reassessment.
- Real estate agent or broker. Becomes involved once co-owners decide to list, and every owner must sign; agents and brokers are licensed by the California Department of Real Estate.
Before the house is settled, families often work through the earlier steps first, and an estate settlement checklist and the guide on inheriting a house in California lay those out. Silver Lining Estate is an educational resource, not a law firm or a real estate business.
