Buying Out a Co-Owner Instead of Forcing a Sale
By Josué Cristóbal Guerrero, Founding Partner · Published

In short
Partition is a court case that can divide or sell co-owned property. For actions filed on or after January 1, 2023, the Partition of Real Property Act can provide an appraisal and cotenant buyout before a sale when the property is held as a qualifying tenancy in common and no recorded binding agreement governs partition. A negotiated buyout reached without filing is normally faster and less expensive.
The buyout right
Before 2023, a co-owner who wanted out could file for partition, and the practical outcome was often a sale. Sometimes that meant an auction, at a price below what the property would fetch on the open market. Co-owners who wanted to keep the property had limited ability to stop that.
The Partition of Real Property Act changed the sequence. Where it applies, the court determines the value of the filing owner's interest. The remaining co-owners are then given the opportunity to purchase that interest at the determined value. Only if nobody takes it up does the matter proceed toward a sale.
For families holding an inherited property this is the significant change. The relative who wants their money out can still get it. The relative who wants to keep the house now has a defined way to do so.
How the value gets set
The court determines the fair market value of the property, which is what it would sell for today. It ordinarily does so through an appraisal. The buyout price then follows from the filing owner's fractional share of that figure.
The figure is the property's value, not what a forced sale would produce. That is one reason the mechanism tends to serve both sides better than an auction. It also means the appraisal is worth engaging with properly, because it sets the number that everything else follows from.
Doing it without filing
Everything above is available by agreement, without a lawsuit, and usually on better terms. The obstacles to a private buyout are almost always the same three. Agreeing a value. Finding the money. Dealing with the loan already on the property.
An independent appraisal that both sides agree to accept in advance resolves the first. A refinance in the buying owner's name usually resolves the third, and it needs to be arranged before the transfer rather than after. The second is a financing question. It is worth answering honestly early, because a buyout the buying owner cannot fund wastes months.
What to record when it is done
A buyout is a transfer of a real property interest and it needs to be documented as one. That means a deed conveying the interest, with the correct vesting, which is the wording that sets out how the remaining owners will hold. It means attention to whether the transfer triggers reassessment, which is the county resetting the property tax value. And it means a written release of any claims between the owners for contributions and occupation.
Buyouts done informally between family members, on trust and without documents, produce a disproportionate share of the disputes we later see.
The three obstacles to a private buyout
Value. Resolve it with an independent appraisal, chosen jointly, that both sides agree in advance to accept. The commitment to accept it is what makes it work. Otherwise the appraisal becomes the start of the argument rather than the end.
Funding. The buying owner usually needs a refinance, and the new loan has to be approved before the transfer rather than after. A buyout that the buying owner cannot fund wastes months and hardens both positions.
The existing loan. If both owners are on it, the selling owner remains liable until it is refinanced or assumed, whatever the deed says. People do end up on a mortgage for a property they no longer own. It is common, and it is avoidable.
The accounting nobody wants to have
Before agreeing a number, both sides should work through the same list the court would use in a partition. That list is an accounting of who paid what. It covers mortgage principal and interest paid by each owner, taxes and insurance, necessary repairs and improvements, and rent received. It also covers the value of exclusive occupation, meaning what it was worth to have one owner living there alone.
Doing this openly usually moves the number, sometimes substantially. It is better to move it during a negotiation than to discover it in a proceeding. The owner who has been paying everything usually has a stronger claim than they realize. The owner who has been living there usually has a weaker one.
Documenting it properly
A deed conveying the interest, with the remaining owners' vesting stated correctly. Vesting is the wording on the deed that sets out how they will hold the property going forward.
Attention to whether the transfer triggers reassessment, which is the county resetting the property tax value. Transfers between co-owners are not automatically exempt, and for an inherited property the Proposition 19 position may also be in play.
A written release of claims between the owners, covering contributions, occupation and rents. That closes the accounting rather than leaving it open.
Confirmation that the outgoing owner is released from the loan.
Buyouts done on a handshake between family members produce a disproportionate share of the disputes we see two and three years later.
This article is general information about California law and is not legal advice for any specific situation. If you are dealing with this issue, the facts of your matter will change the analysis.
Related practice
More on co-ownership and partition
Answers before you call
