Partition Actions in California: How to Force or Stop the Sale of Jointly Owned Property

Any co-owner of California real property who is not married to the other owners (or who owns as tenants in common or joint tenants, not community property) has an absolute right to force a sale or division of the property through a partition action under Code of Civil Procedure § 872.210. The process typically runs four stages: complaint and lis pendens, interlocutory judgment establishing ownership interests, referee appointment and sale (or, rarely, physical division), and confirmation and distribution of proceeds, usually eight months to two years depending on how much is contested. Along the way, the court accounts for what each co-owner paid toward the mortgage, taxes, insurance, and repairs, and what each collected in rent, before dividing the money. There are very few ways to stop a partition action once filed; the main one is a valid written waiver of the right to partition.

Key takeaways

The right to partition is close to absolute in California, a co-owner does not need a reason, and does not need the other owners’ agreement (Code Civ. Proc. § 872.710).
Community property between spouses is generally not subject to a partition action; that split runs through family court instead.
The court can order a sale, a physical division (rare, mostly rural or large parcels), or, if all parties agree, a buyout by appraisal.
Before dividing proceeds, the court accounts for contributions and offsets, mortgage payments, property taxes, insurance, necessary repairs, and rents collected (Code Civ. Proc. § 872.140).
A co-owner who unreasonably delays enforcing their rights can run into a laches defense, which can reduce or eliminate an accounting claim.
Filing a partition action requires recording a lis pendens against the property (Code Civ. Proc. § 872.250), which clouds title and effectively freezes a refinance or sale until the case resolves.
Attorneys’ fees and costs are generally paid out of the sale proceeds before division, at the court’s discretion (Code Civ. Proc. § 874.010, § 874.040). Real property in California is regularly owned by people who never intended to be business partners, siblings who inherited a house, an unmarried couple who bought together, friends who went in on an investment property. It works fine until someone wants out and someone else does not. Unlike a business, there is no buyout statute that automatically kicks in. Unlike a marriage, there is no family court dissolution proceeding. The property sits there, generating no liquidity for the owner who wants to leave, until someone files.

Who can file, and who can’t

Any owner of a present or future interest in real property, including a tenant in common, joint tenant, or a beneficiary of an estate that has passed through probate, can generally file for partition. Code Civ. Proc. § 872.210 sets out who qualifies, and the list is broad. A partition action does not require majority ownership; a ten percent owner can force the issue against a ninety percent owner just as easily as an equal co-owner can.

There is one significant carve-out. Community property between married spouses is not divided through a partition action. That split runs through the family court dissolution process instead. Where a couple holds title as joint tenants but the property is actually community property in substance, or where the parties are unmarried but one asserts the other treated the relationship as a marriage, the characterization of the property can itself become a threshold fight before the partition case can proceed. Trust and estate property raises its own procedural sequencing questions, generally, partition follows the trust or probate administration rather than substituting for it.

What actually happens: the four stages

1. Complaint and lis pendens. The action begins with a verified complaint identifying the property, the ownership interests, and any liens or encumbrances of record. Under Code Civ. Proc. § 872.250, the plaintiff must record a lis pendens, a notice of pending action, immediately upon filing. From that point forward, the property is effectively unmarketable and unrefinanceable to any buyer or lender doing basic due diligence, which is often the pressure point that brings a resistant co-owner to the table.

2. Interlocutory judgment. If the right to partition is established (and it almost always is, absent a valid waiver), the court enters an interlocutory judgment determining each party’s ownership interest and the method of partition, sale, physical division, or, if everyone agrees, appraisal-based buyout. 3. Referee appointment. For a partition by sale, the court appoints a referee, typically a neutral third party, sometimes a real estate professional, to market and sell the property, or to oversee physical division where that is ordered. The referee’s role and duties are governed by Code Civ. Proc. §§ 873.010–873.830.

4. Confirmation and distribution. After sale, the court confirms the transaction, resolves any accounting claims between the co-owners (see below), pays costs and fees out of the proceeds, and distributes what remains according to each party’s adjusted interest.

Contested cases, where the co-owners fight over accounting credits, property characterization, or whether a valid waiver exists, commonly run twelve to twenty-four months. Uncontested cases, where the only real dispute was whether to sell at all, can resolve considerably faster once the lis pendens forces the issue.

Sale, division, or buyout: the three outcomes

Partition by sale is the default and by far the most common outcome. The property is sold, usually on the open market through the court-appointed referee, and proceeds are divided.

Partition in kind, physically dividing the property itself, is available in theory but rare in practice. Courts favor it for large parcels, particularly rural or agricultural land, where the property can be split without destroying its value. It almost never works for a single residential lot or a multi-unit building. Partition by appraisal allows one co-owner to buy out the others at an appraised value, but only if all parties agree to that process. A court cannot impose a buyout on an unwilling co-owner absent that agreement in most cases, the Partition of Real Property Act changes this for a defined category of inherited property (see below), but for most co-ownership situations, buyout remains negotiated, not ordered.

Inherited property: the Partition of Real Property Act

Where the property is held in tenancy in common with no written agreement governing partition, California’s Partition of Real Property Act, Code Civ. Proc. §§ 874.311–874.323, effective for actions filed on or after January 1, 2023, sets the default procedure. The Act began in 2021 as the narrower Uniform Partition of Heirs Property Act (effective January 1, 2022), and was expanded in 2023 to reach tenancy-in-common property generally, not just inherited property, when there is no governing agreement. The Act’s strongest protections are reserved for "heirs property", property in which at least 20 percent is owned by relatives and the interest of the party seeking partition was acquired from a relative (Code Civ. Proc. § 874.312(e)). For qualifying heirs property, the court must first determine fair market value, generally through an independent appraisal (§ 874.316), and co-owners who did not seek partition get a right to buy out the filing owner’s interest at that value before the court will order an open-market sale. Not every family co-ownership dispute qualifies as heirs property, and determining whether it does is often the first strategic question in a sibling or family inheritance case.

The accounting: who owes what before the money gets split

This is where most contested partition actions are actually fought, and it is frequently the more consequential dispute than whether the sale happens at all.

Before dividing sale proceeds, the court adjusts each party’s share based on the financial history of the co- ownership, exercising its general equitable power under Code Civ. Proc. § 872.140. As the Court of Appeal put it in Wallace v. Daley (1990) 220 Cal.App.3d 1028, 1035–36, "every partition action includes a final accounting according to the principles of equity for both charges and credits upon each cotenant’s interest."

Credits to the paying co-owner typically include mortgage principal and interest, property taxes, insurance premiums, and necessary repairs and improvements that preserved or increased the property’s value.
Charges against a co-owner in exclusive possession typically include the fair rental value of the property, or actual rents collected from a third-party tenant, that were not shared with the other owners.
A cotenant who paid a disproportionate share of the purchase price is generally entitled to reimbursement for that disproportionate contribution (Milian v. De Leon (1986) 181 Cal.App.3d 1185, 1195). Delay in asserting these claims is not automatically fatal, there is no fixed statute of limitations on apportioning credits and offsets in a partition accounting (Adams v. Hopkins (1904) 144 Cal. 19), but equitable principles of laches can still bar a stale claim where the delay prejudiced the other side (Akley v. Bassett (1922) 189 Cal. 625). See the companion article on laches below for detail. Getting the accounting right, and documenting it early, before memories and records fade, often determines the real economic outcome of the case far more than the sale itself.

What stops a partition action (and what doesn’t)

The right to partition is described by California courts as close to absolute, and the list of defenses is genuinely short.

A valid written waiver. Co-owners can contractually agree to waive the right to partition, but the waiver must be clear, and courts scrutinize these provisions closely, particularly where they would lock a co-owner into indefinite, involuntary co-ownership.

Equitable defenses in narrow circumstances. California courts have recognized that equitable defenses, including laches, may apply in a partition proceeding (De Roulet v. Mitchel (1945) 70 Cal.App.2d 120). A partition action can also be resisted where a party’s claimed ownership interest is disputed, or where the property is actually community property subject to family court jurisdiction.

What does not work: simply not wanting to sell, disagreeing about timing or price, or claiming sentimental or family attachment to the property. None of these are legal defenses to a properly filed partition action. Equitable title claims occasionally arise on the other side, where a party who is not on title claims an ownership interest based on contributions or an agreement. California courts have long recognized that "the owner of an equitable title is the owner of real property" for partition purposes (Crowley v. Crowley (1903) 140 Cal. 141, 145), and such a party may need to establish that interest before, or as part of, the partition case. See the companion article on equitable title and constructive trust claims below.

Costs, fees, and who pays

Partition actions involve filing fees, referee fees and costs (including any real estate commission on a sale), and attorneys’ fees. Under Code Civ. Proc. §§ 874.010 and 874.040, the court has broad discretion to allocate "the costs of partition," including reasonable attorneys’ fees, among the parties in proportion to their interests, and those costs are typically paid out of the sale proceeds before distribution, rather than out of pocket during the case. That said, fee allocation is discretionary, not automatic, and a co-owner who litigated unreasonably or forced unnecessary costs can end up bearing a disproportionate share.

Partition attorneys by location

Stone LLP handles partition actions across California from three offices:

Orange County partition actions in Irvine, Newport Beach, and Laguna Beach.
Century City and Los Angeles partition actions in Beverly Hills, Santa Monica, and the greater Westside.
San Jose partition actions in San Jose and Silicon Valley.

Frequently asked questions

Can one co-owner force the sale of a house in California?

Yes. Any co-owner, regardless of the size of their ownership share, generally has an absolute right to force a sale through a partition action under Code Civ. Proc. § 872.210, unless a valid written waiver applies or the property is community property subject to family court jurisdiction instead.

How long does a partition action take in California?

An uncontested case can resolve in well under a year once the lis pendens applies pressure. A contested case involving disputes over accounting credits, property characterization, or a claimed waiver commonly takes twelve to twenty-four months.

Can a partition action be stopped?

Rarely, and only through a valid written waiver of the right to partition, a successful challenge to the plaintiff’s ownership interest, or a determination that the property is community property belonging in family court. Simply objecting to the sale is not a defense.

What happens if my co-owner won’t pay their share of the mortgage or taxes?

The paying co-owner can generally recover credit for those payments in the accounting phase of a partition action under Code Civ. Proc. § 872.140, offset against any rental value owed for the other party’s exclusive use of the property, subject to a laches defense if the claim was unreasonably delayed.

Who pays for a partition action, do I have to pay upfront?

Filing fees and litigation costs are typically incurred as the case proceeds, but Code Civ. Proc. §§ 874.010 and 874.040 give the court discretion to pay attorneys’ fees and costs of partition out of the sale proceeds before the remaining balance is divided among the co-owners.

We inherited the property together and my sibling won’t sell, what are my options?

This is a common scenario, and it may trigger the Partition of Real Property Act’s heightened protections for "heirs property," which require an independent appraisal and give non-filing family co-owners a right to buy out your interest at that value before the court will order an open-market sale.

Can an unmarried couple partition jointly owned property?

Yes. Unmarried co-owners, whatever the personal relationship, are treated the same as any other tenants in common or joint tenants for partition purposes, since the community property exception applies only to married spouses.