For high-value California real estate, like a Newport Beach beachfront home, a Beverly Hills estate, or a Los Angeles income property, the stakes often run into the millions. Every month the dispute drags on, value bleeds away through carrying costs, missed market timing, and rising legal bills.

So California law gives you a way out. It is called a partition action. In fact, it is one of the strongest tools in real estate litigation. Despite what many co-owners hear, the right to use it is almost absolute.

This guide explains how to force the sale of co-owned property in California. You will learn what a partition action looks like in practice, what it really costs, and where the smart fights happen.

The Right Every California Co-Owner Has

Under California Code of Civil Procedure section 872.210, any owner of an undivided interest in real property has the right to file a partition action. In fact, California courts treat this right as nearly absolute. As a result, the party seeking partition does not need permission from co-owners. They do not need to prove wrongdoing. And they do not need to give a “good reason.”

In addition, California Courts of Appeal have repeatedly confirmed that partition is a matter of right, not judicial discretion. So the only way to defeat a partition action is to raise one of a narrow set of equitable defenses. However, those defenses almost always fail.

The takeaway is simple. If you co-own California real estate as a tenant in common, and no enforceable written agreement waives your right to partition, then you can force the issue.

Three Ways to Force the Sale of Co-Owned Property in California

When most people say they want to force the sale of co-owned property, they really mean a partition by sale. However, California actually recognizes three different forms of partition.

Partition in kind physically splits the property among the co-owners. While this was the historical default, it is rarely practical for homes or commercial buildings. After all, you cannot really cut a single-family home in half.

Partition by sale orders the property sold. Then the court splits the proceeds among co-owners based on their ownership percentages, after accounting for credits and offsets. In fact, this is the outcome in the vast majority of California partition actions.

Partition by appraisal lets one co-owner buy out the others at an appraised price. While this option was rare under older statutes, it has become much more central under the Partition of Real Property Act.

For most California co-owners, especially those holding high-value coastal or city property, the real question is not whether to file. Instead, it is how to navigate partition by sale effectively.

What Changed in 2023: The Partition of Real Property Act

On January 1, 2023, California’s partition law changed in big ways. Specifically, the Partition of Real Property Act (AB 2245), codified at Code of Civil Procedure sections 874.311 through 874.323, now applies to almost every tenancy-in-common property where the co-owners have not signed a written agreement governing partition. As a result, the Act covers most California co-ownership situations.

Importantly, the Act introduced three provisions that reshaped partition strategy.

First, a buyout right for non-petitioning co-owners. Before any forced sale, non-petitioning co-owners now get a chance to buy the petitioning co-owner’s share at a court-determined fair market value. This is a meaningful shift. So a co-owner who wants to keep the property can now potentially do so, even over the objection of the partitioning party.

Second, open-market sales preferred over auctions. If a sale becomes necessary, the Act now requires the court to order an open-market sale through a licensed real estate broker. Also, the sale price cannot fall below the appraised fair market value. As a result, sealed-bid and auction sales, which historically depressed prices, are now disfavored unless the court finds them more economical.

Third, fair market valuation by an independent appraiser. The court orders an independent appraisal under judicial supervision. Therefore, arguments about lowball or inflated property values are now much harder to make.

For high-value California real estate, these changes matter enormously. After all, the old system often produced fire-sale prices. The new system preserves market value, which protects every co-owner with serious equity at stake.

For a complete deep dive into the Partition of Real Property Act, including how it affects inherited property, TIC investments, divorced spouses still on title, and unmarried partners with joint property, see our pillar guide on the California Partition of Real Property Act.

Step by Step: How a California Partition Action Works

Here is the realistic sequence of events from filing to sale.

Filing the Verified Complaint

First, your attorney files a verified partition complaint in the Superior Court of the county where the property sits. The complaint identifies the property. It names every party with a recorded or known interest, including co-owners, lenders, lienholders, and easement holders. Then it requests a court order directing partition.

Recording a Lis Pendens

Next, your attorney records a notice of pending action, also called a lis pendens, with the County Recorder. As a result, the world is on notice that the property is in litigation. So the lis pendens stops your co-owner from transferring or refinancing the property to defeat the partition. In fact, this single step often does more strategic work than anything else in the case.

Service and Response

Then your attorney serves each defendant. After service, the defendants have 30 days to file a response. In practice, many partition cases settle here. Once a co-owner sees the lawsuit, the cost of fighting often outweighs the cost of negotiating a buyout or cooperative sale.

Interlocutory Judgment

If the case does not settle, the court enters an interlocutory judgment. This judgment decides the interests of each co-owner. It also decides whether partition in kind or by sale is appropriate. And it decides whether the property qualifies for treatment under the Partition of Real Property Act. So this is a critical milestone. After the court enters the interlocutory judgment, the path to sale is mostly procedural.

Cotenant Buyout Period (Under the PRPA)

Next, if the property falls under the Partition of Real Property Act, the court gives non-petitioning co-owners a chance to buy out the petitioning party at the appraised value. However, the buyout must close within statutory deadlines. If no buyout happens, the case moves to sale.

Appointment of a Partition Referee

Then the court appoints a partition referee under Code of Civil Procedure section 873.010. The referee is usually a real estate professional who manages the sale. In addition, referees have wide authority to retain brokers, set listing prices, accept offers, and report back to the court.

Open-Market Sale

Next, the referee works with a licensed broker to list and market the property. The referee reviews offers, and in most cases the court must approve the final sale. After approval, the sale closes through standard escrow procedures.

Final Accounting and Distribution

Finally, before the court distributes sale proceeds based on ownership percentages, it conducts an accounting. This step is where partition cases are often won or lost financially. In fact, most co-owners underestimate what is actually at stake here.

The Accounting Fight: Where the Real Money Is Won

Most clients focus on the sale itself. However, experienced partition attorneys focus on the accounting.

For example, if you have been paying the mortgage, property taxes, and insurance on the property while your co-owner contributed nothing, then you are entitled to credits before any pro-rata distribution. In contrast, if your co-owner has been living in the property exclusively, you may be entitled to charge them rental value for that occupancy.

These calculations compound quickly. For instance, on a Beverly Hills property where the mortgage runs $20,000 per month and one co-owner has carried it alone for three years, the credit alone exceeds $700,000. And that figure is separate from any equity split.

In addition, the accounting also addresses:

• Capital improvements that increased property value
• Necessary repairs and maintenance
• Property tax and insurance payments
• Rental income from the property and how it was applied
• Waste, meaning damage or neglect by a co-owner that reduced property value

So this is technical, document-heavy work. As a result, it rewards organized records and aggressive attorney advocacy. In fact, the difference between a well-prepared accounting and a sloppy one is often six figures in a high-value partition case.

How Much Does It Cost to Force the Sale of Co-Owned Property?

Costs vary significantly based on case complexity, party cooperation, and property value. For high-value California property, realistic ranges are:

• Uncontested partition where the co-owner cooperates after the suit is filed: roughly $15,000 to $30,000 in attorney fees, plus referee and broker fees paid from sale proceeds.
• Moderately contested partition with disputes over accounting, valuation, or buyout rights: roughly $40,000 to $100,000.
• Heavily contested partition involving counterclaims, partition defenses, or fraud allegations: $100,000 and up.

In addition, Code of Civil Procedure section 874.040 lets the court split partition costs, including reasonable attorney fees incurred for the common benefit, against the sale proceeds. So the legal cost of obtaining partition, separate from the cost of fighting over the accounting or defenses, is often shared by all co-owners pro rata. In fact, this is one of the most powerful and underused features of the partition statute.

How Long Does a Partition Action Take?

In general, a cooperative partition resolves in six to nine months. By contrast, a contested partition runs twelve to twenty-four months. Furthermore, cases involving the PRPA buyout right or major accounting disputes can extend longer.

Meanwhile, the lis pendens does meaningful work during this period. Specifically, it freezes the property and stops your co-owner from manipulating title or financing while the case proceeds.

Common Defenses (and Why They Usually Fail)

California co-owners often raise the following defenses. However, most do not work in practice.

“There’s a written agreement waiving partition.” Indeed, this is the strongest possible defense. But it works only if a genuine, enforceable, written agreement actually exists. By contrast, oral agreements, informal understandings, and partnership-style arrangements usually do not qualify.

“Partition would be inequitable.” While equitable defenses to partition are theoretically available, the bar is high. Specifically, California courts grant them rarely, usually only where the petitioning party engaged in fraud or unclean hands directly tied to the acquisition of the property.

“I don’t want to sell.” Under the old statute, this defense meant nothing at all. However, under the Partition of Real Property Act, it now means the co-owner may exercise the statutory buyout right. But it does not prevent partition itself.

“I made all the improvements and contributed more.” This is an accounting argument, not a defense to partition. As a result, the court addresses improvements and unequal contributions during the final distribution, not by blocking the sale.

Can You Avoid Partition Through a Negotiated Buyout?

Yes. And in many high-value cases, this is the best outcome for everyone involved.

Once you file a partition action, the cost calculus changes for every party. So co-owners who refused to negotiate before filing often become reasonable once they receive served papers. In fact, many cases settle within the first sixty to ninety days through a negotiated buyout, a refinance that cashes out the exiting party, or a private sale on cooperative terms.

Therefore, the strategic art is structuring the filing in a way that maximizes settlement leverage without sacrificing your fallback position if the case proceeds to trial.

Strategic Considerations for High-Value California Property

When you set out to force the sale of co-owned property worth $3 million in Newport Beach, the strategy is very different than for a $400,000 starter home. So for high-value real estate, several factors matter much more.

Market timing. A poorly timed sale during a downturn can cost hundreds of thousands of dollars. Therefore, an experienced partition attorney coordinates litigation timing with market conditions where possible.

Tax exposure. Capital gains, depreciation recapture, and the potential for 1031 exchanges all need coordinated planning with tax counsel. As a result, the wrong sale structure can create needless tax liability that erodes recovery.

Lender cooperation. Properties subject to large existing mortgages need coordination with lenders. Furthermore, the deed-of-trust language may affect sale options.

Privacy. High-net-worth co-owners often want partition handled with as little public visibility as possible. So there are procedural choices that affect what becomes part of the public court record.

Buyout valuation. Under the Partition of Real Property Act, the buyout option is priced based on appraisal. Therefore, choosing the right appraiser, and effectively challenging the wrong one, often moves valuations by 10 to 20 percent. On a $4 million property, that is a six-figure swing.

So these factors are precisely why high-value California partition actions reward sophisticated counsel.

When to Call a Partition Attorney

If you co-own California real estate and any of the following is true, then you should speak with a partition attorney soon:

• Your co-owner refuses to sell or refuses to buy you out at a fair price
• One co-owner is carrying the property financially while the other contributes nothing
• A co-owner is occupying the property exclusively and refusing to pay fair rental value
• A co-owner is damaging or neglecting the property
• You inherited an interest in property along with relatives who do not agree on what to do with it
• A former business partner is using a co-owned property in ways that conflict with your interests
• You suspect a co-owner is trying to transfer, refinance, or encumber the property to defeat your interest

At Rokita Law P.C., we help clients force the sale of co-owned property throughout Los Angeles County, Orange County, San Diego County, and Southern California. Our real estate litigation practice represents both plaintiffs seeking to force sale and defendants protecting their interests in co-owned property.

From our offices in Beverly Hills and Newport Beach, Amanda Rokita and her team advocate for co-owners facing complex, high-value partition disputes. For additional context on partition strategy, see our overview on filing a partition action with our firm.

If you need to force the sale of co-owned property in California, schedule a confidential consultation online or call (888) ROKITALAW.

This article is for general informational purposes only and does not constitute legal advice. Reading this article does not create an attorney-client relationship with Rokita Law P.C. Every California partition action involves unique facts and circumstances. So you should consult a qualified California real estate litigation attorney before taking action.