Key Takeaways

• Any co-owner of California real property holds an “absolute” right to partition under Code of Civil Procedure section 872.210, subject to limited waiver exceptions.
• California’s Partition of Real Property Act (Code of Civil Procedure sections 874.311 through 874.323, enacted by AB 2245) governs partition of tenancy-in-common real property and adds buyout, appraisal, and open-market sale procedures designed to preserve value.
• Partition can be by sale, in kind (physical division), or by appraisal — courts strongly favor partition by sale for most residential property because physical division is impractical.
• A written cotenancy or TIC agreement can waive or modify the right to partition; courts also recognize implied waiver in narrow circumstances.
• Most contested partition actions resolve in roughly nine to eighteen months, though timelines and total cost vary substantially with the complexity of the accounting and any disputes over the buyout or sale price.

How to Force the Sale of a Co-Owned Property in California (Partition Action Guide)

Co-ownership of California real estate often starts with the best intentions. Siblings inherit the family home together. An unmarried couple buys a condo. Friends pool resources for a Bay Area duplex. Business partners take title to a commercial building.

And then life happens. One owner wants to sell; the other refuses. Someone stops paying their share of the mortgage. A new spouse moves in and the dynamic shifts. The property generates rental income that nobody can agree how to split. Years pass, the property appreciates, and the gap between what the owners want only widens.

A partition action is California’s legal mechanism for breaking the deadlock. This guide walks you through how it works, what to expect, and when it makes sense.

Stuck in a co-ownership dispute? You have more options than you may realize.

Bay Legal, PC handles partition actions and pre-litigation buyouts throughout California. Call (650) 668-8000 or schedule a consultation at baylegal.com/contact.

What is a partition action?

A partition action is a lawsuit that asks a California court to divide co-owned real property or, more commonly, order it sold with the proceeds distributed among the co-owners. It is governed by the Partition of Real and Personal Property Act at Code of Civil Procedure sections 872.010 through 874.323. The right to partition is established at section 872.210 and is described in California case law as “absolute” — meaning a co-owner does not generally need consent from the other owners and does not have to prove a particular hardship to bring the action.

That said, the right is not unlimited. A binding written agreement among the co-owners can waive partition, and California courts also recognize implied waiver in specific situations (LEG Investments v. Boxler (2010) 183 Cal.App.4th 484). For most co-owners without a TIC agreement, however, partition is available.

Who can file?

Any person with an undivided ownership interest in the property — including tenants in common, joint tenants (subject to severance principles), and most partners — can file. Spouses with community property interests generally cannot partition during marriage; community property is divided through the family law process.

Partition by sale vs. partition in kind vs. partition by appraisal

California recognizes three forms of partition, but for residential property only two of them practically matter.

Partition by sale

The court orders the property sold and the proceeds distributed among the owners according to their respective shares (after accounting for various offsets — more on those below). This is the default and the most common outcome for residential real estate, because physical division is almost always impractical for a single-family home, a condominium, or a small income property.

Partition in kind

The court physically divides the property among the owners. This is generally feasible only for large agricultural or vacant land where each owner can take a viable parcel. It is rare for residential property.

Partition by appraisal

The Partition of Real Property Act added an appraisal-and-buyout mechanism (Code of Civil Procedure sections 874.316 and 874.317): a court-appointed appraiser sets a value, and a non-petitioning cotenant has a right to buy out the petitioning cotenant’s interest at appraised value before any forced sale. If no cotenant exercises that right, the court can then order an open-market sale under section 874.320 — often through a real estate broker rather than at a courthouse-step auction — to preserve value.

The Partition of Real Property Act: what changed

California adopted the Partition of Real Property Act through AB 2245 (Chapter 82, Statutes of 2022), which became operative on January 1, 2023. The Act applies broadly to tenancy-in-common real property where there is no agreement binding all the cotenants governing partition. It was a significant departure from the prior partition framework because it:

• Created a structured buyout right for non-petitioning cotenants based on a court-supervised appraisal.
• Required open-market commercially reasonable sale procedures when partition by sale is ordered, rather than allowing only courthouse-steps auctions.
• Restricted cost recovery against a cotenant who opposes the partition (Code of Civil Procedure section 874.312.5).
• Required real estate broker reporting to the court on listing, marketing, and offers (Code of Civil Procedure section 874.321).

Common citation error: Some online sources refer to “AB 1755” as California’s expanded partition law. That is incorrect. AB 1755 of the 2023-24 Regular Session is a consumer warranty (Lemon Law) procedural bill. California’s modern partition framework was created by AB 2245 and is codified at Code of Civil Procedure sections 874.311 through 874.323.

Waiver of partition: can your co-owner block it?

Yes, in narrow circumstances. A common example is an express written waiver in a tenancy-in-common agreement, condominium CC&Rs, or partnership agreement. California courts have also found implied waiver where the conduct of the co-owners and the surrounding circumstances clearly demonstrate an intent not to partition. The bar is high; absent strong evidence, courts generally enforce the absolute statutory right.

A common pattern: co-owners signed a casual side letter or oral understanding that one cotenant would live in the property indefinitely. Whether that side arrangement defeats partition depends heavily on the written record, the consideration involved, and the specific facts. This is one of the areas where an early consultation with a California real estate attorney can save substantial time.

Worried that a written agreement might block your partition right? We can read it.

Bay Legal, PC reviews co-ownership agreements and advises on partition strategy throughout California. Call (650) 668-8000 or schedule a consultation at baylegal.com/contact.

The accounting: who gets what at the end

Co-owners rarely contribute equally over time. One pays more mortgage; another pays the property tax; a third pays for the new roof. One occupies the property without paying the others rent. A partition action lets the court untangle all of this through what is called an “accounting.”

Common accounting items include:

• Mortgage principal and interest payments.
• Property tax payments.
• Insurance premiums.
• HOA dues.
• Major repairs and capital improvements.
• Fair rental value offsets when one cotenant has exclusive possession and has ousted the others (Hunter v. Schultz (1966) 240 Cal.App.2d 24).
• Rents collected and retained by one cotenant.
• Reasonable property-management expenses.

Accounting disputes often dominate partition litigation. Strong documentation matters: contemporaneous bank statements, canceled checks, contractor invoices, and tax records. Co-owners who have been keeping receipts for years often find themselves in dramatically better positions than those who have not.

Timeline and cost: what to expect

Contested California partition actions usually run between nine and eighteen months from filing to final order, though simpler matters resolve faster and complex accountings with multiple parties and appraisal disputes can take longer. Costs depend on:

• Whether the parties contest the right to partition itself.
• The complexity of the accounting.
• Disputes over the appraisal or the sale price.
• Broker selection and marketing strategy under the Partition of Real Property Act.
• Discovery and motion practice.

Many partition cases settle. A typical settlement pattern: after the complaint is filed and the right to partition is clearly established, the parties agree on an appraised value, one cotenant buys the other out, and the case dismisses. Settlement avoids the cost of an open-market sale (broker commission, staging, holding costs) and lets the remaining owner keep the property.

Alternatives to partition: when not to file

Partition is the heavy hammer. Sometimes other tools work better:

• A negotiated buyout, with or without a formal appraisal.
• Mediation through a neutral with real estate experience.
• A written TIC agreement or cotenancy agreement going forward, including a buy-sell mechanism for future disputes.
• A refinance that takes one owner off the loan and title in exchange for a payout.
• A 1031 exchange when the property is held as investment and tax deferral matters.

A California real estate attorney can help you evaluate whether partition is the right tool for your situation, or whether a negotiated solution will be faster, cheaper, and less destructive to the family or business relationship.

Considering partition? Talk to us before you file.

Bay Legal, PC can scope your case, evaluate likely outcomes, and explore alternatives. Call (650) 668-8000 or schedule a consultation at baylegal.com/contact.

Frequently Asked Questions

Can one co-owner force a sale without the other’s consent?

Yes, in most cases. The right to partition under Code of Civil Procedure section 872.210 is absolute, subject only to limited waiver exceptions. A co-owner who does not want to sell can sometimes buy out the petitioning cotenant under the Partition of Real Property Act’s appraisal-and-buyout procedure, but they cannot generally block partition outright.

What if my co-owner has been living in the property without paying me anything?

You may be entitled to fair rental value offsets in the partition accounting, particularly if there has been an ouster — a clear act by the occupying cotenant excluding you from possession. The standard comes from cases like Hunter v. Schultz, and it requires more than just one cotenant choosing not to live there.

Can I keep the property and force my co-owner out?

Under the Partition of Real Property Act, if you do not want to sell, you can buy out your co-owner’s interest at appraised value through the section 874.317 procedure. That is often the cleanest path for a cotenant who wants to keep the property — but you need to be ready and able to fund the buyout.

Will a partition action ruin my relationship with my sibling?

Often, partition is filed only after the relationship is already strained. Many California partition attorneys (including Bay Legal, PC) try mediation and negotiated buyouts before filing, precisely to preserve relationships when possible. When a relationship is already broken, partition can sometimes provide closure and allow everyone to move on.

Do I need a partition agreement before buying property with someone?

If you are buying property with a family member, business partner, or friend, a written TIC or cotenancy agreement is strongly recommended. It can address financial contributions, occupancy, decision-making, and dispute resolution before things go wrong. Talk to an attorney before signing the purchase contract — retrofitting an agreement after closing is harder.

Disclaimer

This article is for general informational purposes only and does not constitute legal, tax, or financial advice. Reading this article and contacting Bay Legal, PC does not create an attorney-client relationship. The information here is specific to California law, which changes over time, and your situation may involve facts that change the analysis. If you have a real estate question that matters to you, speak with a licensed California attorney about your specific circumstances.