Can a Co-Owner Force the Sale of Property in New York?

Co-owning property works until it doesn’t. Two siblings inherit a house from a parent, and one wants to sell while the other wants to hold on to it. Former partners split up but still share a deed. Business partners who bought an investment property together stop agreeing on what to do with it. In every one of these situations, one person’s refusal to sell can bring everything to a standstill.

That standstill is not permanent. New York law gives any co-owner a legal route to force the issue, called a partition action. It is not a fast process, and it is not without cost, but it exists precisely for situations where co-owners cannot reach an agreement on their own.

What a Partition Action Is

A partition action is a lawsuit filed in New York Supreme Court that asks a judge to resolve a co-ownership deadlock. Under Article 9 of the Real Property Actions and Proceedings Law, any joint tenant or tenant in common can bring one. You do not need the other owner’s consent, and you do not need to explain why you want out. What you need to establish is that you have legal title to a share of the property.

The right to bring a partition action is strong under New York law, but courts treat it as equitable, meaning they apply fairness principles in deciding how to resolve the case. One practical consequence of this is that a prior agreement between co-owners explicitly restricting or waiving the right to partition for a set period can be enforceable. If you co-own property under the terms of a written agreement, that agreement is worth reviewing before any other step.

What Kinds of Property This Covers

Partition is not limited to single-family homes. It reaches essentially any real property held by co-owners: condominium units, multi-family buildings, commercial property, and vacant land. The basic framework applies across these property types, although the ownership structure can affect how a case proceeds, and in some situations whether a partition action is the right vehicle at all.

Ownership through a business entity is where this distinction becomes important. If two or more corporations or limited liability companies hold title to the same property together as tenants in common, one of those entities can bring a partition action against the others. The entities are the co-owners, and the statute applies in the ordinary way.

The situation is different when a single company owns the property outright and the dispute is between its members or shareholders. Under New York law, a membership interest in a limited liability company is personal property, and a member has no interest in the specific property the company owns. Two members who disagree about selling a building held by their company are not co-owners of that building in the eyes of the partition statute. Their dispute runs through the company’s operating agreement and the law governing business entities, not through a partition action. Sorting out which situation applies is a question worth answering before anything gets filed.

Cooperative apartments occupy a category of their own. A co-op owner holds shares in a corporation and a proprietary lease, which is personal property rather than real property. Despite that, New York courts have held that shares in a cooperative unit can be partitioned under the same article of the statute, reasoning that the real dispute concerns occupancy of the apartment rather than the stock certificate. A co-owner who signed the proprietary lease and holds shares in the unit has standing to seek partition. Governing documents can still complicate the picture. Some proprietary leases and bylaws restrict partition, and many cooperatives retain the right to approve any purchaser even after a court directs a sale, so those documents need review before anything is filed.

Physical Division or Forced Sale

When a court grants partition, it has two options: physically divide the property among the co-owners, or order it sold and divide the proceeds. For most residential and commercial properties in New York, physical division is not realistic. A house cannot be split in two without destroying its value, and a single lot rarely lends itself to clean division. Courts recognize this, and for improved properties, particularly in developed areas, a court-ordered sale is almost always the outcome.

The sale is conducted under court supervision. A referee is typically appointed to oversee the process, and the property is sold on the open market or through a court-supervised auction depending on the circumstances. The court then distributes proceeds among the co-owners according to their respective ownership interests, subject to any adjustments it orders.

The Accounting: Where the Real Disputes Usually Live

Dividing the sale proceeds sounds straightforward until you account for the fact that co-owners rarely contribute equally to a property over time. One owner may have been making the mortgage payments alone. Another may have paid for a new roof, or covered years of property taxes, or collected rent without sharing it.

New York law addresses this through the court’s equitable powers in a partition proceeding. The court can adjust how the proceeds are divided to reflect each co-owner’s financial contributions, including mortgage payments, taxes, insurance, and necessary repairs, as well as deductions for things like rent collected or exclusive use of the property. This does not mean every dollar spent will be reimbursed. The court evaluates the circumstances and determines what adjustments are equitable under the facts of the case. In contested partition cases, this accounting phase is often where the most significant disputes arise and where the final distribution differs most from an equal division of the proceeds.

When the Property Was Inherited: Additional Protections Apply

If the property came to co-owners through inheritance, an additional layer of law applies. New York’s Uniform Partition of Heirs Property Act, codified at RPAPL Section 993 and effective since 2019, was designed to protect families from losing inherited property to a forced sale before they have had a meaningful opportunity to resolve the situation.

Under this framework, when the property qualifies as heirs property, the court must hold a settlement conference, commission an independent appraisal to establish fair market value, and give co-owners the option to buy out the interest of the owner seeking partition at that appraised value. If no buyout occurs and a sale is necessary, the property must be listed on the open market through a court-selected broker rather than sold at a courthouse auction, so heirs receive fair market value rather than a distressed-sale price.

What the Timeline Usually Looks Like

Partition actions are not quick. A contested case, where co-owners dispute the accounting, the ownership shares, or the terms of the sale, can take 12 to 24 months from filing to closing, though timelines vary by county, court calendar, and case complexity. An uncontested matter, where co-owners agree on a buyout or private sale but need a legal framework to finalize it, can resolve in four to eight months. How cooperative the co-owners are, and whether the accounting becomes its own battleground, drives that range.

Attorney fees, referee fees, appraisal costs, and carrying costs during the proceeding all accumulate. Negotiation remains possible throughout the case, and a partition filing sometimes prompts a co-owner to engage seriously for the first time. Many partition actions resolve before the court orders a sale.

How the Siegel Law Firm Can Help

Partition actions require both real estate knowledge and litigation experience, and how the case is handled early can shape the outcome throughout. Whether you are the co-owner looking to force a sale or the one trying to protect your interest, knowing the legal framework before the first filing changes what options are available to you.

The Siegel Law Firm handles partition actions and co-ownership disputes for clients throughout New York City, Long Island, and New York State. Call 844-522-4-LAW or email info@thesiegelawfirm.com to discuss your situation.