When Co-Owners Can't Agree

Co-owning property in New York often begins with the best of intentions. Two siblings inherit a house from a parent. A group of investors purchases a building together. Former partners hold title on a commercial property they once shared a vision for. But circumstances change, relationships deteriorate, and at some point one owner wants out while the other does not. When negotiation fails, New York courts offer a legal remedy called a partition action.

Partition actions have become an increasingly active area of real estate litigation, and for good reason. New York's high property values, combined with the frequency of inherited and jointly purchased real estate, create a steady stream of ownership disputes that cannot always be resolved without court intervention.

What Is a Partition Action?

A partition action is a lawsuit brought in New York State Supreme Court by one or more co-owners of real property asking the court to resolve a deadlock over shared ownership. Under Article 9 of the Real Property Actions and Proceedings Law (RPAPL), any co-owner generally has the right to seek partition, and the court can either physically divide the property or order it sold with the proceeds distributed among the owners.

Physical division, known as partition in kind, is rarely ordered in New York City and its surrounding boroughs. When a property is a single-family home, a condominium unit, or a small multi-family building, physical division is typically impractical. In those cases, courts almost always order a judicial sale, with each owner receiving their proportionate share of the net proceeds after debts and carrying costs are accounted for.

How These Disputes Typically Arise

The most common source of partition litigation is inherited property. When two or more heirs receive equal shares of a property through an estate, they may have very different ideas about what to do with it. One heir wants to sell immediately. Another wants to hold the property as a rental. A third has been living there for years and is not prepared to move. Without a written agreement governing the ownership, these disagreements can quickly become irreconcilable.

Partition actions also arise regularly between business partners and investors who acquired property together. A falling-out between partners, a change in investment goals, or a dispute over how rental income is being managed can all trigger litigation. Former romantic partners who purchased property together and have since separated face similar dynamics, often with the added complexity of overlapping financial claims.

What the Court Considers

New York courts treat partition as a presumptive right of co-ownership, meaning a co-owner who wants to force a sale generally has a strong legal footing to do so. But the process is not automatic, and defendants can raise defenses. A co-owner may challenge the plaintiff's ownership stake, argue that a prior written agreement bars partition, or raise equitable claims based on contributions they made toward the property's improvement, mortgage payments, or carrying costs.

The court will often appoint a referee to oversee the accounting process, which determines how the net proceeds are to be divided. This accounting can become its own contested proceeding, particularly when one co-owner has been managing the property, collecting rent, or paying expenses that the other did not share equally. Credits and offsets can significantly affect each party's final distribution.

Timeline is another factor to consider carefully. Partition actions in New York can take anywhere from several months to well over two years depending on the level of dispute, court scheduling, and whether any interim motions are filed. Property values, carrying costs, and the condition of the asset can all shift materially during that period.

Alternatives Worth Exploring First

Before filing a partition action, co-owners may want to consider whether a negotiated resolution is possible. A buyout, in which one party purchases the other's share at an agreed-upon price, avoids the cost and delay of litigation and allows both sides to move on without the uncertainty of a court-ordered sale. Mediation can sometimes facilitate these conversations, particularly when the relationship between co-owners has not completely broken down.

If a buyout is on the table but the parties cannot agree on value, a joint appraisal by a neutral appraiser can sometimes break the deadlock without involving the courts.

That said, when one co-owner is unresponsive, is encumbering the property, or is actively obstructing a sale, a partition action may be the most direct path to a resolution.