Buying a Co-op in New York: The Board Package, Approval, and Your Rights

If the apartment you want is a co-op, the purchase works differently from buying a house or a condo, and the difference shapes the whole deal: what you own, who must say yes, how long that can take, and what you can do if the answer is no. This article walks through each step in plain English.

What You Are Actually Buying

When you buy a co-op, the cooperative corporation owns the building. In its 2003 decision in 40 W. 67th St. Corp. v. Pullman, 100 N.Y.2d 147, the New York Court of Appeals described the arrangement before it: the “cooperative owns the building,” and the shareholder held “shares of stock appurtenant to his proprietary lease.” The corporation adopts “a form of proprietary lease to be used for all shareholder-tenants,” and, in the court’s words, “a shareholder-tenant voluntarily agrees to submit to the authority of a cooperative board.”

So you are buying two things together: shares allocated to your apartment and a long-term lease that gives you the right to live there. The building’s rules, the board’s decisions, and the proprietary lease govern much of what you can do with the apartment after closing.

A condo is different. Under New York’s Condominium Act, “Each unit, together with its common interest, shall for all purposes constitute real property” (Real Property Law § 339-g). A condo owner holds the unit “in fee simple absolute” plus a proportionate, undivided interest in the common elements (RPL § 339-e). Any approval requirement or right of first refusal in a condo comes from that building’s declaration and by-laws, which may or may not include one.

One more contrast worth knowing: New York’s Property Condition Disclosure Act does not apply to co-ops. Its definition of “residential real property” expressly excludes “condominium units or cooperative apartments” (RPL § 461). That makes your own review of the building, with your attorney, more important.

The Board Package

After you and the seller sign a contract, you apply to the board. The application, usually called the board package, is how the board evaluates you as a future shareholder. Each building sets its own requirements, and they can be detailed, so ask for the package early and read the instructions closely.

Your attorney’s role at this stage often includes reviewing the contract’s terms about board approval, helping you understand the proprietary lease and house rules, and tracking the deadlines the contract and local law set. In Westchester County, the application itself must disclose the board’s “minimum financial qualifications” or, if it has none, its “preferred minimum financial qualifications,” which can help you judge whether you meet them before you apply.

How Much Discretion the Board Has

Co-op boards have broad discretion, and courts generally respect it. New York applies a business judgment rule to board decisions, drawn from Matter of Levandusky v. One Fifth Ave. Apt. Corp., 75 N.Y.2d 530 (1990). As the Court of Appeals restated the test in Pullman, courts defer to the board “so long as the board acts for the purposes of the cooperative, within the scope of its authority and in good faith.”

In practice, that means a court will often not second-guess a rejection simply because the buyer disagrees with it. The deference is not unlimited. It applies only when the board acts for the cooperative’s purposes, within its authority, and in good faith; anti-discrimination law still applies to boards; and covered boards in New York City and boards in Westchester face local-law deadlines.

New Deadlines in New York City: Local Law 58 of 2026

In 2026, New York City adopted response deadlines for co-op boards. Local Law 58 of 2026 (Int. 1120-B) was vetoed by the Mayor on December 31, 2025, and the City Council overrode the veto on January 29, 2026. The law establishes “timelines for cooperative corporations to approve or deny the sale of cooperative apartments.” Under it, a covered board must:

• acknowledge receipt of application materials within 15 days; and
• state its consent or denial within 45 days after the application is complete, with limited extensions.

The city’s Department of Housing Preservation and Development (HPD) enforces the law, with civil penalties of $1,000 for a first violation, $1,500 for a second, and $2,000 for each later violation.

The law took effect on July 28, 2026 (180 days after enactment) and applies to applications made on or after that date. If a board does not send the acknowledgment within 15 days, the application is deemed complete as of the date the acknowledgment was due. A board may extend the 45-day decision deadline once, by up to 14 days, on notice to the buyer, and, if the board has adopted a summer recess notice, the 15-day acknowledgment deadline is paused during the July–August recess, and the 45-day decision deadline is paused if it would otherwise end during the recess. The law does not cover buildings with fewer than 10 dwelling units, housing development fund companies (HDFCs), or co-ops whose share sales require a governmental housing agency’s approval, so confirm whether your building and your application are covered.

What the NYC law does not do: it does not require a board to explain why it rejected you. A separate City Council bill, Int. No. 774 of 2026, would require boards to give a written statement of their reasons for withholding consent; as of October 2026 it is pending in committee, not law.

Westchester County: Deadlines and Written Reasons

Westchester County also regulates the co-op approval process. Under the county Fair Housing Law, § 700.21-a (as amended effective August 1, 2021), according to the Westchester County Human Rights Commission:

• “Within 15 days of receiving an application, Cooperative Boards must either acknowledge receipt of a completed application,” or notify the applicant of defects and give an opportunity to correct them.
• “Once it has received a completed application, Cooperative Boards have 60 days to approve or reject the application.”
• The rejection notice must contain, among other things, “The reason for the rejection,” and the board must send a copy to the Commission within 15 days.
• Fines are “$1,000 for the first offense,” “$1,500 for the second offense,” and “$2,000 for all subsequent offenses.”

If you are buying in another county, ask your attorney whether any local rule applies; rules and customs vary across the state.

What a Board Cannot Do: Fair-Housing Protections

A board’s discretion stops at discrimination. New York’s Human Rights Law makes it an unlawful discriminatory practice for an owner, lessee, managing agent, or certain others involved in housing to discriminate “because of the race, creed, color, national origin, citizenship or immigration status, sexual orientation, gender identity or expression, military status, sex, age, disability, marital status, status as a victim of domestic violence, lawful source of income or familial status” (Executive Law § 296(5)(a)).

“Lawful source of income” is defined broadly. It includes “child support, alimony, foster care subsidies, income derived from social security, or any form of federal, state, or local public assistance or housing assistance including, but not limited to, section 8 vouchers,” and “any other forms of lawful income” (Executive Law § 292(36)). The Attorney General’s office has said co-op boards can be held accountable under these rules. If you believe a rejection was discriminatory, speak with a lawyer promptly.

Buying From a Sponsor Versus a Resale

Whether the Attorney General’s office is involved depends on who is selling. Under the Martin Act provision for cooperative and condominium interests, General Business Law § 352-e, a public offering of co-op or condo interests requires an offering statement or prospectus filed “with the department of law, prior to such offering.” The AG explains that “Sales of cooperative and condominium units are made pursuant to the terms and conditions of an offering plan,” but when an individual owner rather than the sponsor sells, “the sale is not regulated by the Attorney General.”

The AG’s regulations are organized by type of offering. Newly constructed and vacant cooperatives fall under 13 NYCRR Part 21, and conversions of occupied buildings to co-op ownership fall under Part 18. If you are buying from a sponsor, the offering plan and its amendments are central documents for your attorney to review.

How We Can Help

Rausa Russo Law represents co-op and condo buyers and sellers throughout New York State, from contract negotiation through the board application and closing. For more on the overall process, see our guide to buying a home in New York.

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