New York City’s New Co-op Transparency Law: What Buyers and Sellers Need to Know

For decades, buying or selling a cooperative apartment in New York City has come with a frustrating unknown: how long will the board take to decide? Cooperative boards and their managing agents have traditionally had wide latitude over the review process, and that discretion has often translated into open-ended delays. A new city law aims to change that.

In January 2026, the New York City Council enacted Introduction 1120-B, known as the Co-op Transparency Law, through an override of a mayoral veto. The law took effect on July 28, 2026, giving cooperative boards roughly six months to update their internal procedures before the new deadlines became binding.

What the law requires

The law applies to cooperative buildings with ten or more residential units. Condominiums, HDFCs, and government-supervised co-ops fall outside its scope. For covered buildings, the law sets up two clear timeframes:

• Acknowledgment period. Once a purchase application is submitted, the board or managing agent has 15 days to notify the applicant whether the submission is considered complete.
• Decision period. Once an application is deemed complete, the board has 45 days to approve or deny the sale.

Boards retain the right to request additional information at any point, but the 45-day clock only begins once the application package is officially complete. Missing a deadline does not result in automatic approval of the applicant, so buyers should not assume a lapsed timeline resolves in their favor without further action.

Why this matters for buyers and sellers

Cooperative transactions have historically carried financial risks tied directly to delay. A slow-moving board review can mean extended carrying costs for a seller, rate lock extension fees for a buyer’s lender, and a closing date that keeps slipping further out. Because boards previously operated without a fixed clock, there was little practical recourse for parties stuck waiting on a decision.

By putting mandatory timelines and written notice requirements in place, the new law does not strip boards of their substantive authority to approve or reject an applicant. What it does is create structure and accountability around the process itself, so buyers, sellers, and their attorneys have a realistic sense of when to expect a response.

What this means for your transaction

If you are preparing to buy or sell a co-op in New York City, this law changes how your transaction timeline should be planned. Application packages need to be complete and well-organized from the outset, since the clock does not start running until a board deems a submission finished. Sellers and their attorneys should also build the new deadlines into contract negotiations and closing schedules rather than relying on the informal estimates common before the law took effect.

Board approval has always been one of the more unpredictable parts of a New York City co-op purchase. This law does not eliminate that step, but it gives every party a clearer framework for what to expect and when.

If you are navigating a cooperative purchase or sale in New York City, our firm can help you prepare a complete application, anticipate board requirements, and keep your transaction moving under the new timelines. Our New York real estate lawyers at Yeung & Associates, PLLC represents buyers and sellers of co-ops, condominiums, and other residential properties throughout Brooklyn and the five boroughs, and we would be glad to speak with you about your closing.

Source:

legistar.council.nyc.gov/LegislationDetail.aspx?ID=7028966&GUID=47E050EC-31FA-4647-93A6-90F6CADD5BA0&Options=ID%7CText%7C&Search=int.+1120