Mamdani signs new housing law that could change who gets the first chance to buy NYC buildings

• Community organizations across the five boroughs leverage New York’s new housing law to secure a distinct legal advantage over private investors during residential real estate transactions.

• Mayor Zohran Mamdani signed the Community Opportunity to Purchase Act (COPA) on Tuesday, November 10, 2026, granting qualified nonprofits an exclusive right of first refusal.

• Participating tenant associations and land trusts utilize a structured municipal framework to evaluate properties and start over private buyers before market listings become final.

Mayor Zohran Mamdani signed the Community Opportunity to Purchase Act (COPA) during a public event in Brooklyn on Tuesday, November 10, 2026, establishing New York’s new housing law to give qualified nonprofit organizations and tenant associations the decisive advantage of acquiring residential buildings before private entities enter the open market, ensuring that local families secure permanent residential stability.

Furthermore, municipal officials explained that property owners must notify their intent to sell through the system managed by the Department of Housing Preservation and Development so that authorized community entities receive immediate notification, directly providing local advocates with the institutional head start required to start over private buyers when commercial transactions begin.

How New York’s new housing law grants a decisive advantage

Municipal leaders designed this legislative framework to combat aggressive real estate speculation across high need neighborhoods by giving community groups 145 days to review properties and secure the necessary financing before any private investor can close a deal.

Meanwhile, Mayor Mamdani emphasized that residential buildings should remain places of stability rather than instruments of financial speculation, noting that too many residents watch their homes deteriorate while nonprofit developers utilize their legal priority under COPA to start over private buyers during every stage of the transaction.

Implementation guidelines and building eligibility criteria

• Property classifications: The municipal mandate applies specifically to multi-family residential structures containing 4 or more apartments that exhibit documented physical deterioration or formal regulatory agreements with the city.

• Registry administration: The Department of Housing Preservation and Development maintains strict oversight of authorized community land trusts and housing developers.

• Matching acquisition rights: Qualified groups retain the legal privilege under COPA to start over private buyers by matching external third party offers submitted up to 1 year following an initial sale rejection.

• Long term affordability: Administration officials project that this legislation will advance broader municipal initiatives aimed at preserving permanent housing stability across urban sectors.

Legislative background and how communities start over private buyers

City Council member Carlina Rivera originally sponsored the legislation in 2022 alongside co-sponsors such as Sandy Nurse, creating a policy foundation that survived a previous veto by former Mayor Eric Adams in 2025 to officially establish New York’s new housing law.

Additionally, this comprehensive regulation operates in conjunction with the ambitious Block by Block municipal plan designed to construct 200,000 new affordable homes and preserve another 200,000 units over a decade, confirming that local nonprofit advocates utilizing COPA can successfully build an affordable city under New York’s new housing law.