New York City Enacts Community Opportunity to Purchase Act Under Mayor Mamdani

The law establishes a local right-of-first-offer for tenant groups and nonprofits on certain property sales, a policy model that other cities and federal housing policymakers may now watch closely...

New York City Mayor Zohran Mamdani signed the Community Opportunity to Purchase Act (COPA) into law during the week of November 10, 2026, making it the second piece of legislation he has signed since taking office, according to reporting by the New York Post on November 14, 2026.

The law grants qualifying community groups, tenant organizations, and nonprofit housing entities the right of first offer when a residential property in New York City is listed for sale. Under the mechanism, a seller must notify eligible organizations before completing a transaction with a private buyer, giving those groups a designated period to submit a competing bid.

The version Mamdani signed is a revised form of an earlier bill. Former Mayor Eric Adams vetoed a broader version of the legislation, according to the New York Post report dated November 14, 2026. The City Council subsequently passed a modified text, which Mamdani then signed. The specific amendments made between the vetoed version and the enacted version have not been fully published in a City Council record available as of the date of this article.

Property rights attorneys have noted that right-of-first-offer statutes can face constitutional challenges under the Takings Clause of the Fifth Amendment, which prohibits government from taking private property for public use without just compensation. Whether COPA's specific structure constitutes a regulatory taking is a legal question that has not yet been adjudicated in a New York court as of November 14, 2026. No federal lawsuit had been filed against the law as of the same date, based on a review of federal court dockets in the Southern and Eastern Districts of New York.

San Francisco enacted a similar Community Opportunity to Purchase Act in 2019. That ordinance has faced legal scrutiny but remained in effect as of 2026, providing one precedent for how such laws operate in practice. Washington, D.C., has operated a Tenant Opportunity to Purchase Act since the 1980s. Neither of those laws has been struck down by a federal court, though legal challenges to the New York version could raise distinct arguments depending on how the city implements the notification and bidding process.

The property types covered by New York City's COPA, the minimum building size threshold, and the length of the required offer period are details that would appear in the final enrolled bill text filed with the New York City Council Clerk. That document had not been posted to the Council's public legislation portal in a fully enrolled form as of the publication of this article.

Mamdani, a Democratic Socialist who won the New York City mayoral election in 2025, has identified housing affordability as a central policy priority. His signing of COPA as only the second enacted bill of his administration, as reported by the New York Post on November 14, 2026, is consistent with public statements he made during the campaign. The mayor's office had not issued a formal statement with implementation details as of the publication deadline for this article.

The law's federal relevance centers on two areas. First, if a constitutional challenge reaches the federal courts, it could produce a ruling that affects how other cities design similar statutes. Second, the Department of Housing and Urban Development has previously studied right-of-first-offer frameworks as a tool for preserving affordable housing stock. Whether HUD under the current administration would engage with the New York law is unknown. A HUD spokesperson had not responded to a records request regarding any agency review of COPA as of November 14, 2026.

New York City's real estate market is among the largest in the United States by transaction volume. The Real Property Law of New York, Article 9-B, governs condominium sales, and the interaction between COPA's requirements and existing state property law has not yet been addressed by the New York State Legislature or the state Attorney General's office, based on a review of the Legislature's public bill database as of this date.

What remains unknown is the full enrolled text of the signed law, the specific implementation regulations the city plans to issue, the timeline for those regulations, and whether any property owner or real estate trade association has retained counsel for a potential challenge. The New York City Council Clerk's office, the Mayor's Office of Housing, and the City Law Department are the public records sources that would answer those questions.