Mayor Zohran Mamdani signed a law giving vetted nonprofits first crack at distressed New York rental buildings, forcing many landlords through a lengthy preference process before any open-market sale.

At a Brooklyn news conference outside a Cypress Hills housing development, Mayor Zohran Mamdani put his signature on the Community Opportunity to Purchase Act, known as COPA, giving qualified nonprofits a formal head start on eligible residential properties across the five boroughs.

The measure, which takes effect one year from the Tuesday signing, applies to roughly 2,100 primarily rent-stabilized buildings that carry outstanding housing code violations. Landlords of those buildings must notify the city’s Department of Housing Preservation and Development before listing on the open market, then wait while nonprofits get exclusive windows to bid and match offers.

The New York Post reported that the City Council had quietly resurrected a watered-down version of the bill last month and passed it with a veto-proof 38-9 majority, backed by progressives and Council Speaker Julie Menin. Even without the mayor’s pen, the bill was headed to become law. Mamdani signed it anyway.

It is only the second bill he has signed in the 11 months since taking office. More than 100 other measures have become law after he returned them unsigned and let the four-week clock run out.

Owners face layered delays before they can sell freely

Under COPA, landlords of covered buildings cannot simply put a property on the market. They must first alert the housing department. Qualified nonprofits then receive a 20-day window to express interest and as many as 70 days to submit an official first offer.

Owners are not forced to accept that opening bid. They may still negotiate with an outside buyer. But once terms are set, nonprofits get another 15 days to match. If a qualified nonprofit matches, the landlord must sell to the nonprofit.

Buildings with five or fewer units are exempt. Some real estate groups eventually offered buy-in after lawmakers tweaked the bill in recent weeks. The core structure remains: government-vetted nonprofits receive statutory priority that ordinary private buyers do not.

Mamdani framed the signing as a milestone for community groups. Speaking to reporters at the Brooklyn event, he cast the law as historic relief for vetted organizations shut out of open sales.

Mayor Zohran Mamdani said:

"I am so proud today to sign COPA into law, a historic piece of legislation that will provide vetted community organizations with the right of first opportunity to make an offer on eligible buildings before they go to the open market,"

City Council member Sandy Nurse, a Brooklyn Democrat and longtime backer of the idea, called the finished product the biggest program of its kind in the country and recited the bill’s long path through City Hall.

Sandy Nurse said the compromise would still be:

"the largest opportunity to purchase program in the country."

She also laid out the legislative slog that produced it.

Nurse told the crowd:

"Six years, six years, four introductions, four hearings, three mayors, two times it was passed, one time it was vetoed, that is the very short history of the Community Opportunity to Purchase Act,"

That history includes an earlier veto of a prior version. Last month’s revival produced a narrowed bill that still cleared the Council by a wide margin and now carries the mayor’s signature.

Progressive priorities clear the bar while other bills wait

Mamdani’s selective use of the signing pen fits a familiar progressive pattern in New York politics, where housing policy often expands nonprofit and bureaucratic leverage over private owners. The same progressive lane has produced sharp internal fights, including cases where Pelosi faulted Mamdani over foreign-policy positions that split Democrats.

COPA does not seize buildings outright. It does reorder the sales process. A landlord facing code violations on a rent-stabilized property must slow down, notify the city, open the door to nonprofit bidders, and, if those bidders later match a private deal, complete the sale to the nonprofit. Time, leverage, and optionality shift away from the owner and toward organizations the city has already screened.

Supporters present that shift as tenant protection and community stability. Critics of this model see something else: a political preference for nonprofit buyers, layered procedural delay, and a city government inserting itself between a private seller and the open market. The law’s own design makes the preference plain. Nonprofits get first opportunity, then a match right that can compel the sale.

New York voters have watched related progressive fights play out beyond housing, from left-wing primary battles to street protests. One recent flashpoint involved a Mamdani-backed socialist nominee arrested at a demonstration near the United Nations, another marker of how far the city’s activist wing is willing to push.

Two thousand buildings, one preferred class of buyer

Officials put the affected inventory at about 2,100 properties citywide. That is a large enough pool to matter in a tight housing market, yet narrow enough that the rules hit a defined slice of owners, those with primarily rent-stabilized stock and open violations, while sparing the smallest landlords.

The practical effect is a two-track sales system. Ordinary buyers compete in the open market. Vetted nonprofits receive statutory notice, exclusive early windows, and a final match right that can close out a private deal. The city, through HPD, becomes the switchboard for that process.

Whether nonprofits can finance and close at scale remains an open operational question the signing event did not answer. What the law does answer is who gets the first look and who must wait. Private capital arrives second. Politically favored community organizations arrive first.

That ordering matches the broader left-wing instinct now visible in Democratic faction fights nationwide, including the hard-left revolt captured when a DSA Maoist caucus rejected Ocasio-Cortez as insufficiently pure. COPA is the municipal version of the same impulse: move assets and leverage toward ideologically aligned institutions and away from unfettered private exchange.

New York’s statewide Democratic brand is already under strain from voters and celebrities alike. Actress Debra Messing’s decision to snub Hochul and back a Republican for governor underscored how even cultural loyalists have soured on the party’s governing record in the state. Housing rules that complicate private sales will not ease that distrust among owners and taxpayers who pay the carrying costs while the clock runs.

Signature politics, delayed consequences

Because COPA does not take effect for a full year, the immediate press conference glow comes long before the first mandatory notice, the first 70-day offer window, or the first forced match. Landlords and buyers will learn the real friction only when deals start hitting the new gauntlet.

Mamdani chose to own the bill rather than let it become law by inaction. He has let more than 100 other measures pass without his signature. On this one, the nonprofit preference regime years in the making, he stepped forward, claimed credit, and called it historic.

The Council’s 38-9 vote made the outcome nearly certain. The mayor’s signature made the political statement unmistakable. Distressed rent-stabilized buildings with violations will no longer move on a normal private timeline. They will move on a timeline built for nonprofits the city has already approved.

Property owners can still say no to a weak first offer. They cannot escape the process, the notice rules, or the match right that can compel a sale once a nonprofit meets the outside price. That is not a free market with equal bidders. It is a managed queue with a preferred class at the front.

When City Hall revises the sales line so political favorites go first, working owners and ordinary buyers should assume the next “historic” bill will tighten the screws again.