Mamdani publishes names and addresses of all NYC property owners who could be hit with new pied-à-terre tax

Mayor Zohran Mamdani’s administration has published a searchable database of Big Apple properties that could fall under the state’s new pied-à-terre tax, effectively doxxing thousands of wealthy New Yorkers.

The city’s Department of Finance uploaded the comprehensive list – which purports to cover all unoccupied, non-primary residences in the five boroughs worth north of $1 million – including the full names and addresses of every property owner.

“It’s a reckless and foolish move, especially considering there are potentially thousands of properties on this list that do not qualify as second homes or whose owners will successfully dispute their inclusion,” Council Minority Leader David Carr (R-Staten Island) — whose own home appears on the list — told The Post Monday.

Mayor Zohran Mamdani announced a new tax on luxury second homes in a viral video outside Ken Griffin’s penthouse in April. Mayor Mamdani/X

The move follows a widely panned X post by the mayor in which he put wealthy residents on notice to “check your mailbox when you’re back in the five boroughs, because you’ve got mail,” a warning that notification letters were on their way.

“The best city in the world deserves the best parks, libraries, and schools in the world. That’s only possible when we all pay our fair share,” Mamdani wrote Thursday.

The socialist darling has long touted the policy enacted by Gov. Kathy Hochul and Albany Democrats to tax second homes in the city – though critics have warned it could cause property values to plummet.

Mamdani threatened to raise city property taxes by a staggering 9.5% in February unless he was allowed to “tax the rich” to cover a $12 billion budget gap that was later revised down to $5.4 billion.

City Hall published a database of the wealthy New Yorkers whose properties fall under the new tax. Mayor Mamdani/X

City Hall estimates the pied-à-terre tax would yield $500 million per year for the Big Apple’s budget. 

But Democratic city Comptroller Mark Levine’s office said the real figure would be closer to $340 to $380 million and could diminish over time.

Unsurprisingly, the colossal database of names and addresses included several A-list New Yorkers, including director Woody Allen, longtime Vogue editor Anna Wintour and actress Cynthia Nixon — a loyal Mamdani supporter.

Actress Cynthia Nixon hosting a fundraiser for Mamdani on March 17, 2025. Nixon’s New York City home is on the list of properties that could be hit with the new tax. nstagram / Cynthia Nixon

What is surprising is the document’s sheer size and some of the properties included.

Citywide, The Post counted over 960,000 residences and individuals listed as potentially in line to be hit with Mamdani’s pied-à-terre tax, even though just 31,000 homes were supposed to be subjected to the new levy as he and Hochul initially sold it to the public.

Many of the homes included in the database appeared to be misaligned with a tax aimed at well-heeled residents with multi-million dollar vacation homes, including some two dozen modest homes on Chaffee Avenue in working-class Throggs Neck in the Bronx.

Former Vogue editor Anna Wintour is another bold-faced celebrity name in the pied-à-terre tax database. Getty Images for 2026 Teen Vogue Fest

Director Woody Allen is another famous New Yorker that may be forced to pay the new tax. Bruce Glikas/WireImage

Challenger Drive on Staten Island was another middle-class enclave with dozens of addresses appearing on Mamdani’s list, though it wasn’t clear that they were in fact second homes.

The average home values on Chaffee Avenue and Challenger Drive ranged from mid-$500,000s to the low $800,000s — a far cry from the price tag of your average New York summer residence.

One address appearing on the list is the Breezy Point Shopping Center in Rockaway, Queens, a small outdoor mall containing several shops, which is definitely not a vacation home.

Mamdani speaking at a forum on his new tax proposals with economists Gabriel Zuchman (left) and Joseph Stiglitz on April 15, 2026. Robert Miller for NY Post

The city chalked the public document up to standard protocol for whenever a new tax is enacted, saying the DOF is required to publish a list of potentially affected residences and that not all of the owners in the data drop would get notice letters.

“As per State law, a property roll was released for public inspection,” said a DOF spokesperson. “From this list, DOF will identify properties that may be subject to the new non-primary residence property surcharge.”

But the DOF didn’t say how it came up with the list of hundreds of thousands of residences — or why it published the names of owners — out of more than 1.1 million owner-occupied homes across the Big Apple, only saying it was required to post it under state law.

“All the mayor is doing is tanking the luxury home market in NYC and sending millions of dollars in real estate business to other states. But the upside is Mamdani is a shoo-in for ‘Realtor of the Year’ in Texas and Florida,” Carr railed.

Carr’s Staten Island condo made the list — as well as Councilwoman Gale Brewer, who has lived in her single-family brownstone on the Upper West Side for more than two decades.

“I’ve been living in [my place] 365 days a year since 1994,” said the longtime lawmaker. “So, this whole list must be messed up.”

Steven Fulop, president and CEO of the Partnership for NYC, a nonprofit business advocacy group, called it “a mistake, and a dangerous precedent.”

“Publishing names and addresses singles out people who have done nothing wrong, at a moment when the far-left already treats success itself as something to be punished,” Fulop said.

“Most of the people on that list aren’t billionaires by any stretch – they’re people that believed in NYC, worked hard and bought a second home. All this does is make people feel less safe in their own city, and less welcome in it.”

It’s not the first time Mamdani has caught heat for doxing folks who might be impacted by the new tax.

After Hochul announced the pied-à-terre tax in April, the mayor too a victory lap by filming a video outside Citadel CEO Ken Griffin’s $238 million penthouse on Central Park South.

The political blunder led to harsh blowback from the business community, ticked off that Mamdani was personally attacking Griffin, who employs thousands of people in the city, instead of less sympathetic targets like Russian oligarchs or Saudi elites, who parked their money in high-end city real estate.

The mayor is just getting started in fulfilling his campaign pledge to siphon funds from rich New Yorkers to bankroll his wealth redistribution agenda.

But it turns out even the middle-class isn’t safe from the pricey giveaways on his wishlist, which are being funded by the $23 billion in taxes Mamdani has backed since being sworn in.

He’s also pushing ahead with a months-long pressure campaign for even more new state taxes, including on city property owners, The Post reported last week.

— Additional reporting by Charles Gasparino, Lauren Schram and Greg Carlton