New York City Mayor Zohran Mamdani's office published a searchable database of nearly one million property owners' names and addresses for a tax originally sold as targeting a few thousand wealthy second-home owners, and the list includes many of the mayor's own supporters.
The New York City Department of Finance released the database as part of the rollout of Mamdani's pied-à-terre tax, a levy on non-primary residences valued above $5 million. The tax was initially estimated to affect roughly 10,000 to 13,000 high-end properties. Instead, the published list ballooned to more than 960,000 names and addresses, a figure so far beyond the original scope that it caught even the mayor's allies off guard. Among those named in the database: actress Cynthia Nixon, fashion editor Anna Wintour, director Darren Aronofsky, author Deepak Chopra, and pop star Taylor Swift.
Nixon hosted a fundraiser for Mamdani's campaign. Now her name and home address sit in a searchable public file alongside hundreds of thousands of other New Yorkers, most of whom will never owe a dime under the tax.
The gap between promise and execution is staggering. City Hall estimated the pied-à-terre tax would yield roughly $500 million a year, though Comptroller Mark Levine's office projected a lower figure, between $340 million and $380 million, that could shrink over time. The tax was supposed to land on a narrow slice of luxury second homes. By the time the Department of Finance hit "publish," the database dwarfed every prior estimate. Newsmax reported the list contained over 960,000 property records, compared to the roughly 11,200 properties actually expected to pay the tax.
The errors were not subtle. The New York Post reported that the list included a shopping mall, middle-class homes valued between $500,000 and $800,000, and full-time residents who have no second home at all. The Real Estate Board of New York called the implementation "extraordinarily complicated" and "this flawed," noting that many owners received inaccurate notices.
Councilmember Gale Brewer, a District 6 Democrat, discovered her own home on the list, a property she says she has occupied full-time for more than three decades. She did not hold back.
"I've been living in [my place] 365 days a year since 1994. So, this whole list must be messed up."
Brewer is not a conservative critic looking for a fight with the mayor. She is a fellow Democrat whose primary residence was swept into a database that was supposed to capture only secondary properties. If the list cannot distinguish a full-time home from a luxury pied-à-terre, it is not a tax roll. It is a phone book with a tax label on it.
Republican Council Minority Leader David Carr called the release "reckless and foolish." He labeled Mamdani "realtor of the year" for the state of Texas, a pointed suggestion that the mayor's policies will drive residents out of New York entirely.
Carr laid out the problem in plain terms:
"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."
The criticism was not limited to Republicans. Liberal NYU professor and podcaster Scott Galloway, who found his own name on the list, called the database a form of "doxing", the practice of publishing someone's personal information to expose them to harassment or worse. Galloway estimated that 95 percent of the people on the list will never be subject to the tax. As he told Fox News:
"He's taken a legitimate source of tax revenue, and he's turning it into a wanted poster."
Tech journalist Kara Swisher echoed the concern: "I don't love this. It feels a little bit like doxing. Just tax them and get on with it is my feeling."
Steven Fulop of the Partnership for New York City went further, arguing that the list singles out "people who have done nothing wrong, at a moment when the far-left already treats success itself as something to be punished."
The mayor did not stop at a database. Mamdani posted a video promoting the pied-à-terre tax that specifically called out Citadel founder Ken Griffin's $238 million New York City apartment as an example of wealthy non-residents failing to pay their fair share. Citadel's chief operating officer, Gerald Beeson, responded with an internal email to employees that doubled as a public warning.
Beeson released a list of Griffin's and Citadel's contributions to the city and issued what National Review described as a veiled threat to reconsider a planned $6 billion office development on Park Avenue, a project projected to contribute $4.5 billion to the local economy, generate 6,200 construction jobs, and create 15,200 permanent positions.
"It is shameful that he used Ken's name as the example of those who supposedly aren't carrying their fair share of the burdens associated with New York City's often costly and wasteful spending."
A mayor who set out to squeeze revenue from a handful of ultra-wealthy property owners now risks chasing away a single employer whose planned investment would dwarf the tax's projected annual haul. The math does not favor Mamdani.
The Washington Examiner traced the expansion in detail. In May, the pied-à-terre tax was estimated to affect roughly 10,000 properties. By the time the July tax roll appeared, the number had tripled to more than 31,000. And the broader published database, the one with names and addresses, reached nearly 960,000 entries. That is not a rounding error. That is a tax originally pitched as a scalpel arriving as a dragnet.
The Examiner's columnist, former Georgian counterintelligence officer Emzari Gelashvili, drew on personal family experience with Soviet-era list-based persecution to frame the danger of expanding government classification systems. His warning was direct:
"The category always grows. It has never once shrunk."
Gelashvili added a personal note that cut closer to the bone: "Nobody in 1951 wrote 'destroy this man' beside my grandfather's name. They wrote a category, and the category did the rest." Whether or not the comparison to Soviet tactics strikes every reader as proportionate, the underlying pattern, a narrow tax category that expands far beyond its original scope, is documented in the city's own numbers.
This is hardly the first time the Mamdani administration has faced backlash over policy execution. An immigrant business coalition recently prepared a lawsuit over the mayor's $70 million taxpayer-funded grocery store program, and the administration has drawn criticism across multiple fronts, from public health failures to abandoned campaign pledges in budget negotiations.
The privacy implications of publishing nearly a million names and home addresses in a searchable format are not theoretical. Spencer Pratt, a former candidate for mayor in Los Angeles, framed the list in the harshest terms available:
"This is what commies do. They mark their enemies, call them 'fascists', and that's the bat signal: they know their deranged commie street animals will Luigi them. They never have to explicitly call for violence...violence is just the inherent reflex of the commie. Message receive."
Pratt's language is inflammatory, and his reference to "Luigi", an apparent allusion to a violent act, goes well beyond policy criticism. But the underlying concern he raises about publishing identifiable personal information in a politically charged environment is one that Galloway, Swisher, Fulop, and Carr have all echoed in calmer terms. When a liberal NYU professor and a Republican council leader agree that a government database amounts to a "wanted poster," the mayor has a credibility problem that crosses party lines.
The mayor's office defended the release as a routine, state-mandated property tax roll publication that has occurred for decades. That defense sidesteps the central complaint: a database of 960,000 entries, most of them irrelevant to the tax, is not a targeted policy tool. It is a mass disclosure that swept up an administration already under scrutiny into yet another self-inflicted controversy.
Several open questions remain. The mayor's office has not explained the criteria used to compile the list or addressed why it captured properties so far outside the tax's intended scope. No public response from the administration has addressed the inclusion of primary residences, shopping malls, or middle-class homes. And no one has explained how a tax sold as hitting the wealthiest sliver of New York real estate ended up with a database ninety times larger than the number of properties expected to pay it.
A government that cannot tell the difference between a billionaire's second apartment and a councilwoman's only home has no business publishing either address.