Staff Reports
New York City’s Department of Finance quietly put a supplemental market‑value roll online tied to the new pied‑à‑terre surcharge, and critics say the way it was posted effectively “doxxed” residents. The roll — published as a preliminary, public‑inspection file — included owner names and addresses in a downloadable format. The city says the list is a required first step and only a draft; opponents call it reckless and dangerous for privacy, safety, and the real‑estate market.
What the City Posted — and What It Says
The Department of Finance published the supplemental roll on July 24, 2026 and made it available for public inspection through the end of the year. The DOF describes the file as a preliminary tool that “includes, but is not limited to, those properties that may be subject to” the non‑primary residence surcharge. The agency also points people to online tools for exemption applications, an appeal process, and guidance on eligibility. In plain English: the roll is meant to start a review, not to be a final tax hit list — but the damage depends on how the city packaged the data.
Why Critics Call It Doxxing
The controversy is simple: the roll put names, mailing addresses, and flags about non‑primary status in a format anyone can download and search. That combination is what people mean by “doxxing.” Council Minority Leader David Carr called the move “reckless and foolish,” and Steven Fulop, President & CEO of the Partnership for New York City, said publishing names and addresses “singles out people who have done nothing wrong.” The safety and privacy risks are real, especially when the file can be exported in bulk.
Clashing Counts and Confusion
How many properties were exposed depends on how you slice the data. Filtered analyses put the likely in‑scope properties at roughly 31,000 based on the surcharge’s value thresholds. Other counts from the raw downloads have ballooned into the hundreds of thousands because the supplemental roll is broad and includes building‑level records, unit records, and items tagged for review. That technical mess helps explain why a policy meant to raise revenue has turned into a privacy and accuracy fiasco.
Tax Politics, Revenue Hype, and Market Consequences
The administration has used a headline number of about $500 million a year for the surcharge, but independent analysis from the city comptroller shows a lower range after people react, apply for exemptions, or appeal. The real worry here is behavioral: wealthy buyers and second‑home owners pay attention. If the city makes people feel unsafe or unwelcome, buyers will look to other states. That’s not just theory — it’s a predictable market response. Mamdani may cheer the revenue pitch today, but the real cost could be lower tax take, weaker property values, and lost jobs in real estate and construction.
Bottom Line: Fix the Process, Not the People
New York needs revenue, but blowing past privacy and accuracy for a political win is a sloppy way to balance a budget. Mayor Zohran Mamdani’s DOF should tighten the roll, redact sensitive owner fields where appropriate, and publish a clear timeline for formal notices, exemption deadlines, and appeals. Citizens deserve a city that enforces its laws without turning a public spreadsheet into a public safety problem. If this administration wants to be bold, fine — but bold shouldn’t mean careless. The ball is in the mayor’s court: clean up the data, protect New Yorkers, and stop acting like leaking a list is modern governance.
