Mamdani Publishes NYC Property Owners' Names and Addresses for Pied-à-Terre Tax

New York City Mayor Zohran Mamdani's administration has published a searchable database of property owners who could be hit by the city's new pied-à-terre tax, including their full names and home addresses. The move is drawing accusations of doxxing from critics and raising fresh questions about the city's luxury real estate market.

What was published

According to reporting, 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.

The database includes over 960,000 residences and individuals potentially affected by the tax, far exceeding the 31,000 homes initially expected to be impacted by the levy.

The Department of Finance said the roll includes, but is not limited to, those properties that may be subject to the surcharge.

How the tax works

The new pied-à-terre tax covers condos and co-ops valued at $1 million or more and one- to three-family homes valued above $5 million. The city cautioned that being on the list does not guarantee a property will be taxed, as owners may qualify for exemptions if the residence is occupied by the owner, a tenant, or an immediate family member.

City Hall estimates the tax will generate approximately $500 million annually, although City Comptroller Mark Levine's office projects a lower return of $340 million to $380 million, with collections potentially decreasing over time.

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Political backlash

Council Minority Leader David Carr, a Republican from Staten Island whose own home appears on the list, called it a reckless and foolish move, noting there are potentially thousands of properties on the list that do not qualify as second homes or whose owners will successfully dispute their inclusion.

Critics have raised concerns about the accuracy of the list, as it includes properties like a shopping center and modest homes in working-class neighborhoods that may not align with the intended targets of the tax on luxury second homes. Critics also contend the tax could depress luxury property values and have questioned the city's decision to publish owners' personal information.

Market implications

The tax and the public list could accelerate selling pressure in NYC's high-end condo and co-op market, particularly for out-of-state owners who use the properties part-time. Watch for spillover into luxury brokerages, mortgage originators with NYC exposure, and REITs holding Manhattan residential inventory.

A softer luxury market could also weigh on transaction volume for title insurers and high-end retail located near affected buildings.

Options market and stocks to watch

Traders may want to keep an eye on names with direct NYC luxury real estate or high-net-worth client exposure:

• DOUG: Douglas Elliman is a major NYC luxury broker; watch for commentary on listing volume and pricing.
• COMP: Compass has significant Manhattan market share and could see mix shifts if high-end sellers rush to exit.
• VNO: Vornado Realty Trust is a bellwether for NYC real estate sentiment even on the commercial side.
• SLG: SL Green is another NYC-heavy REIT that tends to trade with local policy risk.
• JPM: Watch large jumbo mortgage lenders for any signs of tightening on NYC second-home loans.

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