New York City has published a searchable database of roughly 960,000 property records identifying owners who could be hit by the state's first pied-à-terre tax — and the list reads like a who's who of the art world.

The database, posted on 27 July 2026 by Mayor Zohran Mamdani's administration, names gallery owners, collectors and dealers across Manhattan's most expensive blocks. A pied-à-terre (literally "foot on the ground" in French) is a second home used occasionally rather than as a primary residence. The new tax places a surcharge on wealthy owners whose New York City properties are not their main homes, with rates ranging from 0.8 to 6.5 percent depending on property type and value tier. (NY Post, Artnet News)

Among those named directly in the rolls: David Zwirner, whose East Village home carries a city-assigned value of US$10.6 million; Arne Glimcher and Marc Glimcher of Pace Gallery; painter and filmmaker Julian Schnabel; art adviser Allan Schwartzman, whose Flatiron apartment is valued at US$1.42 million; and Mitchell Rales, the Smithsonian board chair and co-founder of Danaher Corporation. Collector Adam Lindemann's Upper East Side home is valued at US$41 million. (Artnet News)

Larry Gagosian's mansion on East 75th Street appears under the holding company Sugar Shack LLC, with a city-assigned value of US$63.3 million. Other major collectors — including hedge-fund manager Steve Cohen (net worth roughly US$22 billion, per Bloomberg's billionaire index), Leon Black and Len Blavatnik — were linked to properties through limited liability companies rather than personal names. (Artnet News)

Not everyone on the list will actually pay. A gallery spokesperson confirmed that Zwirner's East Village property is his primary residence, which would exempt it from the surcharge. The first phase of the tax, covering 1 July 2026 through 30 June 2027, applies to one- to three-family homes valued at US$5 million or more and condos and co-ops valued at US$1 million or more. (Day Pitney, Artnet News)

Mamdani and Governor Kathy Hochul jointly announced the tax in April 2026. Hochul estimated it would generate US$500 million in revenue from approximately 13,000 second homes with market values of at least US$5 million. The New York City Comptroller's office published a fiscal note in April that flagged uncertainties in those revenue projections, drawing on earlier pied-à-terre proposals to model the range. (NYC.gov, NYC Comptroller)

The tax became effective on 1 July 2026. Property owners were notified by mail this month. Owners of family homes and condos have until 21 August to apply for an exemption; cooperative-apartment owners have until 24 August. Formal bills are scheduled to go out in November. (Day Pitney, Artnet News)

For the city's gallery owners and collectors, the next few weeks are a paperwork deadline. For Mamdani, the database is the opening move in a plan to close the city's budget gap by taxing homes that sit empty for much of the year.