New York City Mayor Zohran Mamdani has come under fire after his administration published a searchable database identifying wealthy property owners who could be liable for the city's proposed pied-à-terre tax. Critics say the tool, released by the Department of Finance, effectively "doxes" affluent residents by making their names and addresses publicly searchable, raising fears that it could expose them to harassment or even violence at a time of heightened tension over Mamdani's housing agenda.

The database lets users search individual properties and see the identities of owners whose homes are not their primary residence, the category targeted by the pied-à-terre tax proposal. Opponents, including property owners and housing associations, argue the move is part of a broader clash between Mamdani and the city's wealthy over his rent control and housing policies, and warn that publicising personal details of high-net-worth individuals is "outright dangerous" given recent security concerns in the city.