New York Judge Temporarily Halts Zohran Mamdani’s Proposed Pied-a-Terre Tax Plan and Orders Removal of Large Property Database

A New York judge temporarily blocked Mayor Zohran Mamdani’s pied-a-terre tax plan on Monday and ordered City Hall officials to remove a controversial, publicly accessible list that the report says exposed the names, addresses, and property values of more than 900,000 homeowners.

The litigation, as described in the reporting, centered on the city’s effort to create a new tax tied to luxury second homes, with the city making data accessible through a public-facing database. The report characterizes the list as “doxxing” and frames it as part of what it calls the administration’s effort to administer the tax.

According to the report, the judge’s order required city officials to take steps to remove the information from the public domain while the case proceeds. The judge’s action was described as a temporary halt, indicating the court has not yet issued a final ruling on the underlying tax proposal or the legality of the city’s methods.

Mayor Mamdani’s office had been moving ahead with the tax concept and the use of the property database as part of implementation, the report says. The report also asserts that the database had been accessible online and that it included detailed homeowner information, not just ownership totals.

The practical effect of the court order, as described, is that the city would need to change how the information is provided publicly, at least during the pendency of the case. While the report does not specify whether the city may still use the data internally, it says the judge directed the removal of the exposed list from public access.

The case also raises due-process and government-transparency issues, particularly where property-related information is maintained in ways that reach ordinary residents. The reporting frames the judge’s decision as focused on the database’s public exposure as well as the broader tax implementation.

No additional details about the legal claims, the parties, or the judge’s specific findings were included in the information provided for this story, and no official court docket documents were available in the supplied materials. As the case continues, the next step would be further court proceedings on whether the city’s approach to the tax and the database complies with applicable legal requirements.

The temporary order means Mayor Mamdani’s pied-a-terre tax plan remains paused in its current form pending further litigation, while the city faces questions about whether it can continue building or administering the program without maintaining public access to detailed homeowner records.