A New York judge has issued a temporary halt on Mayor Zohran Mamdani’s efforts to implement a new tax targeting luxury second homes. The decision requires City Hall to remove a contentious list displaying the names, addresses, and property values of over 900,000 homeowners in New York City.
Judge Wayne Ozzi’s order prevents the Mamdani administration from advancing the rollout based on the disputed property listings or mailed notices. The city is also barred from imposing, assessing, or collecting the surcharge without first making individualized determinations and providing required notices under state tax law.
Attorney Randy Mastro criticized the administration’s handling of the surcharge aimed at second homes valued over $5 million. “The city screwed this up,” Mastro declared in court, urging a reset of the process. Mastro argued that officials should have confirmed non-primary residence status before notifying homeowners.
The Mamdani administration published a supplementary property roll, affecting numerous properties and sending notices that forced residents to prove their primary residence status. Mastro contended that this burden should not fall on homeowners.
“The city is to bear the burden,” Mastro insisted, highlighting the administration’s failure to use available data to properly identify qualifying properties.
Mastro criticized the disclosure of property owners’ information, saying it led to public outcry and confusion. Outside court, he emphasized the ruling as a positive outcome for all New York City homeowners.
The lawsuit, filed by three homeowners, does not challenge the legality of the surcharge but targets the implementation process. Plaintiffs claim the city misidentified their primary residences as subject to the surcharge and failed in required determinations before mailing notices.
One plaintiff, Simon Hedley, eventually secured an exemption by providing tax details, showcasing the city’s ability to make determinations independently. Mastro questioned whether the city’s actions were due to negligence or laziness.
The city defended its approach, arguing that pausing the process would hinder taxpayers seeking exemptions. Attorney Steven Banks emphasized maintaining the status quo and giving taxpayers time to navigate exemptions.
Sparks flew in court as lawyers debated the rollout’s impact. Mastro branded the notices “terrorizing,” while Banks refuted the term as offensive, given Mamdani’s standing as the city’s first Muslim mayor. Banks noted that the rollout followed legal provisions.
Mastro clarified that he was referencing homeowners’ perceptions, who viewed the notices as a threat. He highlighted the widespread concern among New Yorkers over the city’s execution of the tax.
The judge found the notices caused irreparable harm and stressed that the city’s initial assessment obligation remains. Although he couldn’t reverse sent notices, he aimed to prevent further errors. Ozzi underscored the plaintiffs’ potential for success given the city’s oversights.
In response to the ruling, Mamdani’s administration expressed intent to appeal. Mayoral spokesperson Matt Rauschenbach affirmed confidence in the surcharge’s fairness and effectiveness, stating it compels wealthy second-home owners to contribute their fair share.
The mayor himself reaffirmed support for the city’s actions and the surcharge, emphasizing its potential to fund city services like improved streets and schools. Mamdani denied regrets over the rollout, acknowledging lingering questions with any new tax.
The legal proceedings are advancing rapidly. The defense has been ordered to submit its response by Aug. 24, with plaintiffs’ replies due Aug. 27. Oral arguments on the case’s merits are scheduled for Aug. 31.

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