Archive · 30 Sep 2026
Mamdani’s Pied-à-Terre Tax Faces a Rollout Legal Challenge
New York City created a tax on very expensive homes that owners do not use as their main homes.
The tax is meant to raise money for the city’s affordability plans.
City officials sent letters to about 17,000 homeowners who might have to pay.
They also published a much larger list of about 900,000 properties and owners.
Some people said their names appeared even though the properties were their primary homes.
A judge said the city handled the notices and list improperly and ordered changes.
The judge did not decide whether the tax itself is legal under the Constitution.
The city is appealing, while other homeowners are separately challenging the tax in court.
A Staten Island judge ordered New York City to cancel notices sent to about 17,000 potentially affected homeowners and remove a broader property list.
The judge did not decide whether the pied-à-terre tax is constitutional, focusing instead on the city’s identification and notification process.
The surcharge applies to expensive New York City residences that are not owners’ primary homes, with rates ranging from 0.8% to 1.3%.
The city expects the tax to raise at least $500 million annually, while separate lawsuits argue that the surcharge violates state and federal law.
Mayor Zohran Mamdani’s administration plans to appeal the ruling and says it has implemented the surcharge fairly and legally.
- Who
- New York City Mayor Zohran Mamdani’s administration, the Department of Finance, affected homeowners, and property owners challenging the surcharge.
- What
- A judge ordered the city to cancel potentially misleading tax notices and remove a broad property list connected to the pied-à-terre surcharge.
- When
- The tax took effect on July 1, 2026; notices were mailed beginning July 23, and a judge temporarily blocked further implementation on August 10 before an appellate judge allowed it to continue.
- Where
- New York City, with the rollout case heard by a Staten Island judge and constitutional cases filed in Suffolk County.
- Why
- The city seeks revenue for its affordability agenda, while homeowners dispute the rollout process and separately argue that the tax itself is unconstitutional.
City Administration and Tax Supporters
Homeowners and Tax Opponents
Rollout and notices
City Administration and Tax Supporters
The administration says the surcharge is being implemented fairly, efficiently, and in compliance with the law, and intends to seek a stay of the ruling.
Homeowners and Tax Opponents
Homeowners argued that the broad property list and potentially inaccurate notices caused confusion, exposed personal information, and needlessly harmed people whose properties were primary residences.
How taxable properties should be identified
City Administration and Tax Supporters
The city created a notification and exemption process and hired about two dozen additional staffers to handle questions and appeals.
Homeowners and Tax Opponents
Judge Wayne M. Ozzi criticized the city for making homeowners prove primary-residence status despite the Department of Finance having access to tax information that could help identify taxable properties.
Whether the surcharge should survive
City Administration and Tax Supporters
The city and Mamdani’s administration support the tax as a source of at least $500 million in annual revenue for the affordability agenda and plan to defend it in court.
Homeowners and Tax Opponents
Property owners including Wilbur Ross Jr., Hilary Ross, and Stephen Wynn argue in separate lawsuits that the surcharge violates state and federal constitutional protections.
- Affected notices
- About 17,000 homeowners received letters saying they could potentially be subject to the surcharge.
- Published property list
- The city released information on about 900,000 properties, including homeowner names and property values.
- Tax rates
- The surcharge starts at 0.8% and rises to 1.3% for properties valued at $25 million or more.
- Initial thresholds
- During the first two years, certain condominiums and cooperative apartments valued at $1 million or more are covered; other properties generally have a $5 million threshold.
- Expected revenue
- New York City expects the measure to raise at least $500 million annually.
- Effective period
- The law took effect July 1, 2026, and is scheduled to remain in place through June 30, 2031, unless extended.
- Current legal status
- The city is appealing the rollout ruling, while separate lawsuits challenge the tax’s constitutionality.