Appeals court clears Mamdani's pied-à-terre tax: up to 11,200 homes, $380M to $500M a year

A state appeals court on Wednesday reversed a Staten Island ruling that had given property owners temporary relief from New York City's new pied-à-terre surcharge, and dismissed their lawsuit, ABC7 New York and Gothamist reported. The Real Deal carried the same outcome. The city can keep collecting while other cases proceed.

Why the owners lost

The ground was standing, not the merits. Gothamist reported the court found the owners had not shown a concrete injury, and that receiving a tax notice or appearing on a public list of possibly affected properties was not enough. The court did not decide whether the city followed every required procedure. Randy Mastro, a lawyer for the challengers, told ABC7 the court "took the procedural offramp of standing."

So this is a win on a technicality, and the city's lawyers know it. The owners could return with plaintiffs who can show actual harm, for example someone who has been billed.

The numbers behind it

• Homes in scope: about 11,200 properties could be subject to the tax, according to an earlier estimate by Comptroller Mark Levine, as Gothamist reported.
• Exemptions: the Department of Finance has granted more than 8,800 exemption requests, per Gothamist.
• Revenue: Mayor Zohran Mamdani has said the tax will raise $500 million a year. Levine estimated up to $380 million, per Gothamist, which noted the mayor's figure is in question.
• Threshold: Mamdani describes the surcharge as applying to second homes worth more than $5 million, per ABC7.

Put the two estimates side by side and the gap is at least $120 million a year. The exemption count matters just as much: if more than 8,800 of roughly 11,200 flagged homes have already been exempted, the taxable pool may be far smaller than the original list suggests. We could not confirm from these reports how many properties will actually be billed, so treat any revenue figure as unsettled.

What is still pending

Two other lawsuits remain, according to ABC7. One argues the law breaks state constitutional limits on how much the city can collect in real estate taxes each year. The other argues the tax is discriminatory under the U.S. Constitution because it applies only to owners who live elsewhere. Mastro said a court will rule on the surcharge's constitutionality "next month." No date was given. If either case succeeds, the tax could be invalidated.

The path here was messy. In August a Staten Island judge paused the rollout and an appellate judge lifted the pause days later, per CNBC. In September the same Staten Island court ordered the city to redo its notices. Reports differ on some details of that sequence, and none of the pieces we read said whether the redone notices have gone out.

Who it hits

The direct payers are owners of high-end second homes who live outside the city. Brokers and developers of luxury condos are the second group: a tax that stays in force, and may or may not survive December, is a pricing variable for buyers deciding on a purchase now. A buyer under contract has to price in both outcomes.

For everyone else the effect is indirect. If the revenue arrives, it is budget money for the city. If the constitutional cases succeed, the city would have to plan without it. Housing and rates are tied together as always: see our real estate coverage and the 10-year Treasury chart for the rate side of luxury purchases.

Sources: ABC7 New York, Gothamist, The Real Deal, CNBC. Court and filing details are as reported by those outlets; we did not review the court order itself. This is news information, not legal or investment advice.