A four-judge state appeals panel unanimously reversed the lower-court ruling that ordered the city to scrap its rollout and start over. That means Mamdani’s administration can keep moving toward sending out the first tax bills.

The decision is a significant win for Mamdani’s “tax the rich” agenda, but it is not the last word. Two separate constitutional challenges to the tax are still pending.

New York City Patch reports that the Appellate Division’s Second Department ruled the homeowners challenging the rollout lacked legal standing because they had not shown that the city’s implementation directly harmed them.

The panel also pointed to the exemption process written into state law. In the judges’ view, lawmakers plainly anticipated that some initial notices would reach people who could later prove the property was their primary residence.

That reasoning overturned Staten Island Supreme Court Justice Wayne Ozzi’s September order, which said the city had to do more work before classifying properties and mailing notices. The Department of Finance is now preparing bills ahead of a November 15 mailing target.

Local television coverage captured the ruling as the news broke Wednesday afternoon:

The surcharge applies to non-primary New York City residences at the top end of the market. One- to three-family homes face the tax at $5 million or more, while the threshold for condominiums and co-ops is $1 million.

In its original announcement, the New York City Mayor’s Office claimed the levy would produce roughly $500 million per year. Mamdani and Gov. Kathy Hochul sold it as a way to make wealthy out-of-city owners cover more of the city’s spending.

The administration singled out ultra-expensive properties used as second homes or wealth-storage vehicles. It presented the tax as a clean answer to New York City’s budget gap and a way to protect public services without broadly raising taxes on working residents.

The city’s own announcement put the measure at the center of Mamdani’s progressive fiscal program, making today’s appellate ruling much more than a technical courtroom dispute.

But the rollout quickly showed how messy that promise could become.

NY1 documented complaints from longtime New Yorkers who received letters telling them to prove their homes were primary residences. One Brooklyn homeowner said he had lived in the same property since 1973, with his daughter and grandchildren living upstairs, yet he still received a notice.

That is the central fairness problem the lower court tried to address: the government appeared to cast a wide net first and force property owners to clear themselves afterward. The appeals court has now decided the exemption process was enough to defeat this particular challenge.

The first national breaking-news reports emphasized how directly the ruling revives Mamdani’s tax push:

The economic question is still real. New York depends heavily on a relatively small number of high earners, and policies that encourage them to shift homes, businesses or tax residency can have consequences far beyond the luxury housing market.

Mamdani was also on television Wednesday claiming voters want economic “change they can feel in their wallets.” His courtroom win gives him more room to argue that this tax is part of that agenda.

City & State New York reported that Mamdani doubled down after the September ruling, insisting the city needed the projected revenue and portraying the lawsuits as resistance from people able to afford multimillion-dollar second homes.

Yet the September case focused on implementation, not the broader political argument over whether wealthy owners should pay more. Homeowners argued that the Department of Finance had not adequately determined who actually owed the tax before publishing lists and sending notices.

Wednesday’s appellate ruling removes that immediate obstacle. It does not prove the rollout was careful, and it does not settle whether the surcharge itself survives the constitutional lawsuits still moving through the courts.

For now, Mamdani has the legal opening he wanted. The bills can move forward, the tax fight enters a more serious phase, and New Yorkers are about to find out whether his signature class-war policy delivers the revenue he promised—or the economic blowback his critics predicted.

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