A $70 million duplex, a new tax bill, and a lawsuit filed on a Monday

The Steve Wynn property dispute making headlines right now did not start in a casino. It started in a Ritz Carlton duplex overlooking Central Park that Wynn bought for $70 million in 2012, has been trying to unload for years, and now owes an extra tax on because he lives in Florida. Together with businessman Wilbur Ross, the US commerce secretary in the first Trump administration, Wynn has taken New York to court over Mayor Zohran Mamdani’s pied-à-terre tax, arguing the levy is unconstitutional because it singles out people who do not live there full time.

The suit was filed on a Monday in the Suffolk County branch of the New York Supreme Court. Ross’s wife, Hilary Geary Ross, is also a plaintiff. The couple own a house in Southampton and a Manhattan co-op; Wynn owns the duplex. All of them are Florida residents, and that single fact is the whole case.

Here is my read on it: this is not a story about one rich man’s apartment bill. It is a test of whether a state can write a property tax that applies to you based on where you sleep most nights, and the answer will reset the running cost of trophy real estate in New York for everyone who owns there part time, Wynn included.

What the pied-à-terre tax actually does

The tax was a cornerstone of Mamdani’s 2025 mayoral campaign. The New York State Legislature approved it on May 27, 2026 as part of the 2026-2027 state budget, Governor Hochul signed it into law on May 28, 2026, and it took effect on July 1, 2026. It is aimed at second homes valued above $5 million, and at co-ops and condominiums with an estimated worth above $1 million.

The exemption is the part that triggered the lawsuit. If a pricey New York apartment is your primary residence, the tax does not touch you. If the same apartment is your pied-à-terre and your driver’s licence says Palm Beach, it does. Same building, same square footage, different bill.

From the city’s side, the logic is straightforward revenue work: high-value second homes sit empty for much of the year, their owners vote and pay income tax elsewhere, and the tax base needs money. From the plaintiffs’ side, that is exactly the problem.

Why Wynn has more skin in this than his co-plaintiffs

Since leaving the casino industry in 2018, Wynn has essentially run a high-end residential portfolio, buying, renovating and flipping properties including mansions in South Florida. The Manhattan duplex has been the stubborn piece of that portfolio.

He paid $70 million in 2012. A decade later he listed it at $90 million and found no buyer. That listing was pulled two years after it went up, and the duplex returned to the market in July at the original $70 million. Meanwhile, the estimated annual carrying cost on the apartment runs to about $565,000 before the pied-à-terre levy is added on top.

Item	Figure
Purchase price (2012)	$70 million
Asking price a decade later	$90 million (no sale)
Current asking price (relisted in July)	$70 million
Estimated annual carrying costs	~$565,000, excluding the new tax

Put those numbers side by side and the behaviour makes sense. An asset that has not appreciated in thirteen years, costs more than half a million dollars a year to hold, and just picked up a new recurring tax is an asset you want out of. When the duplex came back on the market in July, some reporting framed the tax as the thing that could finally make Wynn a motivated seller, particularly given that his politics sit a long way from the mayor’s.

The constitutional argument, in plain terms

The legal pitch in this casino mogul legal fight is narrower than “we don’t like paying this.” The plaintiffs argue the state dressed a real property tax up as something else to escape the constitutional limits that apply to real property taxes.

The complaint puts it this way: “The Legislature cannot determine the constitutional character of a tax by fiat; the substance of the charge, and not the label attached by the Legislature, determines its nature for constitutional purposes.” It goes on: “A levy triggered by the ownership of real property, measured by the value of that property, and administered through the real property tax system is unquestionably a tax on real estate regardless of the label the Legislature assigns to it.”

Alongside that, the plaintiffs argue nonresidents are being deliberately treated worse than residents, and they claim lawmakers never hid it. “State lawmakers have made no secret that singling out nonresidents for disparate treatment was precisely the point of the PAT Tax,” the filing says. They also make an economic argument: part time owners of expensive New York real estate already pay property taxes while using very little in the way of municipal services, so they are net contributors rather than freeloaders.

Two threads, then. One is technical, about labels and tax mechanics. The other is about equal treatment of people based on residency. Courts tend to find the technical argument easier to rule on, which is probably why it leads the filing.

What this means for people who follow gaming industry figures

Three practical takeaways, and none of them involve Wynn Resorts’ balance sheet.

• This is personal, not corporate. Wynn has had no operating role at the company he founded since 2018. Whatever the court decides affects his own tax bill and his own real estate, not the operator’s licences, properties or results. Treat this as Steve Wynn news, not Wynn Resorts news.
• The second act is the real story. A decade ago you tracked Wynn through casino floors and development budgets. Now you track him through listings, carrying costs and tax code. The $565,000-a-year duplex tells you more about his current business than any gaming headline will.
• The ruling reaches far beyond one apartment. Plenty of gaming industry figures are Nevada or Florida residents who keep property in New York for the same reasons anyone does. If the courts uphold the Wynn pied-à-terre challenge, the tax loses its teeth statewide. If they do not, residency becomes a line item in every one of those portfolios, and some of those owners will do what Wynn is already doing and sell.

Worth remembering what a lawsuit is and is not. Filing a complaint is an argument, not a finding. Nothing in the suit has been tested yet, no court has ruled the tax invalid, and the levy is in force while this plays out. Anyone reading the filing’s confident language as a result is getting ahead of the process.

Common questions about the Wynn pied-à-terre case

Who is suing New York over the pied-à-terre tax?

Wilbur Ross, his wife Hilary Geary Ross, and Steve Wynn, the founder of Wynn Resorts. All are Florida residents who own New York property. The case was filed in the Suffolk County branch of the New York Supreme Court.

What properties are covered by the tax?

Second homes valued above $5 million, plus co-ops and condominiums with an estimated worth above $1 million. Properties that are the owner’s primary residence are not covered.

Why does Wynn’s Manhattan duplex keep appearing in coverage?

Because the numbers are unusually stark. He bought it for $70 million in 2012, failed to sell at $90 million, relisted at $70 million in July, and carries it at roughly $565,000 a year before the new tax.

Does any of this affect Wynn Resorts?

No. This is a private property and tax dispute involving Wynn as an individual. He has not been involved in running the casino company since 2018.