Real Estate

Green acres

Paul Greenwood, the former New York Islanders co-owner who has been accused of securities fraud, wants to sell off his vast Westchester estate in North Salem. The estate has been broken up into three properties, and an open house is set for today, says Prudential Holmes & Kennedy listing broker Gloria Marwell. Together, the three properties are listed for $10 million and sit on just under 16 acres.

The main house, which can be purchased by itself for $8 million, sits on 9.1 acres. It’s two stories and more than 9,000 square feet, with five bedrooms and six-plus baths.

Built in 1999, it is filled with obscure and pricey details, like 270-year-old wallpaper in the formal dining room, an 18th-century fireplace mantel and flooring made from 250-year-old “heart of pine” wood. The front entry has lights made of leaded glass from the 1760s. But the best part, at least from a spectator’s point of view, has to be the “foyer centerpiece” — a dramatic, floating spiral staircase.

And when you get to the top of the landing, you’ll see the “collector display cabinetry.” That’s where Greenwood showcased one of his most outrageous purchases — a world-class collection of antique German Teddy bears valued at more than $3 million. As The Post’s Bruce Golding reported last May, a spreadsheet that law enforcement found on his computer lists all 1,348 of his “cuddly companions in loving detail,” noting such specifics as “full-dressed in sailor suit, lavender-tipped mohair coat [and] felt spats.”

It’s been a dramatic fall from grace for Greenwood, who was elected North Salem’s town supervisor in 2007.

Greenwood and business partner Stephen Walsh were busted last February on charges that they used more than $550 million from investors to finance their personal excesses. The Securities and Exchange Commission said what Greenwood and Walsh did was “an egregious fraud of immense proportion.”

More Greenwood property, including a Westchester horse farm and an Upper East Side apartment, are also expected to go on the market soon, sources say.

‘Mean’ business

Alvin Rosenthal — whose “Queen of Mean” sister Leona Helmsley bequeathed him $10 million plus another $12 million to care for her dog, Trouble — is leaving his modest flat on East 83rd Street. Our spies reported moving trucks there this week. Rosenthal is unloading the 1,100-square-foot one-bedroom co-op on the sixth floor, without using a broker, for just under $600,000.

Rosenthal, who kept the $10 million from his deceased sister but turned down Trouble and the $12 million, is now moving, with wife Susan, into a $1.9 million, 1,500-square-foot, two-bedroom co-op with a balcony at 1025 Fifth Ave. The deal on the Upper East Side apartment closed last year with Prudential Douglas Elliman broker Claire Ratusch — who told us, in case you’re wondering, that Trouble is still in Florida and comfortably residing at the Helmsley Sandcastle hotel.

Mad money

The troubled One Madison Park — a 60-story condo building that’s facing multiple lawsuits from creditors, including one of its former brokers — has some good news to report.

Technology entrepreneur/investor Yigal Lichtman closed Tuesday on a $10 million unit at One Madison. The four-bedroom, 4½-bathroom condo is 3,310 square feet on the 42nd floor.

And the developer is considering offers on 15 other units, with a combined value of around $40 million, Prudential Douglas Elliman broker Tamir Shemesh says.

But the building is also wrangling with unhappy buyers who signed contracts in a better market and now want out.