Joe Jonas investigates NoMad; Judge Judy buys high above the Upper East Side; DJ Tiesto takes a Chelsea co-op for a spin; Walker Tower seeks a downtown sales record with long-awaited penthouse.

Pop heartthrob Joe Jonas recently viewed a penthouse pad at 21 East 22nd Street. The two-bedroom duplex condo that the 24-year-old singer and girlfriend Blanda Eggenschwiler toured has high ceilings and a private outdoor terrace as well as a communal roof deck; the condo, located in the increasingly hot Flatiron neighborhood–Chelsea Clinton lives nearby–is on the rental market for $8,500 a month (NYPost).

Lauren Weisberger, author of The Devil Wears Prada, just listed her 1,994 square-foot Chelsea apartment for $4.995 million–nearly twice what she and her husband, writer Michael Cohen, paid for it in 2010. The pair plan to move to a larger space, though the apartment at 224 West 18th Street includes a 3,000 square foot private garden and a four-hole putting green plus three bedrooms and a home office, and the building offers a gym and a roof deck (NYPost).

Top electronic dance music DJ Tiesto recently checked out a penthouse at 684 Broadway in NoHo. The $7.65 million three-bedroom co-op offers 2,200 square feet of private outdoor space and eco-conscious finishes within (NYPost).

Chelsea Clinton makes real estate news again, though this time only because her husband, Marc Mezvinsky, recently sold his Flatiron apartment–not far from the Whitman at 21 East 26th Street where the pair currently live–in the Grand Madison at 225 5th Avenue. The three-bedroom condo changed hands for $4.75 million; Mezvinsky paid $4 million for the apartment in 2008 (CurbedNY).

Judy Sheindlin–TV’s “Judge Judy,” just added a new apartment to her jurisdiction; the outspoken small-screen magistrate recently bought a penthouse co-op at the Rosario Candela-designed 14 Sutton Place South. Sheindlin bought the four-bedroom duplex apartment with two dining rooms, a library and a 900-bottle wine cellar for $8.5 million (TRD)

Big Tickets

Susan Weber Soros, ex-wife of financier/philanthropist George Soros, has listed her Upper West Side co-op at 115 Central Park West for $39 million. The 6,000 square-foot 19th-floor apartment has five bedrooms and 100 feet of Central Park views in addition to an 800-square-foot guest apartment on the 16th floor, two terraces–and a $5-plus million renovation. The apartment was briefly on the market last year for $50 million (WSJ).

Penthouse One atop the coveted Walker Tower at 212 West 18th Street just hit the market for $55 million. If it sells at that price, the unit would set a record for the sale of a Downtown apartment (the current sale record-holder is the penthouse at 18 Gramercy Park, which sold for $42 million to Houston Rockets owner Leslie Alexander; the penthouse at 56 Leonard Street recently went into contract for $47 million). The 6,000 square-foot spread in the newly-minted 47-unit luxury condo building spans the entire top floor and offers five bedrooms, 360-degree unobstructed Manhattan views, private outdoor space and radiant floor heat (TRD).