Mount Sinai Sells Another Condo at 633 Third Avenue

633 Third Avenue.
633 Third Avenue.


Property tax law firm Marcus & Pollack purchased a commercial condominium unit from Mount Sinai Health System at 633 Third Avenue between East 41st and East 40th Streets for $27 million.

The deal for the entire ninth-floor, 44,779-square-foot condo in the 41-story office building closed on July 29, according to property records released yesterday.

Cushman & Wakefield’s Jonathan Serko, Josh Kuriloff, Barry Zeller, Richard Serko, Andrew Braver and Nicholas Markel brokered the deal on behalf of Mount Sinai, while Michael Rudder and Michael Heller of Rudder Property Group represented the law firm.

Mr. Rudder declined to comment on the deal. A spokesman for C&W did not immediately respond to requests for comment.

In October of last year, Mount Sinai sold the entire 10th-floor condo in the Third Avenue building to nonprofit Community Service Society of New York for $27.5 million, according to city filings.

That sale came following the hospital’s signing of a massive 32-year, 450,000-square-foot lease in March 2014 for floors two through five and the ninth and 10th floors at 150 East 42nd Street, as Commercial Observer reported at that time. The space houses the hospital’s finance, human resources, information technology, legal and other corporate services offices.

Mount Sinai didn’t not immediately respond for requests for comment on the recent transaction.

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