Gary Barnett sealed the deal on the biggest piece of his sprawling Midtown assemblage. Barnett’s Extell Development closed on the development site at 405-417 Park Avenue for $500 million, sources familiar with the deal said. Barnett also purchased air rights from nearby Central Synagogue for $20 million and may be looking to buy at least two adjacent buildings to piece together an even bigger footprint. The properties traded span the full blockfront between East 54th and East 55th streets. They were owned by two separate ownership groups: Swedish investor Corem Property Group AB sold 417 Park Avenue to Extell, while […]

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