Extell Development has closed its $65 million acquisition of 110 East 55th Street, a 19-story Midtown Manhattan office tower also known as Park 55. The seller, the Parkoff Organization, completed the deal after months of back-and-forth negotiations. Property records became public Monday.

JT Magen, a construction company that previously worked with Extell on a Boston foreclosure, held an affiliate stake in the deal. The property sits in prime Midtown real estate, where office conversions and repositioning plays have become increasingly attractive to developers facing soft demand for traditional commercial space.

Extell's $65 million price reflects the compressed valuations hitting Manhattan office buildings. The midtown market has struggled with rising vacancy rates and flight to newer, amenity-rich Class A space. Sellers like Parkoff have faced pressure to move aging assets before capitalization rates compress further or debt matures at unfavorable terms.

For Extell, the acquisition signals confidence in the conversion or repositioning potential of vintage office stock. The developer has aggressively pursued distressed and below-market-rate properties across New York City. The Parkoff sale fits that pattern. Extell founder Gary Barnett has bet heavily on residential and mixed-use development, particularly in prime Manhattan submarkets.

The deal carries implications for the broader Manhattan office market. Prices for mid-size office buildings in secondary locations continue to compress. Developers with capital and operational expertise see these properties as conversion candidates. Residential-to-office conversions face regulatory hurdles under New York City zoning, but office-to-residential plays bypass those barriers.

Parkoff's exit from 110 East 55th comes as institutional investors and REITs reduce office exposure. Smaller regional owners like Parkoff often lack the scale to weather prolonged vacancy spells or refin