55 West 46th Street | The Real Deal New York

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55 West 46th Street

55 West 46th Street
New York, NY 10036
(212) 712-6000
Office, Retail, Sales, New Construction, Leasing/Rental, Condo (Building), Other

55 West 46th Street, also known as the International Gem Tower, is an office building and commercial condominium developed by Extell Development Company. The tower, completed in 2013, is located in the Diamond District and overlooks Sixth Avenue. Architecture firm Skidmore, Owings & Merrill LLP designed the building with column-free interiors, 10 inch perimeter ceilings, and floor-to-ceiling windows. The office portion contains 292,000 square feet of class-A office space. The buildings 34-story commercial condominium, which uses the 50 West 47th Street address, is tailored to diamond, gem, and jewelry industry tenants. Extell founder Gary Barnett began his career as a diamond trader in Antwerp, Belgium before returning to New York and getting into real estate. Building amenities include vaults, foreign trade zone designation, underground parking, a business center, restaurants, in-house catering, and a gym. The building has retail space.

In September 2014, SL Green Realty acquired the upper floors of the tower, 319,000 square feet of office space on floors 22 to 34, for $275 million from Extell. SL Green also acquired a retail store on 46th Street, the buildings parking garage, and the fitness center, and has the option of purchasing another 28,000 square feet of space on the second floor of the building for an additional $20 million. The Gemological Institute of America purchased three floors, about 80,000 square feet, for $51.2 million.


  • Address 55 West 46th Street
  • neighborhood Plaza District
  • borough Manhattan
  • owner Extell Development, SL Green Realty
  • developer Extell Development, SL Green Realty
  • owner entity EXTELL GT, LLC
  • PLANS DISCLOSED 12/06/2006
  • dob permit issued 07/21/2009
  • tco issued 11/27/2012
  • DOB FILE PLANS 12/06/2006
  • DOB FILE Link
  • LIST/LAUNCH SALES 05/07/2009
  • floors 34
  • Year Built 2009
  • ag file plans 01/23/2009
  • AG FILE Link
  • residential units 89
  • commercial units 42
  • total units 131
  • square feet 685,435
  • const. status Building Complete
  • block and lot 1-01262-7502
  • BIN 1034346

...-square-foot upper portion has its own entrance, at 55 West 46th Street, and few of the elaborate security features of the lower, office condo portion. SL...

...collectively as Tower 46 and have their entrance at 55 West 46th Street. Asking rent at the space was $100 per foot. Extell completed the structure, whose lower...

...th Street, which also has an address at 55 West 46th Street, according to a statement from the company. The space was previously marketed as rentals...

The Midtown-based real estate investment trust SL Green Realty and partner Jeff Sutton purchased a small, mid-block office building on 46th Street which they plan...

...next year, will get a separate entrance at 55 West 46th Street for tenants of the top 14 floors to use as traditional office space. The first...

...West 47th Street, with a second address at 55 West 46th Street. In February, Extell chief Gary Barnett denied rumors that his firm was buying nearby...

...Street and an office lobby will be at 55 West 46th Street. Also, a hotel is planned for 151-161 W. 57th Street, a collection of properties...

...Extell Development recently closed on the purchase of 55 West 46th Street in the Diamond District for $18 million, according to public records. The developer is planning...
  • Event Office Leasing
  • Address 55 West 46th Street
  • Neighborhood Midtown
  • Borough Manhattan
  • Square feet 31,000
  • Price per foot $ 100.00
The hedge fund signed a lease.
  • Event Sales
  • Address 50 West 47th Street
  • Neighborhood Plaza District
  • Borough Manhattan
  • Square feet 488,000
  • Price $ 13,000,000
  • Price per foot $ 26.64
  • Publication Date 07/01/2015
  • Event Date 05/22/2015
  • Party 1 Extell Development
  • Party 2 Gemological Institute of America
  • Event Sales
  • Address 50 West 47th Street
  • Neighborhood Plaza District
  • Borough Manhattan
  • Square feet 319,000
  • Price $ 275,000,000
  • Price per foot $ 862.07
The 22nd-34th floors of the building sold for $275 million.
  • Event Sales
  • Address 55 West 46th Street
  • Neighborhood Plaza District
  • Borough Manhattan
  • Price $ 18,000,000
  • Price per foot $ 679.00
The developer closed on the purchase of a development site for its Diamond District office tower for $18 million, or approximately $679 per buildable square foot.

...two years for its International Gem Tower at 55 West 46th Street. The building’s 290,863 square feet of available space was the most stubborn large block...