Although the building was originally planned to be entirely residential, Bloomberg L.P. negotiated a deal with Vornado Realty Trust to lease 700,000 sq ft (65,000 m²) of office space at the base of the tower.
STUDIOS Architecture did the design, which includes rows of uniform desks for approximately 4,000 employees and a large central atrium known as "the Link" that overlooks the courtyard.
Paul Goldberger, in the August 6, 2007, issue of The New Yorker magazine, lauded the Bloomberg offices as "a newsroom truly designed for the electronic age ... a dazzling work environment tucked inside a refined but conventional skyscraper."
By 2011, Bloomberg L.P. added another 200,000 sq ft (19,000 m²) of office space at 731 Lexington Avenue and announced plans to expand to an additional 400,000 sq ft (37,000 m²) in the former Philip Morris building at 120 Park Avenue.
Bloomberg pays Alexander's, the owner of the building, $105 million in annual rent.

The PBS commentary series Charlie Rose was formerly produced at 731 Lexington Avenue.
Bloomberg Television also has its flagship studio in the building.

Retail tenants include The Home Depot, H&M, and The Container Store.
Sirio Maccioni's Le Cirque restaurant moved to the building from The New York Palace Hotel in 2006, but vacated in 2018.

Various low-power television stations transmit from antennas on the top of the building.

Residential tenants included Beyoncé, former NBC Nightly News anchor Brian Williams, and Bobby Abreu.
Johnny Damon sold his unit for $8 million in 2010.
Tina Knowles sold her unit for $5.6 million in 2011.
Jack Welch purchased a unit in the building for $6.4 million and Jeffrey Immelt paid just over $4 million for a unit.
Hedge fund manager Steven A. Cohen's unit is listed for sale for $67.5 million.
Joseph Betesh, co-owner of hip hop clothing outlet Dr. Jay's, owned an apartment in the building from 2005 to 2013, which is now owned by VFT Investments.
Although the building was originally planned to be entirely residential, Bloomberg L.P. negotiated a deal with Vornado Realty Trust to lease 700,000 sq ft (65,000 m²) of office space at the base of the tower. STUDIOS Architecture did the design, which includes rows of uniform desks for approximately 4,000 employees and a large central atrium known as "the Link" that overlooks the courtyard. Paul Goldberger, in the August 6, 2007, issue of The New Yorker magazine, lauded the Bloomberg offices as "a newsroom truly designed for the electronic age ... a dazzling work environment tucked inside a refined but conventional skyscraper." By 2011, Bloomberg L.P. added another 200,000 sq ft (19,000 m²) of office space at 731 Lexington Avenue and announced plans to expand to an additional 400,000 sq ft (37,000 m²) in the former Philip Morris building at 120 Park Avenue. Bloomberg pays Alexander's, the owner of the building, $105 million in annual rent.
The PBS commentary series Charlie Rose was formerly produced at 731 Lexington Avenue. Bloomberg Television also has its flagship studio in the building.
Retail tenants include The Home Depot, H&M, and The Container Store. Sirio Maccioni's Le Cirque restaurant moved to the building from The New York Palace Hotel in 2006, but vacated in 2018.
Various low-power television stations transmit from antennas on the top of the building.
Residential tenants included Beyoncé, former NBC Nightly News anchor Brian Williams, and Bobby Abreu. Johnny Damon sold his unit for $8 million in 2010. Tina Knowles sold her unit for $5.6 million in 2011. Jack Welch purchased a unit in the building for $6.4 million and Jeffrey Immelt paid just over $4 million for a unit. Hedge fund manager Steven A. Cohen's unit is listed for sale for $67.5 million. Joseph Betesh, co-owner of hip hop clothing outlet Dr. Jay's, owned an apartment in the building from 2005 to 2013, which is now owned by VFT Investments.
731 Lexington Avenue