909 Chestnut Street

909 Chestnut (formerly One SBC Center, One Bell Center, and One AT&T Center) is a 44-story building in downtown St. Louis, Missouri at 909 Chestnut Street on the Gateway Mall. It is Missouri's largest building by area with 1,400,000 square feet (130,000 m²).[4] The building is currently completely vacant and was acquired by new ownership in 2019.[5]

909 Chestnut
Former names	One AT&T Center One Bell Center SBC Building Southwestern Bell Telephone Building
General information
Status	Completed
Type	Commercial offices
Location	909 Chestnut Street St. Louis, Missouri
Coordinates	38.6277°N 90.1946°W / 38.6277; -90.1946
Completed	1986 (1986)
Cost	US$150 million
Owner	Inland Real Estate Group
Height
Roof	179 m (587 ft)
Technical details
Floor count	44
Floor area	1,400,000 sq ft (130,000 m2)
Lifts/elevators	24
Design and construction
Architect	Hellmuth, Obata & Kassabaum
References
[1][2][3]

The building was built to replace the Southwestern Bell Building as the Southwestern Bell world headquarters. However, in a series of mergers the headquarters moved to San Antonio, Texas and was later renamed AT&T.

In 2006 Inland American Real Estate Trust, a subsidiary of the Inland Real Estate Group in Chicago bought the building for $205 million. AT&T then signed a 10-year lease to be the sole tenant.[6]

At one point, 4,800 AT&T employees worked in the building but that number has dropped to approximately 2,000 through layoffs, outsourcing and remote work. In September 2013, AT&T announced it would vacate the building over the next 12 months, although its lease on the building runs through 2017.[7]

Since AT&T vacated the building in 2017, it has remained the largest vacant office building in the state of Missouri. Multiple attempts of selling the building in auctions have failed on at least five separate occasions, most recently in early 2021.