Salesforce Tower at the Transbay Transit Center
|Former names||Transbay Tower|
|Preceded by||Transamerica Pyramid|
|Type||Commercial offices, retail|
|Location||415 Mission Street
San Francisco, California
|Owner||Boston Properties (95%)
Hines Interests LP (5%)
|Architectural||1,070 ft (326 m)|
|Roof||912 ft (278 m)|
|Floor area||1,370,000 sq ft (127,000 m2)|
|Design and construction|
|Architect||Pelli Clarke Pelli Architects|
|Engineer||Magnusson Klemencic Associates|
|Main contractor||Clark Construction Group /
Hathaway Dinwiddie (A Joint Venture)
Salesforce Tower, formerly known as the Transbay Tower, is a 1,070 ft (326 m) office skyscraper under construction in the South of Market district of downtown San Francisco. Located at 415 Mission Street between First and Fremont Streets, next to the Transbay Transit Center site, Salesforce Tower is the centerpiece of the San Francisco Transbay redevelopment plan that contains a mix of office, transportation, retail, and residential uses. When completed, the tower will be the tallest in San Francisco and a defining building in the burgeoning South of Market area. It will also be the second tallest building west of the Mississippi River after the Wilshire Grand Tower in Los Angeles, scheduled to be completed several months earlier and standing at a height of 1,100 feet (340 m).
Developer Hines, with a proposal by architect César Pelli, was selected as the winner of a global competition in 2007 to entitle and purchase the site. A seven-member jury of development experts assembled by the Transbay Joint Powers Authority (TJPA) selected Hines over proposals from Forest City Enterprises and architect Richard Rogers; and from Rockefeller Development Group Corp. and Skidmore Owings & Merrill. In 2012, Boston Properties acquired a 50% stake in the project and in 2013 acquired most of Hines' remaining interest to become 95% owners of the project.
The site of the tower was in a dilapidated area, formerly used as a ground-level entrance to the San Francisco Transbay Terminal, which was demolished in 2011. The TJPA sold the parcel to Boston Properties and Hines for US$192 million, and ceremonial groundbreaking for the new tower occurred on March 27, 2013. Actual below-grade construction work started in late 2013. The general contractor on the project is a joint venture between Clark Construction and Hathaway Dinwiddie Construction.
The development was originally contracted on "spec", meaning the developer/owner did not have a major tenant lease secured beforehand. On April 11, 2014, Salesforce.com announced that it signed a lease for 714,000 square feet (66,300 m2) on floors 1, 3-30, and 61 to become the building's anchor tenant. Previously known as the Transbay Tower, the building was renamed Salesforce Tower. The lease was valued at US$560 million over 15 and a half years starting in 2017.
The tower is expected to be completed in 2018 and will have 61 floors, with a decorative crown reaching 1,070 ft (326 m). The original proposal called for a 1,200-foot (370 m) tower, but the height was later reduced. It will be the tallest building in San Francisco, surpassing the Transamerica Pyramid by more than 200 feet (61 m). The tower would be the seventh tallest building in the United States if standing in 2013, and is expected to become the second tallest building in the Western United States 
- "Salesforce Tower - Clark Construction". Clark Construction Group, LLC.
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- Salesforce Tower at Emporis
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- Official website
- Transbay Demolition and Construction Blog
- Salesforce Tower construction webcam
- Transbay Transit Center proposal from Pelli Clarke Pelli Architects