350 Mission Street is a proposed skyscraper

Skyscraper

A skyscraper is a tall, continuously habitable building of many stories, often designed for office and commercial use. There is no official definition or height above which a building may be classified as a skyscraper...

 located in San Francisco's

San Francisco, California

San Francisco , officially the City and County of San Francisco, is the financial, cultural, and transportation center of the San Francisco Bay Area, a region of 7.15 million people which includes San Jose and Oakland...

 South of Market district. The current design is 375 feet (114 m) above street level, with 27 stories. Upon completion, the building plans to attain LEED

Leadership in Energy and Environmental Design

Leadership in Energy and Environmental Design consists of a suite of rating systems for the design, construction and operation of high performance green buildings, homes and neighborhoods....

Gold status.

History

The first version of the project was initially proposed at 850 feet (259 m)-tall with 1000000 square feet (92,903 m²) of office space, but the developer reduced the project height by 300 feet (91 m) and the floor area by over 600000 square feet (55,741.8 m²). This was because the first version of the project exceeded the local height limit by 300 feet (91 m). The second version of the project was compliant with the local 550 foot (168 m) height restriction, at 550 feet (168 m) tall. Even though the city of San Francisco released a zoning plan that allowed the tower to rise as high as 700 feet (213 m) on May 1, 2008, the developer the reduced size of the project to 375 ft (114 m) and 27 stories about two months later. The third and current version stands significantly shorter than the proposed height limit because the developer stated that it was uneconomical to build taller than 27 stories on a 19000 sq ft (1,765.2 m²)-sized lot. The square footage of the building increased slightly to 350000 sq ft (32,516.1 m²), up from 340000 sq ft (31,587 m²).