About 707 17th Street
707 17th Street, formerly known as the MCI Building, is a skyscraper in Denver, Colorado. The building was completed in 1981, and rises 42 floors and 522 feet (159 m) in height. The building stands as the sixth-tallest building in Denver as of 2010. It also stood as the tallest building in the city at the time of its 1981 completion, and held that distinction for two years until it was surpassed by the 709-foot (216 m) 1801 California Street in 1983. 707 17th Street was known as MCI Plaza until 2005; MCI Inc. filed for bankruptcy in 2002, and the company was subsequently acquired by Verizon Communications on February 14, 2005. Prior to its bankruptcy, MCI occupied the uppermost commercial floors of 707 17th Street, and served as the structure's primary tenant. However, even before MCI's acquirement, 707 17th Street stood partially vanant, and was nearing a 50% vacancy rate in 2002. This ended on September 30, 2002, when architectural, engineering and construction management firm Carter & Burgess signed a deal to lease 86,000 square feet (8,000 m) of office space. This deal was one of largest office transactions in Denver in 2006.