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Calpine Center
Calpine building houston tx-corner of texas milam.jpg
Calpine building, corner of Milam St. and Texas St.
General information
Type Office
Location 717 Texas Street, Houston, Texas
Coordinates 29°45′42″N 95°21′51″W / 29.7616°N 95.3643°W / 29.7616; -95.3643
Completed 2003
Opening November 10, 2003
Height
Roof 453 ft (138 m)
Technical details
Floor count 33

The Calpine Center is a very tall building, called a skyscraper, located in downtown Houston, Texas. It stands 453 feet (138 meters) high. The building has 33 floors of modern office space, known as "Class A" space. It is the 41st tallest building in Houston.

The Calpine Center is home to the main offices of Calpine Corporation, an energy company. The building was developed by two companies, Hines and Prime Asset Management. The design was created by the Houston office of HOK, a well-known architecture firm. Turner Construction was the company that built it. The building is also connected to Houston's special downtown tunnel system, which helps people get around easily.

Building History and Development

This section explains how the Calpine Center was planned and built.

Early Plans and Leases

When the Calpine Center was first planned, Calpine Corporation intended to rent a large amount of space, about 300,000 square feet (27,871 square meters). However, by February 2003, Calpine announced they would rent out some of their extra space to other businesses.

The building was expected to be finished by the end of 2003. By July 2003, about 82% of the office space was already rented out. Calpine and another energy company, Burlington Resources, each agreed to rent 250,000 square feet (23,226 square meters) of space. A law firm called Jones Day also agreed to rent over 50,000 square feet (4,645 square meters).

Grand Opening and Occupancy

The Calpine Center officially opened its doors on Monday, November 10, 2003. Besides Calpine and Burlington Resources, other companies moved in around the opening time. These included Cheniere Energy Inc. and Hines's local development office.

In 2004, another company, Avalon Advisors LP, rented 9,385 square feet (872 square meters) of space. This brought the building's total occupancy to 86%. This means 86% of the building's space was being used by businesses.

Calpine building houston tx-looking up
Tower, with Houston Chronicle building seen at lower right
Calpine building houston tx-street sign
Street sign detail
Calpine building houston tx-entrance
Main entrance on Texas St.
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