Williams Tower - Major Tenants

Major Tenants

The building was originally named for its major tenant, Transco Energy corporation. The name stayed on the building until 1999 after Hines, the building's owner, agreed to change the name of the building some four years after Transco was bought by Williams in 1995. The building once again bears the name of its major tenant, the Williams energy company, which is headquartered in Tulsa, Oklahoma. Even after the name change, the building is often referred to as "the Transco" by long-time Houston residents. In the spring of 2008, Hines again purchased the Tower for 300 million. It is insured at 500 million.

Other tenants include Quanta Services and Rowan Companies.