[7] Trizec defeated 16 other real estate companies so it could purchase the center for an amount reported by Tanya Rutledge of the Houston Business Journal as $270 million.

Paul Layne, a vice president of the office division of Trizec, said that the shifting of tenants would lead to Allen Center having an occupancy rate of 92 percent in 1998.

Hess Corporation announced it would vacate approximately 500,000 square feet (46,000 m2) of space in the complex when a new office tower in the east side of Downtown Houston opened.

[10] Major renovations to the property were completed in March 2021; these included new lobbies, bike storage, and a suite of rooms designated for breastfeeding mothers.

One Allen Center employs a composite stub-girder steel frame floor system, originally developed in part by Joseph Colaco then of Ellisor Engineers Inc., currently of CBM Engineers, Inc.[13] Macquarie Bank houses its Houston representative office in Suite 3100 of the building.