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Thursday, October 29, 2026Oct 29

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Steam Logistics taking Unum space until new Chattanooga headquarters ready in 2022

Staff file photo / Unum's 555 Walnut building is seen in the foreground in front of the insurer's East tower in this file photo. Steam Logistics is the latest company to lease space at 555 Walnut.
Staff file photo / Unum's 555 Walnut building is seen in the foreground in front of the insurer's East tower in this file photo. Steam Logistics is the latest company to lease space at 555 Walnut. Staff file photo / Unum's 555 Walnut building is seen in the foreground in front of the insurer's East tower in this file photo. Steam Logistics is the latest company to lease space at 555 Walnut.

Fast-growing Steam Logistics has taken a large chunk of space in one of Unum’s buildings in downtown Chattanooga as the company awaits the opening of its new headquarters nearby in 2022.

Jason Provonsha, chief executive of the Chattanooga-based logistics business, said Steam is leasing 30,000 square feet in the 555 Walnut building on Unum’s campus for one year.

“It has been a great short-term solution to our space needs and Unum has been really helpful and flexible to allow us to do something short term,” he said.

Steam already has moved about 100 people into the space and eventually will have 250 workers when the build-out is complete, Provonsha said.

Construction on Steam’s new headquarters in the John Ross Building at Fourth and Broad streets is expected to start in January, he said. Plans are to be in that overhauled building by November, Provonsha said.