The insurance company has purchased a building at 29 North Wacker Drive.
RELATED: Allstate selling Northbrook headquarters could impact local school districts
In a statement a spokesperson said the building may become an investment property or even a new headquarters.
Allstate was a good neighbor in Northbrook for 50 years, but like so many industries feeling the impact of the work-from-home movement, the insurance giant is sold off the majority of its 186-acre corporate campus in October 2021.
Mayor Lori Lightfoot tweeted she is thrilled with Allstate's decision.