Dallas-based Compass Datacenters is poised to start building its own five-building campus on the former site of the Sears headquarters in western Hoffman Estates. John Starks/jstarks@dailyherald.com

Construction is about to start on Compass Datacenters’ five-building campus on 273 acres in Hoffman Estates after the firm invested more than a year on the environmentally respectful demolition of the massive former Sears headquarters once housed there.

Hoffman Estates Village Manager Eric Palm said the construction permit for the core and shell of the first building has been issued. Buildings two and three should receive their foundation permits later this month and likely be ready for their core and shell permits in either October or November.

The project represents a $10 billion investme

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