Leopardo and Michels have begun drilling and filling caissons at 210 North Carpenter.

They’re digging holes and filling them with concrete at 210 North Carpenter, the 12-story, 200,000-square-foot office building from Sterling Bay. Crews from general contractor (and future tenant) Leopardo Companies and Michels Corporation are sending caissons into the West Loop soil for what’s been dubbed the “McDonald’s Vendor Village” along the 1000-block of West Lake Street.

Sterling Bay rendering of 210 North Carpenter.

Crain’s had the announcement last month that Leopardo had signed on the be the first 210 North Carpenter tenant, turning construction into a quasi-D.I.Y. project, if you will. Leopardo’s corporate offices are in Hoffman Estates, and will remain there, but the Chicago staff will relocate from 333 West Wacker Drive when the new space is completed in 2018.

By the way, we tweeted to Adjustable Forms last month about their involvement as the masonry contractor, and they confirmed our suspicion that 210 North Carpenter *will* require a tower crane. Everyone wins.