732 West Randolph has begun climbing on the smallest tower-crane-enabled construction site in Chicago. The postage-stamp sized lot will soon hold a new eight-story boutique office building with 56,000 rentable square feet of working space. General contractor Maris Construction and concrete contractor Pepper Construction were working on the fourth level last week. Designed by Hirsch MPG, 732 West Randolph will connect on its first six floors with 730 West Randolph next door, and will include a rooftop deck and basement fitness center.

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