CHICAGO—The City of Chicago City Council has named the Wrigley Building an official Chicago Landmark. In February, The Commission on Chicago Landmarks had unanimously approved a recommendation to give landmark status to the building, which includes two towers at 400 and 410 North Michigan and also supported a Class L property tax classification for the property.

The Wrigley Building is owned by a consortium of investors led by BDT Capital Partners and includes Zeller Realty Group, Eric Lefkofsky and Brad Keywell personally, as minority investors. Zeller Realty Group is serving as development manager and is responsible for leasing and managing the property.

Plans to begin extensive renovations to preserve and protect the exterior façade and interior building components are in the final stages of approval by city, state and federal historic preservation agencies.

In addition, updates to the building’s systems, interiors and amenities to fit today’s workforce are planned to begin this summer when building permits are issued.

Renovation plans include infrastructure improvements to HVAC equipment and control systems, a sprinkler system installation, expansion to the property’s electrical service and a new fire alarm system. Both main lobbies will be renovated to include stone, mahogany and detailed plaster finishes that complement the historic bronze elevators and clock details that will be retained. Additionally, energy-efficient windows will be installed on the office floors.