Illinois State Capitol West Wing Renovation

Springfield, Illinois / United States of America

The West Wing of the Illinois State Capitol is the second phase of a comprehensive renovation program for the most significant governmental building in the state. This 293,000 square foot National Historic Landmark, built to the design of French émigré architect Alfred Piquenard between 1868 and 1888, represents the apogee of Second Empire design in Illinois. However, within fifty years of its completion, inappropriate changes to the building commenced, including fires, insensitive modifications both inside and out and the insertion of mezzanine office floors in a misguided effort to increase office capacity.

The mandate of this project was to restore the key spaces throughout the West Wing's four floors and basement simultaneous with implementation of new energy efficient HVAC systems, vital life safety upgrades, accessibility and security improvements, while also restoring the historic architecture. Planning for the $51M project began in 2009 and construction commenced in 2012 with completion occurring late 2013.

In February of 2014, the project was certified LEED Gold.

Architect of record

Philip Hamp, FAIA
Vinci | Hamp Architects, Inc.
1147 West Ohio Street, 6th Floor
Chicago, IL 60642
Phone: 312-733-7744

General contractor

Jeff Sauder
Core Construction
866 North Main Street
Morton, IL 61550, USA
Phone: 309-266-9768

Consultant 1

Paul Boland
Henneman Engineering
1605 South State Street
Champaign, IL 61820, USA
Phone: 217.359.1514

Consultant 2

Mike Flatt
Hanson Professional Services
1525 S. Sixth St.
Springfield, IL 62703, USA
Phone: 217-788-2450

Consultant 3

Gary Steffy
Gary Steffy Lighting Design
2900 South State Street, Suite 12
Ann Arbor, MI 48104
Phone: 734-747-6630

Consultant 4

Jerry Gross
Aon Risk Solutions
1000 Milwaukee Ave.-5th Fl.
Glenview, IL 60025
Phone: 847-953-7700


Tom Rossiter
Chicago, IL n/a, USA
Phone: 312-543-8233