Chicago is among first major U.S. cities to adopt and exceed the 2021 International Energy Conservation Code. FIGURE 1. The 2022 Code will result in an approximately 40% improvement in energy ...
Locally Researched by: Craig Douglas, Ethan Nelson and Andrew Vaupel, American City Business Journals Oct 16, 2025, 5:00am CDT Editor's Note: The Business Journals evaluated almost 33,200 national ZIP ...
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