It’s a billion dollar question: what is Chicago's Willis Tower really worth? In the past few months alone, public and private appraisers have produced values ranging from $999 million to $1.4 billion. For the 4.5 million-square-foot, Blackstone-owned skyscraper that was once the tallest building in the world, even a minor difference in methodology can significantly impact city tax rolls and sway commercial real estate markets, reports Emma Whalen. 🗞️ https://bit.ly/3TP3Hd9 📺 https://bit.ly/44t