Motorola Mobility

In Chicago's real estate market, ultrawide buildings are in vogue. Here's why.

In Chicago's real estate market, ultrawide buildings are in vogue. Here's why.

Although they were built for now-outdated uses such as mail-order catalogs, Chicago’s widest buildings have established 21st-century relevance by landing some of the city’s largest office leases in recent years.

In nearly simultaneous deals, Chicago’s sprawling structures ended 2017 on a high note, with more than $1 billion in fresh capital flowing into two properties along the Chicago River: Groupon’s Chicago Avenue headquarters and the old main post office building.

Those big investments, as well as Chicago’s pursuit of Amazon’s second headquarters — which the e-commerce giant said could create as many as 50,000 high-paying jobs in the North American city that it chooses —...

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