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New York firm pays $35 million for office tower next to Chicago’s Old Post Office

601W buys 16-story building at steep discount to previous value
The 16-story office building at 525 W. Van Buren St. in Chicago has sold for $35 million. (CoStar)
The 16-story office building at 525 W. Van Buren St. in Chicago has sold for $35 million. (CoStar)
CoStar News
November 20, 2025 | 6:15 P.M.

The owner of the massive Old Post Office in Chicago has scooped up the property next door for $35 million in the latest example of heavily discounted office deals downtown.

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