The U.S.' first-ever African-American female senator, Braun, 65, paid $1.7 million in December 2006 for the house, which is part of the "Professors Row" cluster of dwellings in Hyde Park that were constructed for professors at nearby University of Chicago.
"I'm staying in Hyde Park," she said.
Built in 1916, the 13-room home had been on the market since March 2010 for $1.9 million. Features include 4-1/2 baths, unpainted woodwork, leaded glass windows, high ceilings, wood-burning fireplaces, and a deep, professionally landscaped back yard.
In 2010, Braun's listing agent told Elite Street that Braun "loves" the town home but "decided it was too big."
On Sept. 6, Braun's lender, U.S. Bank filed a foreclosure lawsuit in Cook County Chancery Court against her, alleging that no payments had been made since September 2011 and that Braun owed $1,443,243 on the home.
Public records do not yet identify the buyer of the home.