Billionaire Bill Koch has put his 16,600-square-foot log mansion on 52 acres in Aspen up for sale for $125 million.

billionaire industrialist Bill Koch is trying again to unload the rest of the property. This time he’s asking $125 million, more than double the 2016 price.

Koch, 84, who is worth an estimated $2 billion according to Forbes, made his fortune through oil and investments—but over the years has plowed a hefty portion of that wealth into real estate ...

Billionaire Bill Koch has listed his expansive Aspen estate for $125 million, a significant increase from the $26.5 million he paid for it in 2007. Shawn O'Connor Billionaire energy mogul Bill ...

Be the first to know about the biggest and best luxury home sales and listings by signing up for our Mansion Deals email alert. After selling a portion of his Elk Mountain Lodge estate in Aspen, Colo.

Billionaire energy mogul Bill Koch is looking to cash in on Aspen’s red-hot luxury real estate market by listing his sprawling 52-acre mountain estate for a staggering $125 million, the Wall Street ...