The energy mogul is looking to cash in on Aspen’s red-hot luxury market by offering up his massive property that’s replete ...

The post Oil Billionaire Bill Koch Lists His Eco-Friendly 'Once in a Lifetime' Aspen Estate for $125 Million—More Than Four ...

A sprawling Colorado estate long owned by billionaire businessman, sailor, and avid art and wine collector William “Bill” ...

The post Staggering $125 Million Aspen Paradise Beats Out Romance Novelist Jackie Collins' Custom Beverly Hills Mansion To ...

Now, it seems he is ready to claw some of it back with the sale of his sustainable Aspen spread, telling the Wall Street Journal that he and his wife, Bridget Rooney Koch, made the decision to let ...

For the third straight quarter, St. Louis, led as the top luxury housing market in the U.S., according to the latest Wall ...

After selling a portion of his Elk Mountain Lodge estate in Aspen, Colo., billionaire industrialist Bill Koch is trying again ...