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 Journal reported.

Koch, 84, who built his $2 billion fortune in oil and investments, purchased the property in 2007 for $26.5 million.

Over the years, he expanded and transformed the former event venue into a private retreat, adding guest cabins, modern amenities and acquiring 30 additional acres.


  The 52-acre property, located 11 miles from downtown Aspen, features a 16,631-square-foot main lodge with eight bedrooms and 10 bathrooms. Shawn O'Connor The 52-acre property, located 11 miles from downtown Aspen, features a 16,631-square-foot main lodge with eight bedrooms and 10 bathrooms. Shawn O'Connor

  The estate includes luxurious rustic details, alongside seven guest cabins, a gym, and scenic outdoor amenities like ponds, hot tubs and trails. Shawn O'Connor The estate includes luxurious rustic details, alongside seven guest cabins, a gym, and scenic outdoor amenities like ponds, hot tubs and trails. Shawn O'Connor

With Aspen real estate in high demand, Koch and his wife, Bridget Rooney Koch, decided it was time to sell.

“[We] looked at the strong housing market and figured it was time to let someone else enjoy it,” he told the Journal.

This isn’t the first time Koch has attempted to offload the estate. In 2015, he listed the property for $100 million, later dropping the price to $80 million.

He also offered to sell it in pieces — $60 million for the 52-acre parcel with the main lodge, and $20 million for the additional land.


  Originally an event venue, Koch transformed it into a private retreat and previously attempted to sell it for $100 million in 2015. Shawn O'Connor Originally an event venue, Koch transformed it into a private retreat and previously attempted to sell it for $100 million in 2015. Shawn O'Connor

  Bill Koch. AP Bill Koch. AP

Ultimately, he sold 31 acres for $14.5 million but held onto the main residence, using it as a private getaway.

More recently, the estate was available as a luxury rental, commanding a cool $35,000 per night or $300,000 per month.

Located 11 miles from downtown Aspen, the property includes a 16,631-square-foot main lodge featuring eight bedrooms, 10 bathrooms, 30-foot ceilings, plus grand rustic details like log beams, antler chandeliers and a massive stone fireplace.


  The property has also been available to rent for $35,000 a night. Shawn O'Connor The property has also been available to rent for $35,000 a night. Shawn O'Connor

  The stunning formal dining room. Shawn O'Connor The stunning formal dining room. Shawn O'Connor

The estate also offers seven guest cabins, blending “frontier-inspired luxury” with “modern sustainability,” according to the listing.

A state-of-the-art gym, two hot tubs, two ponds and a network of hiking trails add to the property’s appeal.

The estate is being marketed by Steven Shane of Compass, who describes it as a “once-in-a-lifetime opportunity” to own Aspen’s premier multi-generational retreat.


  The primary ensuite bedroom with a woodburning fireplace. Shawn O'Connor The primary ensuite bedroom with a woodburning fireplace. Shawn O'Connor

  The hot tub with mountain vistas. Shawn O'Connor The hot tub with mountain vistas. Shawn O'Connor

  The property is situated on 52 acres. Bloomberg via Getty Images The property is situated on 52 acres. Bloomberg via Getty Images

“Luxury is a concept as varied as the individuals who seek it. Yet, one universal truth remains: the most valuable investment is not measured in monetary terms but in making lasting memories with those closest to us,” Shane told The Post.

“While the ultra-wealthy may have many investment opportunities, none rival the profound richness of sharing time with loved ones across generations. Aspen’s 125 Rooney Circle is one such property.”

Koch, meanwhile, still has plenty of real estate holdings, including homes in New York City, Palm Beach and Cape Cod.

He also owns a 4,500-acre Colorado ranch featuring a 75-building replica of an Old West town.

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