Billionaire and member of the famed Koch family Bill Koch tried to offload his massive compound in Aspen for nine figures, but ended up selling it at auction for nearly $100 million below the listing price.
The founder of Oxbow Carbon bought the ski-town property in 2007 for $26.5 million and later added 31 acres.
The compound hit the market in 2015 with an asking price of $100 million. Koch eventually dropped the price to $80 million the following year. In 2020, he sold the additional 31 acres he added for $14.5 million, but held on to the lodge and the rest of the 52-acre property.
In 2025, Koch relisted the property at $125 million, but it didn’t sell. In 2026, Koch went the auction route — a tactic sometimes employed for notable properties. The property finally sold in July, but for a fraction of its original listing price.
The Wall Street Journal reported that the winning bid was $33.5 million — a 73% decrease from its peak listing price. Koch’s lofty $125 million price would have been the most expensive sale in Colorado history, beating Palatir Alex Karp’s recent $120 million ranch purchase in nearby Snowmass, Colorado.
Koch, who has a net worth of $2 billion, according to Forbes, sold his stake in Koch Industries to his brothers for $470 million in 1983. That left him with plenty of money to make renovations to his Colorado ranch.
The recently sold main lodge spans 16,600 square feet and is accompanied by seven cabins — one of which is a home gym. The property also includes hot tubs, hiking trails, and an altitude-acclimation room.
See what else awaits the new owner of this massive compound.
Bill Koch purchased the 52-acre property for $26.5 million in 2007.
According to Architectural Digest, the property was used as a dude ranch and an event venue before Koch bought it.
He later added about 31 more acres to the property.
He eventually sold those extra acres for $14.5 million in 2020.
In 2015, Koch listed the entire property for $100 million.
He dropped the price to $80 million in 2016, but it didn’t sell.
The property was delisted and relisted various times.
Ten years after the original listing, Koch listed the property again for $125 million at the beginning of 2025.
Before then, he tried renting out the main lodge for $300,000 a week.
The price was dropped one final time to $99 million at the end of 2025 before eventually heading to auction.
The property went to auction through Concierge Auctions in July.
This 52-acre compound sold for $33.5 million at auction.
The auction went on from July 7 to 17.
Eight structures are spread out across the compound.
The main lodge is 16,631 square feet.
Counting the other buildings, there are 14 bedrooms and 17 bathrooms.
The other buildings bring the total square footage to 25,277.
The lodge, also known as the primary cabin, is two stories with 30-foot ceilings.
It has a dining room that seats 20 people, a screening room, and a living room with a wall of windows that faces the mountains.
Other amenities around the property include a gym, hiking trails, two hot tubs, and an altitude-acclimation room.
And if there’s not enough to do on the grounds, the estate is 11 miles from Aspen by car.
Correction: February 28, 2025 — Bill Koch’s Aspen property was once on the market for $300,000 a week, not $300,000 a month. It’s also unclear when Koch acquired 30 additional acres that he sold in 2020. An earlier version of this story said he added them in 2015.
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