- David Koch, an American billionaire known for donating to conservative political causes, has died at age 79.
- The late philanthropist, who was worth an estimated $58.7 billion when he died (per Bloomberg), owned at least $143 million worth of real estate in New York City, the Hamptons, Aspen, Colorado, and Palm Beach, Florida.
- Koch's primary residence was an $18 million, 18-room duplex in an ultra-exclusive Manhattan building.
- In 2018, he paid cash for a $40.25 million Manhattan townhouse.
- He also owned a $18.8 million waterfront home in the Hamptons and a $10.5 million villa in Palm Beach.
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Billionaire conservative mega-donor David Koch has died at age 79.
The late Koch Industries co-owner was worth an estimated $58.7 billion when he died (per Bloomberg). Most of Koch's wealth stemmed from his 42% stake in Koch Industries, the industrial conglomerate with an annual revenue of about $110 billion, according to Forbes.
Known for his hefty donations to conservative political causes, Koch had a massive real-estate portfolio in New York City, the Hamptons, Aspen, Colorado, and Palm Beach, Florida.
According to calculations by Business Insider, Koch's real-estate holdings are worth at least $143 million (based on sale prices and Zillow estimates).
Here's a look at his known real-estate holdings, from his $40 million Manhattan townhouse to his $18.8 million oceanfront Hamptons mansion.