- 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.
- Visit Business Insider's homepage for more stories .
Billionaire David Koch owned at least $143 million of real estate in NYC, the Hamptons, Aspen, and Florida. Take a look at his lavish homes, from a $40 million Manhattan townhouse to a 13-bedroom Palm Beach villa.
Mark Lennihan / AP Images
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.
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- 48 US cities where you can buy a mansion for under $1 million
SEE ALSO: How the billionaire Koch brothers became 2 of the most influential political donors in America
DON'T MISS: David Koch is dead. His and his brother Charles' combined net worth is over $100 billion, even after years of family feuds and massive lawsuits. Here's how they made and spent their wealth.
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