After tech, the billionaire businessmen of Silicon Valley love real estate. Tech moguls have been snapping up properties across the globe, collecting them like infinity stones. Among them is Alex Karp, cofounder and CEO of data-mining giant Palantir Technologies. The Palantir CEO with a net worth of $14.4 billion according to the Bloomberg Billionaires Index, has built a nine-figure real estate portfolio that reportedly includes as many as 20 properties across the globe. From a $120 million monastery to a $46 million Miami home, he owns some of the most interesting properties.
500-acre estate in New Hampshire
Despite being one of the most popular names in Silicon Valley, Karp prefers to stay under the radar. This is probably why his primary residence is a 500-acre estate in Lyman, New Hampshire, part of which he purchased for $825,000 in 2019. Lyamn is a rural town in Grafton County that got its start as a logging and farming community. The closest major city is Manchester, New Hampshire, nearly a two-hour drive south. Home to less than 600 people, the remote town seems well-suited for Karp, who is known to work from the property’s barn at times.
$46 million Miami estate
Karp’s waterfront property is nearly 10,000 square feet and has six bedrooms, seven bathrooms, and a heated pool.
In 2026, Palantir moved its headquarters from Denver to Aventura, a Miami suburb. But back in June 2025, Hibiscus East LLC, a Delaware entity tied to the 58-year-old purchased a $46 million estate at 55 East San Marino Drive. The estate is located on San Marino Island, one of the six man-made Venetian Islands in Biscayne Bay with homes owned by celebrities, athletes, business executives and more. According to a Zillow listing, Karp’s waterfront property is nearly 10,000 square feet and has six bedrooms, seven bathrooms, and a heated pool.
$28 million Miami estate
The 2,922-square-foot house was built in 1935 with two bedrooms and 2.5 bathrooms.
Karp has joined the league of billionaires buying up multimillion-dollar homes in Miami in recent years including Jeff Bezos, Sergey Brin and Mark Zuckerberg. The Real Deal reported that Karp also purchased the waterfront house next door to his estate at 55 East San Marino Drive. While listed by Dora Puig of Luxe Living Realty for $30 million, it was sold to a billionaire for $28.5 million. The second home, at 29 East San Marino Drive, is a 2,922-square-foot house built in 1935 with two bedrooms and 2.5 bathrooms. Apparently, the two properties appear to be a part of Karp’s larger plan to build a compound on the island. Together, the two total more than 0.8 acres and offer 265 feet of waterfront.
$120 million monastery
Among the shining stars of Karp’s real estate portfolio is the 3,700-acre ranch about 15 miles north of Aspen at St. Benedict’s Monastery.
Among the shining stars of Karp’s real estate portfolio is the 3,700-acre ranch about 15 miles north of Aspen at St. Benedict’s Monastery. According to the original listing the property is “situated in a private mountain valley” in Capitol Creek Valley. The property was originally listed for $150 million in 2024, but ultimately sold to Karp for $120 million, according to The Wall Street Journal, which cited a source familiar with the deal.The land for St. Benedict’s Monastery was purchased in 1956 by the Cistercian Order of the Strict Observance, a Roman Catholic religious order known as the Trappists, for an undisclosed amount. The monastery was built two years later. For decades, the monks cared for the land, supporting themselves through farming and candy sales. But their numbers gradually dwindled, and by the time of the sale, reportedly only five monks remained. Today, the compound still has a chapel, prayer areas, monks’ living quarters, a monastery building, and a retreat centre.Karp is an avid cross-country skier who reportedly trains 12 to 15 miles daily. A 3,700-acre property in the Elk Mountains is a fitting base for someone whose fitness regime is better described as vocational.Together, these properties are designed around a single principle: the right to be left alone. While Palantir may be strengthening the American national security, taking over Project Maven, the Pentagon’s AI drone analysis programme, powering surveillance systems used by ICE, the military and other local law enforcement agencies, the CEO wants to wind down alone at night. Karp has defended this work as essential to national security, arguing that democracies need tools powerful enough to compete with authoritarian adversaries. The company continues to expand its government footprint, competing for contracts including the FAA’s predictive air traffic AI system, and its stock has risen more than 600% since the start of 2024.
