Meta CEO Mark Zuckerberg has purchased a $23M–$35M Irish castle, adding to a portfolio that includes a $270M Hawaii compound, a Miami waterfront mansion, and properties in Palo Alto, San Francisco, Lake Tahoe, and Washington, D.C.
Alpha Score of 53 reflects moderate overall profile with poor momentum, weak value, strong quality, moderate sentiment.
Mark Zuckerberg has spent more than $100 million on real estate across the U.S. and now in Europe. His latest purchase is a 200-year-old castle in Waterford County, Ireland, his first international property.
A spokesperson for Zuckerberg confirmed the deal to Business Insider. Brian Baker said in an email that the family is "excited to continue caring for this historic home and look forward to spending time in Ireland, where Meta maintains its international headquarters." The purchase price is undisclosed. The Irish Times estimates it at 20 million to 30 million euros, or $23 million to $35 million.
The castle, named Strancally Castle, sits on 440 acres. It was built between 1825 and 1835. Zuckerberg bought it from the co-founder of RAB Capital, a London-based private investment firm.
Zuckerberg's U.S. portfolio includes five homes in Palo Alto's Crescent Park neighborhood, near Meta's Menlo Park headquarters. He spent over $43 million on four homes surrounding his original residence there, The Wall Street Journal reported. The original home, described by Architectural Digest as "no frills," was shown in a 2016 video that included a custom AI assistant, according to CNBC.
In San Francisco, he and his wife Priscilla Chan bought a four-bedroom townhouse near Dolores Park for $10 million in 2010. In Lake Tahoe, tax records show two properties – Carousel Estate and Brushwood Estate – linked to Zuckerberg. Brushwood Estate is 5,322 square feet with six bedrooms, a guesthouse, and a private dock.
Zuckerberg's largest holding is on the Hawaiian island of Kauai. Business Insider tracked at least 1,200 acres across 17 parcels, owned through LLCs including Kahu'aina Holdings and Pila'a International. About 750 acres cost him $100 million in 2014. Another 600 acres on the North Shore cost roughly $53 million in 2021. On one parcel, he is building Koolau Ranch, a compound that includes a 5,000-square-foot underground bunker with an escape hatch. Wired reported the total cost at an estimated $270 million.
In Washington, D.C., Politico reported that Zuckerberg bought a mansion in Massachusetts Avenue Heights for $23 million in cash. The home sits on about one acre and was designed by Robert Gurney Architect. Business Insider could not independently confirm that purchase.
In Miami, Zuckerberg is said to be buying a waterfront mansion on Indian Creek, an exclusive island home to Jeff Bezos, Carl Icahn, and Jared Kushner, according to The Wall Street Journal. The off-market deal price is unclear. An empty lot next door to Bezos sold for $105 million in 2025.
The Ireland castle purchase adds a European base for the Meta CEO, whose net worth is $192.4 billion, per Forbes. The castle is about 140 miles south of Meta's Dublin headquarters.
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