Billionaires’ Alley: Zuckerberg Buys a Waterford Castle, and Ireland Asks What It Is Buying Into

The house is called Strancally. It stands three storeys above a bend in the River Blackwater in County Waterford, roughly 16,000 square feet of Gothic Revival stonework built around 1830 for John Keily, a Tory MP for Clonmel. Its architects, the brothers James and George Richard Pain, also gave Ireland Dromoland Castle and Cork County Gaol. It now belongs to Mark Zuckerberg.

The Irish Times broke the story on Thursday, reporting that the Meta chief executive and his wife, Priscilla Chan, had completed an off-market purchase of the castle and its 440-acre estate several weeks earlier. The sellers were Michael Alen-Buckley, a co-founder of the London investment firm RAB Capital, and his wife Giancarla, who had lived there for 25 years and undertook a substantial restoration after buying the property in 2001.

No price has been filed. The transaction does not appear on Ireland’s Property Price Register, and the Irish Times put a plausible range at €20 million to €30 million — roughly $23 million to $35 million — based on condition, acreage and comparable sales along the same river. A spokesman for Zuckerberg confirmed the deal on Thursday morning, saying the family is glad to continue caring for the historic house and looks forward to time in Ireland, where Meta keeps its international headquarters. The couple will go on living in the United States and use Strancally when in the country.

Why Waterford

The practical explanation is short. Meta has run its international headquarters from Dublin since 2009, employs around 1,500 people across offices in Dublin and Cork, and operates a data centre at Clonee in County Meath. Strancally sits about 200 kilometres from Dublin — a two-hour drive, or half an hour from Youghal.

The more interesting explanation is that Zuckerberg is not the first, or even the third, to make this calculation. He is the third technology billionaire to acquire a large Irish country estate since 2021. Stripe co-founder John Collison bought the 1,100-acre Abbey Leix estate in County Laois for around €20 million in 2021. James Dyson bought Ballynatray, a few miles down the same stretch of the Blackwater, for a reported €29 million in 2024. The Irish Independent has taken to calling the valley Billionaires’ Alley. Lismore Castle, Cappoquin House and Salterbridge are all within reach of the same river.

Zuckerberg’s interest in Irish land was public before this. The Wall Street Journal reported last summer that he had approached Liberty Media’s John Malone about buying the Castlemartin estate in County Kildare, and had been told it was not for sale.

Estate agents describe a market with genuine international pull. Savills recorded €267 million in prime country home sales across 194 transactions in Ireland during 2025, and attributes the appeal to political stability, secure property rights, available land — increasingly scarce elsewhere in Europe — and, quietly, a climate that looks more attractive each summer that southern Europe bakes.

The part that is not about architecture

Local reaction has been split rather than hostile. A Fine Gael councillor in Waterford, Niamh O’Donovan, welcomed the sale on straightforwardly practical grounds: the state was never going to take on a house like Strancally, and private money keeps it standing. Residents interviewed nearby offered a version of the same shrug — nobody quite knows what it will mean, and money arriving is rarely worse than money leaving.

The sharper criticism is about land rather than buildings. Heritage specialists have pointed out that new owners of these estates tend to want privacy above all, which in practice means closing land off. That matters for public access to historic sites, and it matters for how large landholdings get managed in a warming climate. There is also an older argument underneath it: Irish castles and great houses <cite index=”127-1″>were, as one heritage academic put it, symbols of “hatred and division”</cite> for generations of Irish people, which is precisely why they are not treated as ordinary private assets.

The timing has not helped. Zuckerberg’s purchase became public during a period in which Meta is defending itself in court over child safety and social media addiction — proceedings in which a whistleblower’s testimony has drawn considerable attention. A castle is a cheerful story; it landed in a week that was not.

Strancally itself carries an appropriately grim footnote. The present house stands in front of the ruin of an earlier Desmond castle, and local legend holds that occupants of the original fortress, founded in the 12th century by the Norman Raymond le Gros, once invited neighbouring landowners to a banquet and dropped them through a trapdoor into a flooded cave below.

The estate ran to 5,000 acres in the 1850s. The Irish Land Commission broke it up, leaving the house with 160. It comes to 440 today — and, for the first time in its history, an owner in Palo Alto.

Sources: The Irish Times; Reuters; RTÉ; The Journal.ie; TechCrunch; The Next Web; Business Insider; NBC News; Savills Prime Country House Market Report; National Built Heritage Service records.