Mark Zuckerberg Strancally Castle purchase in Ireland, Digi Mart USA News (County Waterford, Ireland): Meta’s Mark Zuckerberg paid €51.2 million, approximately $57 million, for Strancally Castle in County Waterford. That price did not include the surrounding 440-acre estate.
Ireland’s wealthiest homebuyers rarely make purchases on that scale. An analysis of the Property Price Register found an average of just 10 sales above €5 million, approximately $5.6 million, a year across the country.
Ireland’s prime housing segment typically covers prices of €5 million to €8 million, approximately $5.6 million to $8.9 million, according to The Irish Times. Sales above that range are classified as super-prime.
School-aged children and existing ties to Ireland are common among buyers, who tend to be in their 40s, according to David Johnson, principal of Inhous, an agency based in London and Dublin. Johnson has worked with buyers arriving from Hong Kong, London, Australia, the United Arab Emirates and the United States, with wealth drawn from sports, entertainment, gaming, pharmaceuticals and finance.
Stephen Day, a senior director at Lisney Sotheby’s International Realty, cited clients from Florida buying homes in Ireland as summer heat becomes too intense in their home state. Since the COVID-19 pandemic, access to the coast has become a higher priority for prime buyers, according to The Irish Times, and seaside homes have increasingly competed with established high-end addresses in Dublin 4 and Dublin 6.
The Property Price Register recorded 19 sales above €5 million in 2022, nine of them in coastal areas, mostly around Dublin, with one in County Cork. The highest recorded sale that year was St Kilda in Sandycove, which sold for €12.5 million, approximately $13.92 million, with the sea just beyond its gardens.
In 2025, Seagrange, a five-bedroom villa-style residence with sea views in Sandycove, topped recorded sales at €9.6 million, approximately $10.3 million, below its €10 million, approximately $11.1 million, asking price. Day suggested that intensifying European heatwaves could bring more wealthy buyers to Ireland.
Barbara Carty, head of clients at Inhous Dublin, told The Irish Times that one parent often commutes or works abroad for part of the year while the family remains in Ireland during school terms. Ireland’s education system is a significant draw, with private schools perceived as better value than those in London.
Many returning Irish buyers have spent more than 30 years overseas and pay for their homes in cash.
Breffnie O’Kelly, a Dublin-based selling agent, said her clients tend to be over 45, have made their money in America and plan to spend a few months each year in Ireland. Some want assets outside the United States, and many use their Irish homes as a base for European travel.
“It’s more a lifestyle treat for themselves rather than that they’re moving here lock, stock and barrel,” O’Kelly said, according to The Irish Times.
Zuckerberg is not the only billionaire spending heavily on real estate. In Florida, Larry Ellison bought eight homes to build a neighborhood for staff.
In New York’s Hamptons, buyers are paying oceanfront prices for inland estates. SkyMall’s founder listed an Arizona mountain retreat with an 18,952-square-foot lodge for $9.5 million.
