The late tech billionaire Darwin Deason first put his oceanfront estate in La Jolla, California, nicknamed the Sand Castle, on the market for an impressive $108 million in 2024 before he died in September 2025.
Deason, who sold his IT and business process outsourcing company Affiliated Computer Services to Xerox for $6.4 billion in 2009, initially spent about $26 million on the house and an adjacent parcel of land, according to the Wall Street Journal.
Over about six years, Deason poured an additional $60 million into transforming the property into a breathtaking 13,000-square-foot mansion, drawing inspiration from Versailles and the Hotel du Cap-Eden-Roc, a five-star retreat for celebrities in the South of France.
The estate includes a seven-bedroom main house and a three-bedroom guest house, with 14 full bathrooms and three half-bathrooms. It also features a pool, two cabanas, a fitness center, and an elevated, private beach with sand Deason imported from the Augusta, Georgia, golf course where the famed Masters tournament is played.
The property took a price cut in February and is now listed at $92.5 million.
If the property sells anywhere near its listing price, it will more than double the San Diego County record of $44.1 million set by billionaire Egon Durban in 2023.
Deason was worth $1.3 billion before he died, according to Forbes.
