A spokesperson for Mark Zuckerberg and Priscilla Chan confirmed that the couple sold one of their San Francisco homes for $31 million in an off-market transaction.

According to Zillow this is one of the biggest sale.

The 7,386-square-foot home, built in1928, has four bedrooms and four bathrooms and is located on the outskirts of the city's Mission District and Dolores Heights neighbourhoods.

According to PropertyShark records, the 38-year-old Facebook co-founder and his wife,37, purchased the home in 2012 for just under $10 million through a California-based limited liability company, SFRP.

Salaam, the Chan Zuckerberg Initiative's vice president of operations, signed a grant deed between the seller and the buyer on SFRP's behalf.

The home was about 1,800 square feet smaller when the couple bought it ten years ago, and its sale price likely set a record for the Mission District at a time when San Francisco was seeing the early signs of a tech takeover, according to The Wall Street Journal at the time.

They paid $53 million for nearly 600 acres of land on the Hawaiian island of Kauai in March, according to Mansion Global. This increased their total holdings on the Hawaiian island to more than 1,300 acres.

Furthermore, the Silicon Valley home where Mr. Zuckerberg and other Facebook co-founders launched the social media platform was listed for nearly $5.3 million in May.

A few weeks after it was listed, the price was reduced to just under $5 million, and it was removed from the market earlier this month.

Mansion Global was unable to identify the buyer further, but Michael M. Gordon, a director at the Wilmington law firm Gordon, Fournaris and Mammarella, was listed as the LLC's contact.