Pincus, 48, has seen his net worth drop considerably in the last year as Zynga Inc (NASDAQ:ZNGA) stock has been nearly halved in value. Last year, he was on the Forbes 400 list at nearly $2 billion this year he didn’t find himself on the list along with another 130-odd billionaires. But I’m still comfortable guessing he doesn’t exactly need the money.

Zynga Inc's Pincus Puts SF Home On The Market For $18M

Listing it unstaged

The house is surprisingly unstaged which is a bit ironic given that his wife Alison co-founded a flash site for home decor, One Kings Lane. That choice, however, may simply be a result of wanting to accomadate more people at the open house that will be held on Sunday. Or simply because he doesn’t believe the house needs rugs and furniture to sell and it hasn’t been lived in for some time.

The couple bought the 11,500-square-foot mansion on Pacific Avenue two years ago for $16 million and are looking for a bit of profit apparently with the listing price. The house was built in 1907 and has seven bedrooms in addition to six full and four half-bathrooms. The Dutch Colonial Revival house is on the “Gold Coast” of San Francisco with its Pacific Avenue address and features views of the Golden Gate Bridge, Alcatraz Island, Mount Tamalpais and the Marin Headlands from its perch in the Pacific Heights neighborhood.

“It’s very unique to have a home of this caliber and location, and to have this open,” says Maximillian Armour, the Coldwell Banker Previews agent who won the listing along with fellow agent Malin Giddings. “It’s a unique opportunity to have people come and see it.”

Pincus’s San Francisco home: Additional features

The house is also equipped with two kitchens (one service, one full) a workout room, six fireplace and an elevator.

The house was commissioned Virginia Whiting Newhall, wife of Edwin W. Newhall, a wealthy entrepreneur after the 1906 earthquake that left her questioning her safety in her Victorian home and wanted something more sturdily built. It was designed by architect Albert L. Farr.