That Flintstone House in the San Francisco Bay Area is up for sale

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If you've ever driven along Highway 280 in the San Francisco Bay Area, you've probably seen this home.

It's for sale. The so-called "Flintstone House" in Hillsborough is one of Silicon Valley's more eccentric single-family dwellings. Architect William Nicholson designed and built the eccentric landmark in 1976.

It's a 3-bedroom, 2-bath property. The last time "Flintstone House" sold was in September 1996, for $800K. A lot has happened in the local economy since then. This time, the price is reported to be around $4.2 million clams.

From the Los Angeles Times:

During the 1980s the residence was called the "Barbapapa" house after the children's books of that name and a subsequent cartoon show. Other monikers have included the Dome House, the Gumby House and the Bubble House.

The unusual shape of the three-bedroom, two-bathroom house was created by molding wire around large balloons and then spraying the surface with gunite. There's 2,730 square feet of living space within the home's rounded exterior walls, which were originally white but were later painted orange. One dome is now purple.

The tallest part of the house contains an upstairs bedroom reached by a spiral staircase. Rocks were used in place of floor tile in the master bathroom.

[via SJ Merc, via Judy Meuschke]

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[All photos: Judy Meuschke, San Francisco and Peninsula Realtor.]