The Flintstone House is a free-form, single-family residence in Hillsborough, California,[1] overlooking and easily seen from the Doran Memorial Bridge carrying Interstate 280 over San Mateo Creek.

[5] Built on a concrete slab foundation, the residence was constructed by spraying shotcrete onto steel rebar and wire mesh frames over inflated aeronautical balloons.

[7] It has approximately 2,700 sq ft (250 m2) of living space including three bedrooms, one accessed via a spiral staircase inspired by an ice cream cone that at the top is the same diameter as the room, and two bathrooms, and has a two-car garage.

[12] Tsui's original concept for the remodel, including a proposed complementary second residence on the property, is detailed in depth on his earlier site.

[16] In late 2017, the new owners installed large oxidized steel sculptures of dinosaurs, a woolly mammoth, a giraffe, and Fred Flintstone in the yard.