This famous home in the upscale San Francisco Bay area city of Hillsborough rises out of the landscape like a vision both primeval and futurist. Last listed in 2015 for $4.2 million, it was recently relisted at $3.195 million.

Looking a little like it was drafted during a particularly meaningful peyote experience, the home was constructed using methods as unorthodox as its overall design: concrete was sprayed over frames of aeronautical balloons, rebar, and mesh. The interior walls and ceilings are stucco. Floors are generally tile.

The house is a fairly remarkable surviving example of 1970’s back-to-the-land aesthetics, which championed off-the-cuff functional invention and regarded highly personal home design as paramount. Entirely free-form, with a whitewashed interior and multiple skylights, the home is bright and very engaging; walking through it, you never know what is around the next corner. The living area ‘conversation pit,’ with kiva fireplace, is especially pleasant. Evoking biological forms, the house truly looks home grown inside and out, and opens to the surrounding landscape at every opportunity, establishing connection with its most direct influences.

The house measures 2,730 square feet, and contains three bedrooms and two baths. The property extends across about two acres overlooking Crystal Springs Reservoir.

The house’s previous owner called it home for about twenty years. She contributed many interior flourishes, as well as the existing exterior color scheme.