The blue house in French singer Maxime Le Forestier’s song San Francisco is situated at 3841 18th Street in the Mission district. The song, on his 1972 album Mon frère, recalls a time when he lived in the house in 1970 when it was a hippie commune called Hunga Dunga. It was repainted from light green to the original blue in 2011 and Le Forestier attended to apply the final ceremonial brush stroke, and a plaque placed outside reads:
In 1970, Maxime Le Forestier was inspired by this blue house and composed one of his signature songs “San Francisco”