The lack of common appreciation of modern architectural space by all in-habitants but a few has stirred a controversy between a few architects (LeCorbusier. Stevens) and a few painters in 1925. Despite a personal inter-est in wall painting by several architects no one did pay attention to thewarnings by F. Leger that architecture would ruin its reputation if it wereto loose touch with popular taste. Fifty years later large scale rehabilita-tion of mass produced modern architecture has shown this warning to beright.Bernard Lassus has been asked by a social housing manager to improve thistenants' environment through a step by step process. He hoped that coloringfacades would enliven the environment. Bernard Lassus is a painter. YetInstead of turning to F. Leger's teachings he choose to take a personal studyof working class inprovements of their housing environment as a startingpoint for an understanding of folk culture and aesthetics. This has proven tobe much at variance with several tenets of modern architecture aesthetics.This paper will provide further explanation about the approach of urbanlandscape creation that Bernard Lassus has chosen in this context. It doesprovide In effect an unexpected contribution to the history of contemporarypainting.