Supervisor Malia Cohen and Mayor Ed Lee this week said a Sausalito real estate investor, who bought the century-old, two-story, wood-paneled building at 66 Raymond Ave. at auction last year, will transfer it free of charge to the city in the coming weeks. “This is a tremendous asset that has served generations of Visitacion Valley residents,” Cohen said at a Thursday news conference attended by dozens of elderly, Chinese residents who have been playing mahjong in the building over the past year despite its lack of power or water and general state of disrepair.