Andersson was formerly with Fin Juhl, Copenhagen. By 1962 he was the Head of Peddle, Thorp and Walker's Design Unit. By 1965, he established his own practice in Sydney. He designed the Prestige Lighting Showroom, the interiors of the Lyceum Theatre, de George's Dress Shop and the Crest Hotel, Kings Cross. In 1969, Andersson was developing designs for Jarvis Coates's furniture manufacturers.