He has for many years been responsible for Working Group HUS in Bergen. Tharaldsen has designed a number of notable buildings, including Steiner schools and kindergartens, which have attracted national and international attention. He has taught in architecture schools in Norway, Germany and the United States since 1992 and has received government guaranteed income for artists. In 2010 he published a book in Norwegian on Rudolf Steiner's Aesthetics. In 2012 this book was published by the German publishing house Freies Geistesleben with the title Die Verwandlung des Alltags. Über Rudolf Steiners Ästhetik.