From 1890 to 1918, he was an instructor in building construction at Christiania Technical School (Christiania tekniske skole), while working as an independent architect in Christiania. He worked mainly in his hometown and Skien. He shared responsibility for the Norwegian contribution to the 1893 World's Columbian Exposition in Chicago.[5][6]
He is most associated with his work on Tostrup Yard (Tostrupgården), a business premises on Karl Johans Gate in Oslo. The structure was designed by architects Christian Fürst, Torolf Prytz, and Waldemar Hansteen and built between 1896 and 1898. The five-story building was one of the oldest in Norway with load-bearing structures in steel. It was also among the first to have an elevator and use electric lighting.[7][8]