Architect, designer, graphic artist. In 1913 he founded the Budapest Workshop. His early graphics were executed in Modem Style. In conjunction with the Kner Printing House, he renewed Hungarian book design (Kner Classics, Monumenta Literarum.) In furniture design he established a distinctive style characterized by reminiscences of Baroque, while in architecture, and especially in dwellinghouse architecture, he followed the tenets of Functionalism. He summed up his principles in the book Das neue Haus (Zurich, 1941).