Patricia Merkel presents in this study for the first time a detailed account of the work of architect Ernst Neufert (1900-1986) within the context of architectural history. The focus is particularly on Neufert's formative years between 1920 and 1940 in Weimar, Dessau, and Berlin, the birthplaces of the New Building movement. The author explores the conditions that contributed to his achievements as an architect, especially in his early work, as well as his roles as a university lecturer and author. She reveals unknown connections to influences, teachers, and clients, as well as to contemporary architectural events involving figures such as Walter Gropius, Johannes Itten, Otto Bartning, Cornelis van Eesteren, Wilhelm Wagenfeld, or Carl and Karl Benscheidt. For the first time, a comprehensive and annotated catalog of works is also available, featuring an illustrated overview of the buildings and thus providing a biographical account of his work.