We are an internationally operating architectural practice with roots in Vorarlberg. We focus our architecture on the respectful use of resources, the development of socially balanced spaces and the appreciation of the cultural and architectural context. Since our founding, we have played a pioneering role in modern timber construction. Today, the office is managed by Helmut Dietrich, Much Untertrifaller, Dominik Philipp and Patrick Stremler and employs an international team of over 120 people at locations in Austria (Bregenz and Vienna), Switzerland (St. Gallen), France (Paris) and Germany (Munich).


The entire spectrum ranging from large-scale buildings and urban structures through alterations of existing buildings to single-family homes defies specialization, constantly challenges and inspires creativity and an inquiring mind. Our international projects we often realise together with local offices and regional partners.


A decisive factor in all our work is the resource-saving and appropriate use of materials, with a particular commitment to contemporary timber construction. We are well known for our expertise in design and construction and maintain this knowhow through relationships of dialogue and trust with clients, craftsmen and engineers. In course of lectures and in teaching we are glad to share our knowledge.


Our innovative and sustainable buildings received numerous awards, including the Wiener Wohnbaupreis 2019 / Vienna Housing Award (Residential complex In der Wiesen Süd, Vienna), the Prix National de la Construction Bois 2017 (Sports Center Alice Milliat Lyon) and the State Award for Architecture and Sustainability 2017 (Elementary School Edlach, Dornbirn).

Our Projects
Dietrich | Untertrifaller Videos
Dietrich | Untertrifaller Offices
Dietrich | Untertrifaller
Bregenz, Austria
Dietrich | Untertrifaller
+49897411 8880
Munich, Germany
Dietrich | Untertrifaller
Vienna, Austria