FAKT as a name represents the aim of finding a clear, defining answer to each project. We are interested in architecture as the possibility of making definite projects. As a growing team of architects, we share the strong will to build houses, objects and ideas. Our projects are approached with a consideration of system, reference, place and precedent.
FAKT was founded in 2013. All four founding partners – Sebastian Ernst, Sebastian Kern, Martin Tessarz and Jonas Tratz – studied together at certain times and collaborated in several offices before founding their own practice. The Berlin-based office is working on a broad range from small-scale furniture to construction projects as well as academic work.
D – 12247 Berlin
tel +49 (0)30 560 400 20
fax +49 (0)30 560 400 20
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FAKT – Office for Architecture
Ernst, Kern, Tessarz, Tratz GbR
SEBASTIAN ERNST, M.Sc. ETH Arch.
Sebastian Ernst, born in Berlin, studied architecture at TU Berlin and at the Swiss Federal Institute of Technology (ETH Zurich). After working for Barkow Leibinger he freelanced for several firms. He worked as student assistant at the chair of Prof. Ute Frank at TU Berlin, for Christ Gantenbein and Kees Christiaanse at ETHZ as well as being a researcher at the FutureCitiesLab in Singapore. 2013-14 he worked as professor assistant for the chair of Gramazio Kohler at ETH Zurich. In 2013 he is one of four co-founders of FAKT. 2015-16 he also was teaching as professor assistant for Prof. Georg Augustin at Uni Kassel. In 2018 he was teaching as Visiting professor at the University of Trento, holding the Chair of excellence „Adalberto Libera“. He currently teaches a 2nd year Masters studio at DIA Dessau.
SEBASTIAN KERN, M.Sc. ETH Arch.
Sebastian Kern, born in Berlin, studied architecture at TU Berlin and at the Swiss Federal Institute of Technology (ETH Zurich). He was able to achieve working experience by interning and working on a freelance basis for several Berlin based offices including Zanderroth Architekten. In 2012 he worked as a student assistant for the chair of Emanuel Christ and Christoph Gantenbein at ETH Zurich. In 2013 Sebastian Kern got his diploma thesis from a final project with Peter Märkli and is one of four co-founders of FAKT. He is registered in the Architektenkammer Berlin since 22nd of January 2016.
MARTIN TESSARZ, M.Sc. ETH Arch.
Martin Tessarz, born in Erfurt, studied architecture at TU Berlin and at the Swiss Federal Institute of Technology (ETH Zurich). After work experience in several Architecture offices in Berlin, Amsterdam and Los Angeles, including Staab Architekten, Johnston Marklee and Wiel Arets Architects, he worked as a researcher at the ETH FutureCitiesLab in Singapore. In 2013 he is one of four co-founders of FAKT. He was teaching as professor assistant at Uni Kassel, 2015-18 for the chair of Prof. Georg Augustin and currently teaches at the Technical University of Berlin.
JONAS TRATZ, M.Sc. Arch.
Jonas Tratz, born in Berlin 1988, studied Architecture at TU Berlin, at EAPLV Paris and at the École polytechnique fédérale de Lausanne (EPFL). His Bachelor thesis in 2010 got awarded the 1st price Baunetz Award. His further studies were supported with a scholarship from Studienstiftung des deutschen Volkes. Besides working as a student assistant for the Chair of Prof. Finn Geipel he also gained work experience in several offices, including Mila and LIN architectes. In 2013 he is one of four co-founders of FAKT. He currently also teaches a 1st year Masters studio at DIA Dessau (2017-2019). In 2018 he was teaching as Visiting professor at the University of Trento, holding the Chair of excellence „Adalberto Libera“.
Dipl.-Ing. Rodrigo del Castillo, Oksana Chebina
Julian Brack, Luis Druschke, Hanna Kosharna, Dorothea Velde, Manon Coppens, Miguel Jiménez, Helene Peters, Nora Zoppi, Oliver Alunovic, Jolene Lee, Claudia Borroni, Polina Moskalenko, Max Linnenschmidt, Esteban Lamm, Johanna Grau, Cecilia Ambrois, Sebastian Weindauer, Francelle Cane, Adeline Chimento, Stella-Marie Krex, Giulia Albarello, Mara Nuyens, Fabian Pfitzinger, Loukia Lhomme