© R. Steiner
1987 founding of the architecture office Ortner Architekten in Düsseldorf. Since 1990 Ortner & Ortner Baukunst in Vienna; since 1994 in Berlin, and since 2006 in Cologne. Since 2011 O&O Baukunst with the partners Roland Duda, Christian Heuchel, Florian Matzker, Markus Penell. 2011 O&O Depot Berlin.
Competences: Architecture | Interior Design | Urban Planning