O&O Baukunst
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.

Christian Heuchel
Born in 1966, studied architecture in Karlsruhe. Graduate of the Baukunstklasse of the Kunstakademie Düsseldorf. Member of the O &O office since 2000. Lectures in ‘Art and Architecture’ at the Kunstakademie Düsseldorf. Headed the Cologne office from 2006.

Florian Matzker
Born in 1966, studied architecture in Berlin, has worked in the O & O office since 1996, managing partner since 2011.

Roland Duda
Born in 1966, studied architecture in Berlin. Has worked in the O & O office since 1996, since 2011 managing partner.

Markus Penell
Born in 1965, studied architecture as well as town and regional planning in Berlin. Member of the O & O staff since 1966, has headed the Berlin office since 2001, managing partner since 2011.

Laurids Ortner
Studied architecture at the Vienna University of Technology (TU Wien).Co-founded the architect and artist group Haus-Rucker-Co in Vienna in 1967. Professor at the University of Art and Industrial Design in Linz from 1976–87. 1987-2011, Professor of architecture at the Art Academy Düsseldorf.

Manfred Ortner
Studied painting and art education at the Academy of Fine Arts Vienna. From 1971–87 Atelier Haus-Rucker-Co in Düsseldorf with Günter Zamp Kelp and Laurids Ortner. 1994-2012, Professor of Design at the architectural school FH Potsdam.