1977 – 1986 studied at the Technical University in Braunschweig together

1984 – 1987 worked for Prof. Schürmann, Cologne, for the new-build Parliament Debating Chamber in Bonn

1988 founding of an office together, Cologne

1991 founding of BRT Architects, Hamburg

2001 founding of BRT Engineering GmbH, Hamburg, for general planning at home and abroad

2003 founding of Hadi Teherani AG for product design

2005 founding of BRT Design Group FZ LLC, Dubai

2005 co-operation BRT RUS, Moscow

2011 office relocated to the Lofts at Elbberg, Hamburg

2012 Hadi Teherani takes over the company shares of Jens Bothe and Kai Richter