Certification Committee

Get to know our experts on the committee

The Certification Committee advises the Executive Board of the DGNB on current issues relating to the auditing and certification process with respect to the practical application of the DGNB System.

Thorsten Bleyer

ennac GmbH

Tobias Fischer

Drees & Sommer SE

Joachim Hirschner

IWTI GmbH, Institut für wirtschaftliches und technisches Immobilienmanagement

Thorsten Huff


Thomas Lechner

Transsolar Energietechnik GmbH


Your contact

Markus Kelzenberg

Director Certification Body