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](/typo3temp/assets/_processed_/e/9/csm_dummy-portrait-image_ebbf395d0d.png)
![Tobias Fischer](/typo3temp/assets/_processed_/e/9/csm_dummy-portrait-image_ebbf395d0d.png)
![Joachim Hirschner](/filestorages/address_images/_processed_/2/e/csm_5278_2856c8eb47.jpg)
Joachim Hirschner
IWTI GmbH, Institut für wirtschaftliches und technisches Immobilienmanagement
![Thorsten Huff](/filestorages/address_images/_processed_/e/2/csm_8130_634cdfc639.jpg)
![Thomas Lechner](/typo3temp/assets/_processed_/e/9/csm_dummy-portrait-image_ebbf395d0d.png)
Your contact
![Markus Kelzenberg](/filestorages/address_images/_processed_/a/a/csm_58838_559f874d6f.jpg)