The Dorsch Gruppe thanks you for visiting this website and showing interest in our services.

Information on the company

This website is maintained by the Dorsch Holding GmbH. The legal representatives of Dorsch Holding GmbH is the following board of management: Dipl.-Ing. Olaf Hoffmann and Andreas Schweinar.

Registered office

Offenbach am Main, Germany
Trade reg. no.: HRB 42115 Offenbach am Main
Office premises: Frankfurt Airport Center 1, Hugo-Eckener-Ring, Geb. 234, HBK 43, 60549 Frankfurt am Main
Value Added Tax No.: DE247139650
Contact: mail(at)dorsch(dot)de · Fon: +49 (0) 89 57 97-0

Byelaws of the profession

Legal designation of profession: Dipl.-Ing., Dipl.-Ing (FH), granted in Germany (Consulting Engineers)

Honorarordnung für Architekten und Ingenieure (HOAI) vom 10. Juli 2013

Hessisches Ingenieurgesetz (IngG)

Hessische Bauordnung (HBO)

Verordnung über die Vergabe öffentlicher Aufträge (VgV)

Gesetz gegen Wettbewerbsbeschränkungen (GWB)

Verordnung über die Vergabe von öffentlichen Aufträgen im Bereich des Verkehrs, der Trinkwasserversorgung und der Energieversorgung (SektVO)

Further information concerning the byelaws can be obtained for example from the websites of the Bundesingenieurkammer or of the Bayerische Ingenieurekammer


© Copyright 2001-2018 Dorsch Holding GmbH

All rights reserved.

The text, images, graphics, sound files, animation files and video files and their arrangement on the Dorsch website are all subject to copyright (some copyrights for enclosed images may be held by third parties) and other intellectual property protection.

The content of this website may not be copied, distributed, modified or made available to third parties for commercial purposes.


This website was created with the utmost care. Nevertheless, no guarantee can be given for the correctness and accuracy of the information contained.

Any liability for damages arising directly or indirectly from the use of this website is excluded, unless they are based on intent or gross negligence.

If this website refers to websites operated by third parties, Dorsch Holding GmbH assumes no responsibility for their contents.

Concept, Design & Programming

mediatis AG
Münchener Straße 45
60329 Frankfurt am Main


Gerhard Habinger
Dorsch Gruppe