A-Quadrat Architekten + Ingenieure GmbH
Neue Gröningerstraße 10
20457 Hamburg

Tel:       +49 (0)40 69 666 9999
Fax:      +49 (0)40 69 666 9970
E-Mail: info(at)

Ust. IdNr.: DE-291982550
Finanzamt: Hamburg-Mitte

Handelsregister B des Amtsgerichts Hamburg: Nr. HRB 129247.
Hamburgische Architektenkammer: Member no. HAK030521-GV00103.

Board of Directors
Architect Dipl.-Ing. Thomas Hölter
Member of the Hamburgische Architektenkammer, member no. 4508.

Architect Dipl.-Ing. René Schneiders
Member of the Hamburgische Architektenkammer, member no. 3862.

Legal status
Gesellschaft mit beschränkter Haftung, GmbH

For architectural services the following regulations are binding:
- das Hamburgische Architektengesetz (HmbArchtG) bei Hamburgische Architektenkammer, Grindelhof 40, 20146 Hamburg
- Honorarordnung für Architekten und Ingenieure (HOAI)


Insurance at the VHV Allgemeine Versicherung AG.
Coverlimit: 3.000.000 personel damage / 3.000.000 material damage.

Disclaimer of liability
Contentual responsible according to §10 section 3 MDStV: A-QUADRAT ARCHITEKTEN + INGENIEURE GMBH.

A-Quadrat Architekten + Ingenieure GmbH assumes no responsibility for the topicality, completeness, correctness or quality of the information provided. Liability claims against us, caused by the use or disuse of the information provided or by the use of incorrect and incomplete information, are excluded. The user alone is liable for any damage to own system resulting from the use. Despite careful content control, we assume no liability for the content of external links and external content. The content of the linked pages are the sole responsibility of their operators.
The use of is at own risk.

Text, photos, drawings, graphics, context and layout are subject to copyright.

Photos, unless marked otherwise: © A-Quadrat Architekten + Ingenieure GmbH
, unless marked otherwise: © VisualServices, Ralph Rieger

Concept and design

Webdesign and programming