Your success is our claim.


Constantin Decker GmbH

Constantin Decker, MBA
Managing Director
Certified Leadership and Personality Coach
Real Estate Specialist (IHK/EBZ)

Phone: +49 511 850 33477
E-mail :contact@constantindecker.com


Ernststra├če 19
30559 Hanover

Sales tax ID


Competent supervisory authority according to ┬ž 34c GewO

IHK Hannover
Schiffgraben 49
30175 Hannover

Hanover Local Court HRB 224029

Dispute resolution

Online dispute resolution pursuant to Article 14 (1) ODR Regulation:
The European Commission provides a platform for online dispute resolution (OS), which you can find at http://ec.europa.eu/consumers/odr .

We do not participate in dispute resolution proceedings before a consumer arbitration board.


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Design & Realization