references objects Colonus

„Colonus” is a registered brand. Licensed under Register of DPA No. 302012007028

We are certified according DIN ISO 9001 within the ZSD e.V. by DESAG Zert.

We are members of Bundesverband Freier Sachverständiger BVFS e.V. registered under No. 3720/2223 in building services an process engineering discipline.

We are also members of DVP (Deutscher Verband für Projektmanagement in der Bau- und Immobilienwirtschaft e. V.).