In June 2007 HOCHTIEF became one of the founding members of the German Sustainable Building Council (DGNB). The council is made up, among others, of architects, investors, contractors and scientists. The organization aims to consistently promote sustainable construction and operation of building structures in Germany and create sustainable living spaces.

2009 the DGNB Certification System was launched in Germany. The certificate covers the essential aspects of sustainable building: ecology, economics, sociocultural and functional aspects, technology, processes, and site. If the building fulfills the criteria, it receives the DGNB certificate in gold, silver, or bronze. A total of eleven buildings constructed by HOCHTIEF in Germany have gained German DGNB precertification or certification (as of 31.12.2010). more