The DGNB (Deutsche Gesellschaft für Nachhaltiges Bauen e. V) (link: http://www.dgnb.de/_en/index.php) or the German Sustainable Building Council is a non-profit and non-governmental organization whose mission is to develop and promote ways and solutions for sustainable design, construction and management of buildings. The main task of the DGNB is awarding certificates for sustainable buildings.

When assessing a building, a total of six areas must be considered when planning and constructing a sustainable building:

  • Ecological quality
  • Economic quality
  • Socio-cultural quality
  • Technical quality
  • Process quality
  • Site quality

Each topic includes specific criteria to be fulfilled, depending on the system used (and depending on the building type - new or refurb). The  earlier these criteria are taken into account in the planning phase, the more consistent the  quality of the structure..