In the same manner as the DGNB and BNB system, the valuation system was also developed in the work group sustainable residential construction of the round table Sustainable Building of the former Federal Ministry of Transport, Building and Urban Affairs. The associations of the real estate and housing industry, companies of the housing industry as well as research facilities were a part of this work group. The system provider is the association for promoting sustainability in housing (NaWoh). The valuation of the residential properties is based on 7 superordinate groups:
NaWoh – Verein zur Förderung der Nachhaltigkeit im Wohnungsbau e.V.
BMUB – Bundesministerium für Umwelt, Naturschutz, Bau und Reaktorsicherheit