Contact us

State Development Corporation of Thuringia (LEG Thüringen)

Dept. Investment, International Business and Cluster Promotion

Mainzerhofstraße 12
99084 Erfurt
Phone: +49 (0) 361 5603-450
Fax: +49 (0) 361 5603-328
write an email

Sachverständigenbüro projektRAUM
Dr.-Ing. Volker K. Drusche

  • email: v.drusche(at)
  • Internet:
  • Legal representative: Herr Dr.-Ing. Volker K. Drusche (Inhaber)
  • Contact: Herr Dr.-Ing. Volker K. Drusche (Inhaber)
  • Employees (Thuringia): 1

Location information

  • Location:
    Amselweg 3
    D-99423 Weimar
  • District:
    Stadt Weimar


- Energy consulting and energy planning for private persons, trade and institutions – energy certificates for buildings, thermal insulation certificates – climate protection and sustainability concepts – expert reports, expert opinions and preservation of evidence in the specialized areas of thermal insulation, humidity protection, hygiene of interior rooms/mould, real estate assessment – architectural services for construction projects which are ambitious in terms of energy efficiency

R&D focus:

- Thermal insulation – climate protection – sustainability

Further information:

- Founding partner in the Energy Efficiency Institute in Weimar – specialist books: ENERGIE SYNERGIE, WOHNRAUMSCHIMMEL


- Cert. energy consultants dena, BAFA, TAB-ThEGA, RKW – members of the Thuringian Chamber of Architects and of the Thuringian Energy Agency – energy efficiency expert for funding programmes of KfW promotion at the Bauhaus University in Weimar

Subsidy consulting

We will be glad to advise you on available investment subsidies, participations and guarantees.


Individual, competent, non-bureaucratic and flexible.