Innovative partner for consulting, planning, construction and operation

The leading European consulting, planning and project management enterprise, Drees & Sommer has supported private and public clients and investors for 50 years in all aspects of real estate and infrastructure – both analog and digital. Through future-oriented consulting, the enterprise can offer solutions for successful buildings, high-return portfolios, powerful infrastructure and livable cities. The company’s 4,500 employees in 51 locations around the world work in interdisciplinary teams to provide support for clients from a wide variety of sectors. All the services provided by the partner-run company take into consideration both economic and ecological concerns. Drees & Sommer calls this holistic approach ‘the blue way’.


"the blue way"

‘the blue way’ is the approach that Drees & Sommer takes to all services. Combining economy and ecology and thus reducing investment and operating costs while enhancing functionality and process quality – as well as taking design, health, well-being and user-friendliness into account – are the goals for all projects. Only in this way can value-add be secured for the principal over the entire life cycle of the property.

Company Organization

The Drees & Sommer Group is characterized by a flexible, decentralized company structure and a corporate philosophy that puts people first. For over four decades the company has developed and pioneered innovations in every phase of its history. 

The Aktiengesellschaft (stock corporation) comprises 40 active Partners who, together with former Partners and employees, are the shareholders of Drees & Sommer SE. This allows the Group to operate independently of third parties and to provide unbiased consulting to clients. As Managing Directors, the Partners are responsible for the operational units as independent entrepreneurs.

In their Managing Director roles in regional offices, the Partners operate as independent entrepreneurs. Partners Dierk Mutschler and Steffen Szeidl form the Executive Board. Prof. Dr. Hans Sommer is Chairman of the Supervisory Board.


More than 4,500




€ 24.1 billio


€ 72.2 billion

574.5 million € Group sales 2021
68.8 million € Operating result 2021
5,173 Number of construction projects 2021

Aachen, Berlin, Bremen, Dortmund, Dresden, Düsseldorf, Erfurt, Frankfurt, Freiburg, Hamburg, Hanover, Karlsruhe, Kiel, Cologne, Leipzig, Magdeburg, Mannheim, Munich, Münster, Nürnberg, Potsdam, Stuttgart and Ulm


Abu Dhabi, Amsterdam, Atlanta, Basel, Bern, Brussels, Budapest, Dubai, Eindhoven, Copenhagen, Lausanne, London, Madrid, Milan, Munsbach/Luxembourg, Paris, Riyadh, Shanghai, Thessaloniki, Warsaw, Vienna, Linz, Zurich