Consulting, design and management of infrastructures


Drees & Sommer has been assisting clients in the public and private sectors for several decades in the initiation, design and implementation of infrastructure projects. In this sector, the public interest is particularly high: this makes it necessary to implement the project with great care.

During the potential analysis, feasibility study and project evaluation phase, we take into account the profitability and legal compliance requirements of the owner and other project partners. By comparing different implementation options at an early stage, we create a secure environment. Our experience is based on a large number of successful projects in setting up project organisations and structures, processes and tools.

In a second step, we translate the findings from the analyses and feasibility studies into an overall concept or system concept. With our Project Management, we support the owners in the implementation of their projects, especially in line construction sites. We ensure smooth logistics, optimise construction times and limit the impact of disturbances. We constantly monitor compliance with health, safety and environmental standards. If we have to manage several projects in the same portfolio or investment programme at the same time, we use our specific tools and processes for managing multi-projects or programmes. We manage the awarding of contracts and ensure that the legal procedures relating to public procurement are respected through rigorous management of permits. We also allow specific funding structures (e.g. public grants) to join the project at an early stage and support you in your application for support through specific financial control, grant control and control of the release of funds.

Thanks to our contract and amendment management and our proactive risk management, we are able to warn you at an early stage about the dangers of delays, cost overruns or possible disputes and help you to avoid or reduce them as far as possible. The careful monitoring of project risks ensures you alternative options throughout the project, which is an essential prerequisite for any decision. 

In public-private partnership projects, we use our expertise to support you in all the necessary preliminary investigations and in the technical and economic definition of the projects, as well as in the contracting and project implementation stages. We then act as technical advisors and ensure that the funds are used correctly.


  • Analysis of potential, feasibility studies
  • Project evaluation (360° analysis)
  • Organisation and process consulting
  • General plan
  • Infrastructure systems plan
  • Project Management, site logistics
  • Multi-project and programme management
  • Health-Safety-Environment Coordination
  • Contract award procedure
  • Permit management
  • Financial and grants audit
  • Management of contracts, amendments and risk management
  • Public-private project consulting and monitoring



We conduct in-depth analyses and develop concepts that serve as a solid basis for your projects. We guarantee professional monitoring of the basic procedures for awarding contracts and obtaining permits, financing, design and construction. We ensure that the project is carried out in accordance with the original framework.


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