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Upgrading of the Energy Efficiency of Telli Quarter Buildings in Aarau, Switzerland

Drees & Sommer Switzerland and architecture firm Meili Peter & Partner formed a joint venture and were commissioned to plan the energy upgrade of buildings B and C in the Telli quarter of the Swiss town of Aarau. As the general planner, Drees & Sommer Switzerland performs the role of overall project manager on this major construction project.

Added Value

  • Structured project management, taking into account the client’s objectives

Project data


AXA Investment Managers Schweiz AG

Architecture firm:

Meili, Peter & Partner Architekten AG

Project term planning:

March 2016 - December 2020

Project term implementation:

February 2020 - April 2023

Total costs:

CHF 185 million

Basic parameters

  • 24 buildings
  • 581 apartments
  • approximately 1,000 residents
  • Approximately 1,000 parking spaces in the underground parking garage
  • The façade area being replaced is equivalent to three soccer pitches
  • 1,800 façade elements
  • 1,200 doors
  • 9.5 kilometers of balcony railing


Individual Services

  • General planning
  • Invitation to tender/contract award
  • Project monitoring
  • Lean construction management (LCM)



Location map