Who we are

Anchored in Switzerland and internationally active, WALO is managed as a family business in the 4th and 5th generation. For over 100 years, WALO has focused on the combination of consistency and innovation.


What we do

WALO is active as an innovative total solutions company in all markets of the construction industry. The family-owned company has established itself as a reliable partner in the construction industry and infrastructure projects in Switzerland and worldwide with its decades of experience and the permanent development of sustainable as well as economical solutions.



We have successfully implemented many challenging projects. Therefore, we proudly let our references speak for our work.



Whether residential, industrial, healthcare, outdoor or for sports and leisure facilities - seamless floor coverings have to meet a wide variety of requirements on a permanent basis.



Good buildings and thus satisfied customers require precise construction work. All our employees, from unskilled workers to engineers, play a key role in ensuring that we achieve this goal time and time again.


Energy refurbishment Telli, Aarau

Who doesn't know them. The characteristic silhouettes of the 4 terraced Telli high-rise buildings northeast of the city of Aarau. These were realized in the seventies of the last century in element construction.

Project description 

Two of the four blocks are owned by the AXA Investment Foundation. These blocks, Telli B with 220 residential units and Telli C with 361 residential units, are now to be brought up to the latest energy and fire protection standards. In addition, earthquake retrofitting measures and the renovation of the underground garages will be carried out. Walo Bertschinger AG carried out the following work for the project: 

Earthworks and uncovering of the ceilings of the underground garages and temporary bypasses (PZ 410), structural strengthening of the garage ceilings (PZ 250), bituminous sealing with wearing course (PZ 310). 



Approximately 2000 people live in these buildings. We are strictly required to comply with noise regulations and rest periods. We work directly on facades of bedrooms. In general, we are very prudent and sustainable care of the nature in this recreational area. 

Walo Bertschinger AG
Giessenstrasse 5
8953 Dietikon 1

Aarau, AG

Building Construction

Building time
March 2020 - August 2020 (main work BM) 

March 2021 - May 2021 (Backyards Telli C) 
Building sum

CHF 4'400'000 

Anteil Hochbau CHF 1'190'000 


AXA Anlagestiftung Winterthur 

Anlagegruppe AXA Immobilien Schweiz 

Affolternstrasse 42 

8050 Zürich 

Construction management

Drees & Sommer Schweiz AG 

Florine Geiser 

Civil engineer

Nänny + Partner AG 

Ralph Ehrbar 

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We appreciate your interest in the WALO Group and are happy to answer any questions you may have.