About us

We want to satisfy the increasing demand for solutions which are not just optimised from an energy and economic point of view but also from an ecological point of view, by providing future-oriented services. As a consulting office we enjoy a good reputation throughout the whole of Switzerland and France. As an innovative team for ecology in the construction industry, integral planning, energy concepts, as well as building operation and maintenance concepts based on sustainability.


Amstein + Walthert SAS
9 rue du Lac
F-69003 Lyon

Phone +33 4 78 95 29 69