5. October 2021

Completion of the residential building in Oberwil bei Zug

The eight newly constructed apartments in the residential building were successfully handed over and occupied.



15. June 2020Building permit received for residential development Hammergut in Zufikon/AG

Eight apartment houses are being built with 64 owner-occupied flats.





1. September 2019Wiederkehr Antosch Architekten wins competition triple sports hall Sternmatt 2 in Baar/ZG

Forty renowned teams entered the anonymous project competition as part of a pre-qualification process.

Ten projects were assessed by the jury.


1. July 2019Change of owner, management and name change

Ladies and Gentlemen

Dear Colleagues and Friends


The architectural office Wiederkehr Krummenacher Architekten AG will be called Wiederkehr Antosch Architekten AG as of 1 July 2019. The office will be run by Wolfgang Antosch and Alphons Wiederkehr as owners and management. Our long-time employee Felix Möller will also join the executive management team. Rolf Wiederkehr and Georg Krummenacher will retire, but will remain with the office in an advisory capacity.


The change means securing the future of our company and thus the continued continuation of our proven corporate strategy. Maintaining the previous philosophy and quality is an obligation for us.


We can look back with pleasure and satisfaction on over 70 years of existence of our architectural office, a time in which a large number of clients placed their great trust in us and in which we were able to plan and realize an equally large number of buildings.


We would like to take this opportunity to thank our clients, planners, contractors, our employees and friends for their loyal cooperation.


Kind regards


Wolfgang Antosch   Alphons Wiederkehr