In over 85 years of experience, the alpha zentaur group has developed into what it is today: a complex corporate structure that covers several areas of responsibility in the field of real estate.

• 2022
  Foundation of the greek subsidiary Alpha Kentavros Real Estate S.A.
• 2021
  Foundation of the subsidiary TAFF Immobilien Investment AG | Acquisition of QT AG by alpha zentaur immobilien ag
• 2020
  The alpha zentaur group comes into being. Its members are zadik architekten ag, alpha zentaur immobilien ag and QT AG.
• 2019
  Capital transfer and creation of the current parent-subsidiary relationship. Change of name of the parent company to alpha zentaur immobilien ag and change of name of the subsidiary to zadik architekten ag
• 2018
  Change of the company name to zadik architekten ag | Foundation of the general contractor Quadriga Tectones AG (QT AG)
• 2017
  Change of the company domicile and moving into the current, company-owned office premises and change of the company name to albrecht zadik architekten ag
• 2012
  Change of the company name to rutschmann albrecht zadik architekten ag
• 2010
  Closing of the office in Bülach
• 2009
  Takeover of the company by W.U. Sigg and Toros Zadik and change of the company name to rutschmann sigg zadik architekten ag
• 2000
  Opening of an office in Bülach
• 1998
  Change of the company name to Hans Rutschmann Architekten AG
• 1983
  Conversion of the previous sole proprietorship into a public limited company
• 1973
  Takeover of the office by Hans Rutschmann
• 1970
  Entry of son Hans Rutschmann
• 1935
  Foundation by David Rutschmann