Facts & figures

Legal form

Public limited company, holding company


CHF 1.5 million (100% employee subscribed)


  • 126 electrical engineers
  • 126 HVAC and plumbing system engineers
  • 90 architects and researchers (energy, ecology, building physics, lighting, facility management)
  • 450 designers, technicians, construction specialists and assistants
  • 26 financial specialists, administrators and computer scientists
  • 82 apprentices

Total employees: 900

Membership of the following associations

SIA, USIC, SWKI, SLG, suissetec, IFMA Schweiz, IHS, Electrosuisse, VSEI, swisscleantech, Swissolar, VSS, FEZ, GNI, KNX Swiss, MeGA, NNBS, Piarc, SGA, swissgee, BAUEN DIGITAL SCHWEIZ


ISO 9001, ISO 50001 (Amstein + Walthert AG, Zurich)


Personal injury and property damage: CHF 20 million
Building and asset damage: CHF 5 million