Swiss Society of Engineers and Architects (SIA)

The Swiss Society of Engineers and Architects (SIA: Schweizerischer Ingenieur- und Architektenverein) is Switzerland’s leading professional association for specialists in construction, engineering, technology, and the environment. It operates as a national, interdisciplinary network structured into regional sections, professional groups, and numerous expert committees. The organization represents member interests, supports knowledge exchange, and engages in education, policy, and industry coordination across the Swiss built environment. SIA’s core output is its body of standards and technical documents—covering construction, planning, and sustainability—developed through expert commissions and widely used across Switzerland’s building sector.