The core activity of Keller + Steiner AG encompasses various services in the construction sector, particularly: construction scaffolding, surveying (building measurement, height surveys, crack measurement, construction surveying), drafting office (creation of plans, support for building submissions and execution plans), wall and floor coverings, living spaces (turnkey residential and commercial spaces), geomonitoring, and owner support and evidence securing. The company thus offers a comprehensive range of services for the construction and real estate sector.