The core activity of Dennler Bau und Holz encompasses the following areas: Excavation and earthworks (civil engineering, excavation, backfilling, pipeline and trenching work, demolition); Garden and environmental design (garden design, new installations and modifications, walls, forecourts, paths and forest trails); Carpentry and logging (carpentry, garden carpentry, tree felling, firewood, processing and sales). The company thus offers a combination of construction, garden and wood services.