Lommedalen includes wooded areas, some agricultural land, and residential zones. It includes parts of the forest area Krokskogen. The river Lomma runs through the valley. The lake Burudvannet, which is a popular bathing place, is also located in the area. A forest road from Lommedalen goes to Hole in Buskerud. The pilgrim road to Nidaros Cathedral in Trondheim passed through Lommedalen in medieval times and was recently resurrected in celebration of the 1000-year anniversary of Trondheim in 1997.
Lommedalen is a popular area for skiing in winter time and horse back riding in summer time. It is also home to two golf courses, Lommedalen Golf Club and Bærum Golf Club.