Lower Beechmont is situated on the northern extent of the Lamington Plateau formed by the Lismore/Beechmont Basalt flow from the Tweed Volcano, a large shield volcano. Beechmont Range, a prominent spur of the McPherson Range which runs through the locality roughly north to south, was created by the erosion of the volcanic shield by the Nerang and Coomera Rivers, and forms the divide between the north and south catchment areas of the Gold Coast hinterland.