The first station at Slependen was located 270 meters (890 ft) further west and opened on 11 September 1873, a year after the Drammen Line.

With the doubling of the Drammen Line, Slependen was rebuilt 90 meters (300 ft) to the east, still on a curve, as an elevated station.

The Drammen Line through Slependen opened as a narrow gauge railway on 7 October 1872.

[1] The third station at Slependen was constructed as part of the double-tracking of the Drammen Line between Sandvika and Asker.

Designed by Ina Becker of NSB Arkitektkontor, it receive an island platform and was built over a road, from where the access to the station came.

The station building filled the entire width of the platform and was therefore located at the end.

The polished concrete building featured a flat roof and slate cornice.

NSB had just ordered new center cars for their Class 69 commuter trains and a double set would therefore exceed the platform length.

Access to the platform from the steep side is via a rotunda, which features a circular ramp and stairs.