Bull's building has been demolished, while Flor's and Kristiansen's have been listed as heritage sites.

[1] The first station building was a simple wooden structure designed by Georg Andreas Bull.

This required the rebuilding of 1.2 kilometers (0.75 mi) of the Drammen Line past Hvalstad.

It also required the moving of the station, about 200 meters (660 ft) parallel to the tracks to the southwest.

[5] The line past Hvalstad was electrified on 30 August 1922,[1] and the station received an interlocking system on 20 September 1929.

[5] NSB Arkitektkontor carried out the design of the new station and Julie Kristiansen was the architect for Hvalstad.

Similar to Billingstad and Slependen, Hvalstad was rebuilt as an elevated station with an underpass for traffic and access from below.

[4] The line past the station received automatic train stop and centralized traffic control on 12 and 14 December 1993, respectively.

It was built to solely serve local traffic and lacks any cargo or other advanced features.

It features detailed wooden decors over the oval gable windows and doors.

Flor's because of its intricate and aesthetic design, while Kristiansen has been listed as a representative of the simple, concrete elevated stations built during the 1950s.