The Gjøvik Line through Lunner opened on 20 December 1900. The southern part of the municipality was originally served by Harestua Station, a station situated at from Oslo. The Furumo area started receiving new single dwelling residential construction through the 1960s. With the construction of Furumo II and III, it became common for people to commute to the capital. The largest project was Furumo IV, where construction commenced in 1978. This was instrumental for NSB to decide to establish a second station at Harestua, to serve the new residential area. Furumo Station opened on 3 June 1984. The same day Viubråten Station, situated to the north, was closed. The original location of Furumo Station was at from Oslo S, and was in a curve. A 2012 report showed that there were about 600 people living within of Harestua Station and 900 within the same radius from Furumo. The old Furumo Station had 1,500 people living within. Furumo had 38,300 passengers per year while Harestua had 89,200. Part of the traffic to Harestua was generated by the good access to the wilderness. However, it was in poor technical condition and had a requirement to receive a new and longer platform. The Norwegian National Rail Administration therefore decided to merge the two stations and located it at a new site. This new site is planned as the new community and commercial center for Harestua. The passing loop would be retained at the old station, so the merger would not cut running times. Construction commenced in April 2012, when the old Furumo Station was closed and work on the new station could begin. the main contractor was Peab. In addition to a new platform, the work consists of of new county road, to culverts under the track, ramps allowing wheeled access the platform area, new parking places including a kiss and ride and a new waiting room. To install the culverts all train traffic past the stop had to cease. Total price for the project was 40 million Norwegian krone. The new Furumo Station opened on 9 December 2012 and the same day the old Harestua Station closed. The new station took the name Harestua on 15 December 2013.
Facilities
Harestua Station is situated on the Gjøvik Line, from Oslo Central Station, at an elevation of above mean sea level. The line past Høybråten is single track and electrified and the station does not have a passing loop. The station features a side platforms with a heated shed. The platform is long and tall. There are 95 parking spaces at the station, including charging stations for electric cars and disabled parking, a halt for buses and a kiss and ride. The station is built according to standards for accessibility. Harestua is predominetly residential area with a high proportion of commuters. In addition to these, the station also is located near an access point to the ski trail network of the Association for the Promotion of Skiing in Nordmarka, making it attractive to serve people for skiing outings.
Service
The station is served by lines L3 of Oslo Commuter Rail and R30 regional trains, both operated by NSB Gjøvikbanen using Class 69 trains. The lines operate every twice every two hours, with 40 and 80 minutes between departures. Both operate southwards to Oslo Central Station; L3 operates north to Jaren Station while R30 runs the entire length of the line to Gjøvik Station. Harestua is 44 minutes from Oslo S and 1 hour and 14 minutes from Gjøvik.
