By the 2010s the amount of traffic at Holmlia was so high that access to the platforms had become a bottleneck during rushhour. Holmlia had become one of the busiest commuter stations in the country. The Norwegian National Rail Administration therefore decided to also build an access structure to the northern side of the platforms. Another concern was to spread out passengers more throughout the platform to speed boarding times. The platform height was raised from to allow for step-free access to trains. The art stone which was previously located at the northern end was moved to the south, where the disused kiosk was moved. Meanwhile, Oslo Municipality expanded the overpass over the station, to give room for more space for buses. The new section was designed by Linje Arkitekter. The new facilities opened on 7 May 2012. The southern platform structures were renovated in 2016. As the superstructure is listed, the work largely consisted of retouching the existing design, as well as adding an elevator.