Since midday train service on the Georgetown corridor was first launched in May 2002, GO Transit has hired various contractors to improve the station.

First, the station was made wheelchair-accessible by building an additional pedestrian tunnel and a pair of elevators, completed in January 2003.

In August of that year, construction began of a new rail platform, which was required to provide an all-day train service for the station, as the station is located on a busy railway corridor used by Canadian National Railways freight trains bypassing Toronto.

[citation needed] To accommodate future increases in ridership, a new 650-space parking lot was opened in June 2005 on the south side of the tracks.

[2] To support GO expansion plans for more frequent and reliable service on the Kitchener line, Bramalea station has undergone major improvements, including a new station building linked to a parking garage, a new passenger pick-up and drop-off area, improved bus platforms for GO Transit and Brampton Transit, with a dedicated Züm bus stop, covered bike parking, new retail spaces, improved access to Bramalea Road, a new accessible pedestrian tunnel at the west end of the station, enhanced safety features including new emergency call systems and upgraded lighting, platform improvements with a snow-melt system, and an extended platform to accommodate 12-car trains.