Proposals for a new station building at Hayes & Harlington have been approved by Hillingdon Council
The new glass and steel structure is aimed to create a more visible station.
It will include a new footbridge and waiting room as well as longer platforms.
When Crossrail fully opens in 2019, Hayes & Harlington station will be served by up to 10 services an hour in each direction, allowing passengers to travel in and out of central London without having to change trains.
Journey times to Bond Street will be 15 minutes quicker, and those to Canary Wharf 17 minutes faster.
Crossrail surface director Matthew White said: “Crossrail will provide a step change in public transport for local people – better stations, new trains and faster journeys.
“The new building will properly reflect the importance of the station to the area and, together with the broader improvements, will make using the station a much more pleasant experience.”