The council will look to introduce a lift at Teddington Station by 2020 to improve access for wheelchairs, prams and people with limited mobility.
The station currently lacks sufficient access and has been the target of campaigns from local groups and councillors to rectify this.
A lift will be installed on both platforms on either side of the footbridge pending planning permission.
Cllr Peter Buckwell, cabinet member for highways and street scene, said: “I am pleased that we can reassure residents and train station customers that the lifts are still a priority and the project is fully funded by Network Rail.
“We are hopeful that work will commence in the very near future.”
It was announced in 2014 that Teddington would be one of 26 stations across England to benefit from the Access for All funding, a £60 million Government pot aimed at improving accessibility at rail stations.