The route chosen for the Green Line re-used the old Harcourt Street alignment between Charlemont and Stillorgan.

After Sandyford, the line diverges from the old Harcourt Street route in order to serve some more populous areas on the Ballyogan Road, and re-joins it just before Carrickmines.

On the side adjacent to the former Stillorgan reservoir, there is an edge platform used for trams coming from the north and continuing to Brides Glen.

The main entrance is a series of steps and ramps which lead from a plaza at the side of the adjacent Blackthorn Avenue to passenger crossings across the tracks.

In addition, a pathway leads from the side platform, past the depot, to Brewery Road, adjacent to the old station building, which remains a private residence.

[citation needed] The stop has a Park and Ride facility with 47 spaces, of which 4 are for disabled badge holders and 2 allow for the charging of electric vehicles.

In addition, the car park at Stillorgan stop has 341 spaces, some of which are physically closer to the platforms at Sandyford.

In addition, Go-Ahead Ireland routes S8 and 114 serve the stop, providing connections with Marlay Park, Ballinteer, Dún Laoghaire and Blackrock.