Situated on Transperth's Yanchep line, the station consists of two side platforms within a cutting below a ground-level concourse, with a bus interchange.

[2][3] Eglinton station consists of two 150-metre-long (490 ft) side platforms sunk into a cutting.

[5] West of the station is the bus interchange with eight stands, and north-west is a car park[4] with 392 bays.

[4][6] On the ceiling and entry screens are art pieces by Ian Mutch called World Around Us and Rhythm in Nature respectively, which consist of fabricated aluminium powder coated to look like Grevillea preissii plants and western xenica butterflies.

[20] In December 2019, the main contract for the Yanchep Rail Extension and the Thornlie–Cockburn Link was awarded to the NEWest Alliance, a joint venture of CPB Contractors and Downer Group.

The closure was originally meant to take nine months, but it was extended due to "additional works to accommodate utility services, the widening of Pipidinny Road, and challenging ground conditions impeding bridge works".

[34] By March 2024, the building's structure was complete, with work focusing on tiling and internal fit-out.

[36][37][38] After the May 2023 state budget, the government said that the Yanchep extension "is due for completion at the end of 2023, with services commencing in the new year".

[39] At the end of 2023, the Yanchep extension was still under construction and services were planned to commence in the first half of 2024.

[42][47] Eglinton station is served by the Yanchep line on the Transperth network.

A train journey from Eglinton to Perth Underground takes approximately 45 minutes.