Therefore, in 1833 the D&KR raised a parliamentary bill so its railway could be extended beyond the East Pier with a new station at Kingstown, then on to Dalkey.

Thomas M. Gresham, a D&KR shareholder and main spokesperson for the opposition, being awarded a silver plate in August 1833 for the same at a personal cost of £1,200, was persuaded not to oppose the 1834 bill.

The line was a branch of the existing D&KR which diverged to the south when approaching from the west with an interchange platform[d] before the atmospheric ran as a single track eastbound into the tunnel.

[8] Grierson notes that the station build was completed in 1853 to a design by John Skipton Mulvany by Mr. Roberts doing the "masonry, carpentry, ironmongery, &c," for £1,665.

When they ran their first train into Kingstown on 10 October 1855, the D&KR directors refused them the use of the station and the passengers were forced to return towards Dalkey, this also happening for some days afterwards.

[13] Dargan converted the down line between Kingstown and Old Dun Leary harbour to dual gauge so the spoil could be dumped there.

[14] The D&WR converted their newly acquired line to 5 ft 3 in (1,600 mm) in the next year or so enabling through running.

A replacement station entrance, with a combined ticket office and automated barriers, was built above the railway lines at street level in 1998.

It was constructed with a steel framework supporting a taut sail-like canopy and with glazed panels as side features.

[citation needed] It was given the additional name "Mallin" on 10 April 1966, 50 years after the Easter Rising, when Córas Iompair Éireann renamed 15 major stations after Republican leaders.

[citation needed] The station is where the Killiney-Dún Laoghaire footpath "The Metals" (Ná Ráillí) ends.