The station was built in 1865. Its design is in the Italianate style, with an extremely decorative frontage and French pavilion roofs. After a fire in 1980 the building was renovated and restored. In John Cary's map of 1786 the area is shown as Dulwich Hill. The only building apparent is the "Fox under the Hill". The present "Fox on the Hill" pub is situated a hundred yards or so further up the hill, on the site of former St Matthew's Vicarage adjacent to a triangular patch of land rumoured to be a "plague pit" or burial ground. The name of the area was changed to Denmark Hill in honour of the husband of Queen Anne, Prince George of Denmark, who lived there. The area is home of the Maudsley Hospital and King's College Hospital, and also of Ruskin Park, named after John Ruskin, who once lived nearby. The preface to Ruskin's "Unto This Last" is dated "Denmark Hill, 10th May, 1862". The Institute of Psychiatry is based behind the Maudsley Hospital, a school of King's College London (University of London). The college also has a hall of residence in Champion Hill. The Salvation Army's William Booth Memorial Training College on Champion Park which was designed by Giles Gilbert Scott was completed in 1932; it towers over South London. It has a similar monumental impressiveness to Gilbert Scott's other South London buildings, Battersea Power Station and Bankside Power Station (now housing Tate Modern).
The platforms are below road level, with the short Grove Tunnel at one end and Denmark Hill road bridge at the other. In the period 2011-2013 the station underwent a redesign with the construction of a new ticket office with access from Champion Park, new walkways and lifts to the platforms. Platform 1 : services to Clapham Junction (London Overground) and London Victoria (Southeastern). Platform 2 : services to Dartford via Bexleyheath (Southeastern) and Highbury & Islington (London Overground). Platform 3 : services to West Hampstead Thameslink / London Blackfriars (Thameslink) and London Victoria (Southeastern). Platform 4 : services to Sevenoaks via Catford (Thameslink) and Dover Priory via Bromley South and Chatham (Southeastern). As of August 2013 the station is fully accessible with lifts to all the platforms. The station is in Travelcard Zone 2 and has help points, cash machines, boarding ramps, a bridge, payphones, and lifts but no toilets.
Connections: National Rail. Thameslink. London Buses routes 50, 88, 155, 322, 345 and P5 and night route N155 serve the station.