Challis House

Challis House is located on land resumed by the Government in 1889 from W. H. Paling and the estates of Thomas Perkins and Thomas Holt as part of the scheme to establish an important public street to the north of the GPO, from Pitt to George Streets between Hunter and King Streets. Holt's land, to the east of the Tank Stream, had originally been granted to John Connell, a free settler in 1837. Connell had leased the land prior to the grant. Perkins' and Palings' land was located to the west of the Tank Stream. In 1807 the major portion of this area was under lease to William Jameson with the remainder vacant. By 1834 this area was owned by James Chisholm and Hugh MacDonald. By the 1870s the land was owned by Thomas Perkins.^[1][2]

The original building was constructed by Sydney University in 1906-7 under the supervision of Messers. Robertson and Marks with Walter Liberty Vernon, the NSW Government Architect, using funds from the Challis Bequest.

John Henry Challis (1806–1880), an English born merchant and philanthropist left a bequest of £276,000 to The University of Sydney. Upon construction, the building immediately assumed the function of a commercial city building that was closely linked with tourism due to the occupants of the lower floors being the Railways Ticketing Office and Government Tourist Bureau. In 1912, an additional room was constructed for the caretaker. The place was virtually reconstructed in 1936, with Hennessey and Hennessey appointed as architects, resulting a completely different facade, repaired in 1963 and refurbished in 1973, when the place underwent major redevelopment under the supervision of Edmund-Dykes, Coward and Chaplin. The building was internally gutted except for the elevators and fire stairs. Air conditioning was installed and a shopping arcade established in the former railway ticket offices fronting the plaza with a restaurant below the arcade.^[1][2]

Challis House is a 12/13 storey reinforced concrete framed structure with 1930s Art Deco style sandstone facades above a polished red granite base to Martin Place and Angel Place with, a bronze coloured mansard roof behind a parapet, and a loft tower to the eastern end. There are symmetrical, slightly recessed bays for floors 1–9 with large shopfront windows with bronze panels below to the ground floor. Windows to the upper floors are bronze coloured anodized aluminium framed.^[1][3]

The building is predominantly used for office space above ground floor level with retail travel offices and shops on the ground floor and a cocktail bar/nightclub in the basement. The building has the appearance of a 1990s interior refurbishment with some areas exhibiting even more recent fit outs. The original Challis House had a lower ground floor (below pavement level) in the eastern half of the building with a sub-basement below. The west side of the building had only a basement area (untenanted) below pavement level. When the building was reconstructed in 1936 it was increased in height, the structural framework was completely removed and replaced and the appearance of the building was totally altered. The present building exterior and structure essentially dates from 1937 although there are some elements that date from 1907. The 1974 internal refurbishment has removed all visible traces of the 1937 reconstruction. Since 1937, the most obvious external change to the building has been the addition of the mansard roof, although removal of the awning to the central entrance at ground level (to Martin Place), removal of original doors and window spandrels and the addition of new entrance steps.^[1][3]

As of December 2018^[update] Giorgio Armani was a ground-floor tenant in the building.