The Administrator's House is a substantial, two storey residence, with a semi-detached service and servants wing, surrounded by a well developed garden. The residence is sited in a prominent location looking across Flying Fish Cove and can be seen from various vantage points on the higher terraces. The style and location of the residence appears to have been designed to emphasise the eminence of the Administrator. In 1965 the ground floor exterior doorways which had timber arches and lattice work infill were altered, the arches were bricked and the lattice work replaced by glass with etched patterns resembling the earlier lattice work. A portico was also added with a balcony above it. Upstairs windows, which were wood shuttered, were glazed. Immediately to the north of the Administrator's House stand a number of ammunition bunkers and a gun emplacement which still contains a naval gun. The complex also contains accommodation and support buildings including a gaol. On the cliff, approximately above the gun, is an observation post and ranging station. The ruins of a Japanese washhouse is reported to be beyond the gun emplacement. The gun emplacement was built before World War II for the installation of the 6inch naval gun and a detachment of troops was stationed there. In March 1942 the detachment mutinied on the eve of the Japanese occupation of the island and several officers were killed. The occupying Japanese later took control of the site for the duration of the war. , the house served as a museum documenting the history of Christmas Island. The wider house precinct, including the former ammunition bunkers, gun emplacement and observation post and ranging station just to the north of the house, are also included in the heritage listing.
Condition
The Administrator's House was extensively remodelled in 1965 although the service area is little altered from its original form. The gun emplacement complex is intact despite the post war conversion of the ammunition bunkers to provide servants' quarters and other support functions for the Administrator's House.
Heritage listing
The Administrators House Precinct was listed on the Australian Commonwealth Heritage List on 22 June 2004. The Administrator's House is a historic reminder and symbol of colonial rule of Christmas Island, when it was incorporated into the Straits Settlement of Singapore and has been the focus for official duties and functions. The imposing scale of the residence and its location in a prominent position looking across Flying Fish Cove emphasises the previous social importance of the Administrator and provides an important visual focal point from several other parts of the settlement. The gun emplacement and ammunition bunkers have historical significance as a reminder of earlier military threats to the Island and through their direct association with the 1942 mutiny and the subsequent Japanese invasion of the Island.