Built in 1917 by the British Admiralty, His Majesty Wireless Station served as a radio relay unit for iceberg tracking following the disastrous sinking of the Titanic in April 1912. During the Great War it served as an intercept station, intercepting transmissions of the German Navy which was carrying out overt operations along the North Atlantic seaboard. It was manned by a crew of 22 Royal Navy officers and sailors. It was sold in 1927 to Heber Parsons who converted the wireless station into a farm house while the three 305 foot towers were used by the newly formed VONF radio station. In 1967 the property was again sold this time as a housing development aptly named Admiralty Wood.

The city of Mount Pearl acquired the old wireless station to rehabilitate and restore as a community facility. Now known as Admiralty House work began to the designs of William MacCallum, architect. The exterior work consisted of a new roof, clapboard and the restoration of the large veranda. The wing that originally housed the commander of the station was stripped revealing an original chimney and fireplace, and a mantel was found to replicate the original. During this time the interior walls were found to be built of wattle and daub a method of wall construction consisting of branches or reeds roughly plastered over.

The interior roof trusses bearing the inscription RN, for the Royal Navy were exposed opening the interior which is now used as display space. Restoration refurbishment was carried out under the supervision of Master Carpenter Howard Roberts. Admiralty House was the city of Mount Pearl's Cabot 500 project and during the Royal Visit, Prince Philip officially opened the newly renovated structure.