The residence is important for its association with several prominent architects who have contributed to the evolution of Government House; Benjamin Backhouse (1865), Richard Gailey (1880s) and the Department of Public Works (1937). The house also has important associations with several early successful settlers in Brisbane. Among these were John Heussler, who built the house in 1865 and was prominent both in business and public life in Queensland and John Stevenson, a pastoralist, stock and station agent and member of the Legislative Assembly, who epitomised the success of the 1880s boom time by changing an 1860s villa to an Italianate Mansion.