 Hillview is of significance in its relationship to Government House Sydney and other Government houses and country retreats throughout Australia.It is the most intact Government summer residence to survive and provides insights into the lives and lifestyles of the Governors that is not seen at Government House Sydney.Hillview through the buildings, furnishings, gardens and archaeological potential has the ability to reveal new information about the broader history and development of NSW due to the intact form of most parts of the assemblage from its Government occupation.