 The site retains its curtilage from the early 1870s and the buildings are in the form known in 1899 following the completion of the Vice Regal additions with only minor alterations since.The Vice Regal contents are largely intact and clearly indicate the way the buildings were occupied and used.Hillview, including the site, buildings, gardens, archaeological features, fittings and contents has exceptional significance to the people of NSW as the former country home of the Governors of NSW.