The house is designed in a classic style, fuses elements of classic Greek architecture with the simple lines of Georgian style. Other buildings in the garden combine classic Greek features with Chinese-inspired elements. For example the pavilion beside the grass tennis court called The Tea House (built in 1927) has the look of a Chinese pagoda (particularly in its roof and colouring) but also sports Greek Doric inspired columns. Motifs decorating the building are of bats and peaches, elephants and dragons. Elsewhere a Moongate is found, a traditional element of Chinese gardens.

Eryldene is administered by the Eryldene Trust, a public company formed in 1979. It has a board of governors comprising of nominees of Ku-ring-gai Council, the Australian Camellia Research Society and the International Camellia Society.