Adelaide House is a two-storey structure with a timber frame, timber clad first floor and ground floor walls of stone.
The ground floor is surrounded by a wide verandah. Of particular importance is the cellar which is part of a unique cooling system. Adelaide House was conceptually designed as a hostel by John Flynn (1880-1951), a Presbyterian minister who was founder and Superintendent of the Australian Inland Mission of the Presbyterian Church in Australia and acknowledged as a founder of the Royal Flying Doctor Service. A particularly favourable fund raising effort in the City of Adelaide in 1919 was commemorated in the hostel's eventual name.
Caters for people with sufficient mobility to climb a few steps but who would benefit from fixtures to aid balance. (This includes people using walking frames and mobility aids) Caters for people who are deaf or have hearing loss. Caters for people who are blind or have vision loss.