After 1894, the laboratories were demolished and the research station residence was converted into a dance hall, which still stands there, along with two summer houses and a gazebo constructed in the early 20th century. At this time, the island was managed by the Rodd Island Recreation Trust. Further changes were in the pipeline but never went ahead because of an outbreak of bubonic plague in Sydney in 1900. The Sydney Harbour Trust took over managing the island and they doubled its area by reclaiming land from the bay and constructing sea walls. Once the outbreak of the plague had finished, the island became a recreation area.