Built in 1816, Cadmans Cottage is one of only a handful of Sydney buildings that remain from the first 30 years of the colony. Over the years this sandstone cottage has been a water transport headquarters, a sailors' home and a water police station, among other things. It used to be beside the water, but since the construction of Circular Quay the harbour has 'moved' 100 metres away.

Cadmans Cottage Historic Site is leased to Place Management NSW (its trading name is Placemaking NSW). It is the NSW Government owner and manager of the neighbouring heritage buildings at The Rocks.

Place Management NSW will ensure that the use of Cadmans Cottage is consistent with the objectives of the National Parks and Wildlife Act 1974 and Cadmans Cottage Historic Site Conservation Management Plan.