The department was established in 1876 with the appointment of John Turnbull Thomson as Surveyor-General. A major expansion took place in 1891 by combining the Department of the Surveyor-General and the Crown Lands Department into one agency. Its existence as an independent agency was consolidated with the passing of the Land Act 1892. Although the two agencies had merged, operationally they functioned separately until 1913. The minister responsible, from 1891, was the Minister of Lands. The head of the department initially held the titles of both preceding agencies as the Surveyor-General and Under-Secretary for Lands until 1906. The former post was subsumed by the latter before being renamed Director-General of Lands in 1949.
The Department of Lands and Survey main duties were administrating and managingCrown land, surveying and mapping, land development and area planning. The department also administered a number of Statutory Boards which dealt the administration and management of land.