The Office of State Revenue (OSR) is part of State Treasury and are responsible for collecting state taxes, stamp duty and other royalties.
Phone: 1300 300 734
Overseas: + 61 7 3227 6044
Phone: 02 9689 6200
Overseas: + 61 2 9689 6200
The land titles office is the State authority who manage that particular state natural resources.
Queensland Department of Natural Resources and Mines - https://www.dnrm.qld.gov.au/
NSW Land and Property Information - http://www.lpi.nsw.gov.au/
Victoria Department of Environment, Land and Water Planning - http://www.dtpli.vic.gov.au/property-and-land-titles