PSMA's GNAF system 

http://www.psma.com.au/products/gnaf.cfm

According to the PSMA website:
"G-NAF® (Geocoded National Address File) is Australia’s first authoritative geocoded address index for the whole country, listing all valid physical addresses in Australia. It contains approximately 12.6 million physical addresses, each linked to its unique geocode (that is, the specific latitude and longitude of the address). Data used to build G-NAF® comes from contributors that include the Australian Electoral Commission, Australia Post, state, territory and Australian Government mapping agencies and land registries.

G-NAF® is the single, national authoritative source for:

* validating customer-provided addresses (assisting in fraud prevention)
* identifying the geocode for spatial analysis (creating maps to plot and analyse services and customer locations), and
* assembling and maintaining large address files (reducing duplication and costs, increasing efficiency and improving mail delivery)."

Enabling access to this dataset would facilitate the linking of georeferenced information (datasets, reports, etc.) to relevant locations for mapping and research purposes.