What is G-NAF?
G-NAF (Geocoded National Address File) is recognised as the most requested high-value dataset. It contains address data including the state, suburb, street, number and coordinate reference (or “geocode”) for street addresses in Australia.
What makes G-NAF unique is the rich data associated with each address including the linking of official addresses with in-use addresses, linkages to other datasets including ABS data and rankings based on input from multiple contributors.
G-NAF does not contain any personal information or details relating to an individual or business.
Where do the addresses in G-NAF come from?
PSMA receives over 30 million addresses each quarter from 10 contributors, including state and territory government land agencies and Commonwealth sources.
What does G-NAF look like?
PSMA makes G-NAF available in a zip file of to 3GB in size, containing more than 30 tables of address data that need to be uploaded into a relational database to form a national dataset.
How frequently is G-NAF updated?
G-NAF has a quarterly update release cycle occurring in February, May, August and November each year.
What is a G-NAF Address?
G-NAF contains addresses for physical locations. For an address to be included in G-NAF, it must meet pre-defined criteria for what constitutes a valid address, for example, addresses with no street numbers are not usually included in G-NAF.
What is the coverage of G-NAF addresses?
G-NAF contains addresses for all states and territories of Australia including external localities such as Christmas Island, Cocos (Keeling) Islands and Norfolk Island.
How many addresses are there in G-NAF?
There are 14.6 million addresses in G-NAF. More than 50,000 addresses are added each release.
Should I expect a building at all addresses in G-NAF?
No. An address does not necessarily mean there will be a building there. Addresses are used to not only label land parcels, properties and buildings, they’re also used for locating a variety of assets such as ATMs, tree plantations, reserves, parks and utility substations.
Can I add or change an address, street or locality in G-NAF?
G-NAF is produced from data provided to PSMA by contributor organisations. If you would like to add or change an address, you will need to contact your local government or state land agency.
Can I get an address removed from G-NAF?
G-NAF is produced from data provided to PSMA by contributor organisations. If you would like an address removed from address records, you will need to contact your local government or state land agency.
Does G-NAF contain personal information?
No. G-NAF only contains address information. It does not contain any personal information or details relating to an individual or business.
How long does it take for new addresses, streets or localities to appear in G-NAF?
Addresses are created or changed by various authorities. These addresses need to make their way through the relevant processes, including various levels of government, before they reach PSMA as a contribution to G-NAF.
PSMA receives addresses from contributors on an ongoing basis and feeds them through a 13 week production process.
The cyclical production process means the currency of an address can vary between 2 months to 6 months upon the release of G-NAF.
G-NAF meets the market need for rich data about addresses that enable detailed analysis and informed decision-making. If address currency is important, you may wish to consider G-NAF Live, a web service of the latest addresses from our jurisdictional suppliers that is updated by PSMA on a daily basis.
Is the persistent identifier (PID) for an address always “persistent” throughout the life of the address?
In most cases, yes. Exceptions relate to when there is a significant change to an address. In such cases, the address record will be retired and a new record (with a new PID) will be entered. Changes to any of the following parts of an address may lead to a change in the PID:
- Flat number
- Street number
- Street name or type
- Locality name
Once an address persistent identifier (PID) has been retired can the same number be reissued?
No. A retired PID should never reappear in G-NAF. Even if the same address is returned to use, a new PID will be applied.
Why isn’t an address showing in G-NAF?
An address not appearing in G-NAF may be the result of any of the processes at either the contributor or PSMA end of production.
If you would like to check the inclusion or exclusion of an address, please contact your local government or state land agency.
My mail is not being delivered correctly. Can you fix this?
No. G-NAF contains addresses for physical locations, not postal locations. Please contact Australia Post to confirm your address is correctly recognised by the mailing system.
How can I get access to G-NAF?
There are two ways to access G-NAF:
- PSMA wholesales the product to our network of value-added resellers and integrators who take G-NAF to market as a raw dataset, as part of a software solution or part of an integrated solution, including consultancy, to tailor the product to your specific requirements.
- The Australia Government releases G-NAF, along with PSMA’s Administrative Boundaries, under open data terms through data.gov.au.
Are previous releases of G-NAF available?
Previous releases may be obtained from PSMA partners.
Should I use G-NAF?
PSMA cannot advise whether G-NAF will meet your specific requirement.
We can advise that every address in G-NAF is contributed by an organisation that manages this information as part of their ongoing core business. You can be sure all addresses included in G-NAF are ‘in use’. However, G-NAF does not contain information that will confirm if a house or some other form of building / structure exists at that location.
G-NAF does assign a confidence level to each address. The level is based on the number of contributors that agree on the attributes of the address. The confidence levels are:
2 – The details of an address have been matched with two other sources (ie. three contributors all agree).
1 – The details of an address have been matched with one other source (ie. two contributors agree).
0 – The details of an address do not match with any other source (but are still valid within one contributor’s data).
-1 – The address no longer appears in any contributor’s data. An address record will retain this status for up to four releases. If it is not re-validated in a subsequent contribution, the address will be retired.
Where can I get help with G-NAF?
PSMA partners provide a range of commercial products based on G-NAF including off-the-shelf and bespoke software solutions, consultancy and support.
Who is the authority for addresses in Australia?
In most cases, there is no one primary custodian of addressing in Australia. The validation and authorisation of an address generally rests with local governments or other government departments that manage land with general input from property developers. The state/territory jurisdiction land agencies have a responsibility to collate and keep a concise record of all addresses, but only in their jurisdiction. There is no federal legislation to form a consistent specification of addressing nationally.