How many buildings in Australia? Geoscape achieves national coverage.

Geoscape® has achieved national coverage.

With the October 2018 Release of Geoscape, we’ve mapped every building with a roof area greater than nine square metres across the entire Australian continent. That’s 15,243,669 buildings across 7.6 million square kilometres.

Geoscape is a digital representation of Australia’s built environment. It’s our ‘buildings census’. We’ve counted them, recorded their attributes and mapped them to an address. And packaged that into an analytics-ready dataset.

Geoscape now provides location-based insights at a level of detail, and on a scale, never seen before. We’ve produced Australia’s Geocoded National Address File (G-NAF) for years. Now we can tell you what’s at an address.

An additional 740,554 buildings were added to Geoscape in Release 8, an increase of 5.11 per cent on the previous release, across all Australian states and territories except for the Australian Capital Territory.

National statistics as at Release 8 of Geoscape, October 2018

Geoscape combines high-resolution satellite imagery from commercial Earth observation firm, DigitalGlobe, a Maxar company, crowdsourcing, machine learning and big data processing. It captures building attributes including 2D and 3D building footprints, heights, elevation, roof complexity and material, solar panels, and nearby swimming pools and trees.

Geoscape also has linkages to other authoritative data including geocoded addresses, property data and administrative boundaries.

Data attributes captured by Geoscape

In addition to buildings, Geoscape has captured all surface cover across Australia – at two-metre resolution in urban areas and remote communities and at 30-metre resolution across the whole of the country. Geoscape also includes tree canopy heights in urban areas and remote communities.

Australia’s Surface Cover (at 30-metre resolution) as captured by Geoscape

Geoscape was a bold vision. And we’ve realised it. You can download a sample of the dataset to explore the possibilities for yourself.

What’s next for Geoscape?

We always intended for Geoscape to reflect changes in the built environment over time.

With coverage of Australia complete, Geoscape goes into update phase. We’ll recapture and update at least 5000 square kilometres across Australia each year, focussing on urban areas and remote communities where there is a high degree of change in the built environment. We’ll also update all Surface Cover at two-metre resolution each year in areas deemed to be urban.

The first update is scheduled for early 2019. Continue to check the Geoscape website for details.

As Australia changes, so must Geoscape.

1 Other Territories.

2 ‘Urban’ describes areas with a population greater than 200 or with significant industrial or commercial activity, with no known cultural or accessibility sensitivities.

3 Rural’ describes areas not defined as ‘Urban’ or ‘Remote Communities’.

4 Remote communities’ are areas with a population greater than 200 or with significant industrial or commercial activity, with known cultural or accessibility sensitivities.

5 The number of solar panels and swimming pools detected in areas deemed to be ‘urban’.

6 Area covered with cloud on date of collection.

7 Area covered with shadow on date/time of collection.

8 Total surface cover shown extends beyond Australia’s land mass to include some coastal waters.