On Monday Housing NSW published the latest set of housing related statistics – median rents and median sale prices - for postcodes in the Greater Metropolitan Region as well as for Local Government Areas. The information value of this dataset can be greatly enhanced by presenting it on a thematic map. For example, mapping median values allows to highlight the distribution of costly and less expensive areas within the largest capital city in Australia. And the picture is quite interesting… Explore by clicking on coloured polygons!
Sydney Median Prices Jun'11 by Postcode
Sydney Median Rents Sep'11 by Postcode
YoY Change in Median Prices Jun'11
Although this dataset does not attract any media headlines, it can prove quite invaluable for those hunting for a house (to buy or to rent), or for research into housing affordability and alleged property prices exuberance. Its main limitation is timeliness since sales stats refer to June quarter (so, are at least 5 months old) but rental stats are as current as you can get (ie. cover the latest September quarter). The main advantage of this dataset is that, unlike widely publicised median prices that relate to entire cities, it contains information on what is happening within small neighbourhoods around the city. The only housing related information I am aware of that covers small neighbourhoods and is published on a map, is Property Investment Map from domain.com.au
The maps above are the result of a quick exercise in matching attribute data (ie. Housing NSW data distributed in non-spatial format) with spatial boundaries (ie. ABS Postal Areas, 2011 edition), and presenting it visually using Google’s Fusion Tables and Google Map API. And although I haven’t put much effort into defining ranges in a more scientific way, they give a pretty good picture of what is happening with rental and property prices around the city.
Maps and property investment
WA housing affordability index