On Friday, the Australian Bureau of Statistics (ABS) released its 2018-19 Australian System of National Accounts (ASNA) data release, which provides a detailed presentation of annual national accounts data.
Locked away on Table 61 is my favourite section of the release: data on aggregate land values at the state and national levels. This year’s release confirmed that, at a national level, the land values underpinning the Australian housing bubble deflated significantly when measured against GDP, lead by Victoria (Melbourne) and New South Wales (Sydney).
The below chart summarises Australia’s aggregate land values by use relative to Australia’s gross domestic product (GDP) since 1989, which is as far back as the data goes:
Whereas aggregate Australian Commercial and Rural land values have remained fairly stable over the past 26 years relative to GDP, residential land values skyrocketed, rising from 1.1 times GDP to a peak of just below 2.74 times GDP in 2016-17. However, Australian residential land values deflated in 2018-19 to 2.29-times GDP.
When the aggregate residential land values data is combined with the Reserve Bank of Australia’s (RBA) dwelling values data – which combines both residential land values and structures (buildings) – it becomes clearly evident that the uplift in Australia’s housing values over the past 20 years was due almost entirely to increasing land costs, rather than higher building costs (see below chart).
Whereas the structure values to GDP – calculated by deducting the ABS’ residential land value figures from the RBA’s dwelling assets data – was 0.89 times GDP in 1988-89, it is only 0.95 times GDP currently and has remained fairly stable throughout the entire 28-year period.
Not surprisingly, given the correction in land values, the total value of Australia’s housing stock (land plus structures) also retraced to 3.24-times GDP in 2018-19 from an an all-time high 3.67-times GDP in the 2016-17 financial year.
Reflecting the fact that residential land has risen in value relative to buildings, the land component of Australia’s housing stock rose from a low of 54% in 1990-91 to a peak of 74% of GDP in 2016-17, before declining to 68% of GDP in 2018-19:
The below chart tracks the change in nominal residential land values at the state and territory level over the 2018-19 financial year:
Not surprisingly, Victoria (Melbourne) and New South Wales (Sydney) drove the decline in aggregate land values, down 10.3% and 9.0% year-on-year.
Obviously, this data is only current to 30 June 2019, so it excludes the recent strong bounce in dwelling values: