Danika Wright, University of Sydney
In the next couple of weeks you’ll start to see all the signs of the change of season. Like many Sydneysiders, I’m looking forward to the longer hours of sunshine and flowers blossoming.
Inevitably, and unfortunately, we’re about to see an increase in property spruikers declaring “The main selling season is here!” (2012) “The market is poised for a bumper spring!” (2013), “There’ll be a strong surge in the traditional spring selling season!” (2014).
The chart below shows why:
The thing is, though, it’s just a marketing gimmick.
Yes, the house price index appears to increase a lot more, on average, in spring. But so does the sales volume. Why would people knowingly jump into the housing market at the seasonal peak?
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It couldn’t just be that these property buyers don’t know that this is the annual peak. For our relative size, the number of inquiries, studies and urban policy research should mean Australians are among the most informed in the world when it comes to real estate markets.
In a 2009 research article I explore this phenomenon (available on SSRN) and show that the “spring bounce” is an artefact of inadequate statistical modelling.
Many house price indices are limited by the availability of data, and rely on median prices to get a sense for what’s going on across the market. However, the change in the observed median sales price can have more to do with the types of properties that are selling from period to period than the actual market movement.