I think that it's a case of underutilised properties being flushed out. No one really considers it, but in a booming market you might be more likely to have a

I think that it's a case of underutilised properties being flushed out. No one really considers it, but in a booming market you might be more likely to have a higher percentage of underutilised properties. When the market turns, those properties that were making money just by virtue of existing now lose money. A second home or a holiday home is one example. A house being slowly renovated is another. Plain old land-banked properties, etc. Put it this way. As the property market has boomed, the proportion of properties owned by investors has increased. Because only investors will underutilise a property (homeowners occupy it by definition), the proportion of underutilised properties increased. When the market turns, capital gains look less certain, and holding costs increase, investors try to get out. The underutilised properties get flushed out.