Deirdre McMurdy

The Four Horsemen of the Apocalypse — better known to their friends and family as Conquest, War, Famine and Death — are among the more colourful characters in the New Testament's Book of Revelations. But should they ever decide to extend their brand in these turbulent times, there's not much doubt who they should sign up as the Fifth Horseman: Bubbles.

True, the most famous Bubbles of all was a chimpanzee once owned by the late Michael Jackson. He used to tote Bubbles everywhere with him and dressed him in matching, primate-sized outfits, like the red leather jacket he wore in the Thriller video. All of which is profoundly alarming.

But the most terrifying bubbles these days are the ones that continue to rattle and roil the confidence of financial markets. Most recently, economist Nouriel Roubini (aka Dr. Doom) has been warning anyone who will listen that low interest rates and a falling U.S. dollar could puncture an asset bubble that's formed in the aftermath of the financial crisis.

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Bubbles come in many varieties (perhaps the best known one in recent memory in Canada was the high tech bubble of 2000), but they are feared to such an extent because they ravage personal capital and leave entire market sectors in rubble.

Currently, the Apocalyptic Bubble that is striking fear in Canada is of the real estate variety. There's concern in many circles that relatively high housing prices will pop mightily when the Bank of Canada moves, as it inevitably will, to increase interest rates.

More on housing:

More on housing:

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Tapping your home equity in retirement
Where U.S. home prices are hitting bottom
Where to live very well on less
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As asset bubbles go, the housing market sort are especially tricky devils because of their highly political nature. Home ownership, you see, is a very popular thing with voters. And governments, especially minority governments, like to keep voters happy. Furthermore, because of the ripple effect on confidence and spending that go with purchasing a new home, it's all the more desirable to encourage it as a form of economic stimulus.

There's not much question that the performance of the Canadian real estate market in the midst of the recession has been impressive. In August, the Canadian Real Estate Association estimated that national home sales were up 18.5 per cent year over year and prices were 11.3 per cent stronger in the same period. Hmm.

So what's been underpinning that activity and how sturdy are those underpinnings — especially in light of unemployment numbers and the apparently slow path to economic recovery?