House of Horrors
MANY of the world’s financial and economic woes since 2008 began with the bursting of the biggest bubble in history. Never before had house prices risen so fast, for so long, in so many countries. Yet the bust has been much less widespread than the boom. Home prices tumbled by 34% in America from 2006 to their low point earlier this year; in Ireland they plunged by an even more painful 45% from their peak in 2007; and prices have fallen by around 15% in Spain and Denmark. But in most other countries they have dipped by less than 10%, as in Britain and Italy. In some countries, such as Australia, Canada and Sweden, prices wobbled but then surged to new highs. As a result, many property markets are still looking uncomfortably overvalued.
The latest update of The Economist’s global house-price indicators shows that prices are now falling in eight of the 16 countries in the table, compared with five in late 2010. (For house prices from more countries see our website). To assess the risks of a further slump, we track two measures of valuation. The first is the price-to-income ratio, a gauge of affordability. The second is the price-to-rent ratio, which is a bit like the price-to-earnings ratio used to value companies. Just as the value of a share should reflect future profits that a company is expected to earn, house prices should reflect the expected benefits from home ownership: namely the rents earned by property investors (or those saved by owner-occupiers). If both of these measures are well above their long-term average, which we have calculated since 1975 for most countries, this could signal that property is overvalued.