Bubble Talk in Canada and London

The Wall Street Journal is running a couple of articles looking at the rapidly appreciating real estate markets in Canada and the London and the concerns that these might be "bubbles."

Housing Rebound in Canada Spurs Talk of a New Bubble

Last Wednesday, a housing-price index for Canada's six biggest cities posted its seventh straight monthly gain, showing home prices in November are now back to their prerecession peak. Another broader measure shows the average home price in 2009 hitting a record. Home building has picked up too, with housing starts in December jumping to their highest level since October 2008...

Canada's finance officials say they're watching home prices carefully. The finance minister in December outlined steps he can take to cool things down, if needed. The central bank last month said it is watching the booming market with "vigilance, but not alarm."

Some observers foresee trouble...

The London Real Estate Bubble Is Back—and It's Scary

Looking at the real estate listings here is like stepping back in time to that unreal, giddy world of three years ago—before Lehman, before subprime, before AIG. Back to a period when everyone was either rich or on their way, either from flipping condos or running hedge funds, and the only direction was up.

But these prices are now, and they contain an ominous message: The London real estate bubble, arguably the biggest one of all, still hasn't popped...