I've noticed several houses over the last month or so that haven't sold anywhere near as fast as expected. Around here (Greater Seattle area), houses have been selling in a matter of days: On the market by Wednesday, open house at the weekend, offer accepted on the Monday.

If there had been just one house not selling that fast I'd have assumed overpriced, or something noticeably wrong with them, but even the new builds are struggling to sell at a price that would have been market competitive back in July / August.