Stage One: Mania — Prices rise at an accelerating rate as factors like excess central bank liquidity/loose credit/hot foreign money drive a virtuous bidding cycle well above sustainably afforable levels.
Stage Two: Peak — Increasingly jittery owners attempt to sell out before the party ends. Supply jumps as prices stagnate.
Stage Three: Bust — As inventory builds, sellers start having to lower prices. This begins a vicious cycle: buyers go on strike not wanting to catch a falling knife, causing sellers to drop prices further.