gzt: The thing about low/lower house prices is that a house is very likely to be the same value in relation to other houses. Buying a different house with the proceeds of an existing house is not a problem.
Nailed it. Those who bought 30 years ago are still laughing, maybe not as much. Those that bought 3 months ago, well they know its a heated market, they took the punt. No issues there.
If you want to upgrade, downsize, just sell/buy in the same market to hedge it