Parts of the country that saw the middle classes paying silly money for houses as second homes and holiday lets are the places that are going to have the real last laugh here.
It's happening already. The Welsh government has changed some taxation rules on second homes - ones that aren't run as an actual business for holiday lets - which have resulted in quite a few properties turning up on the market. Sadly, they're still priced well beyond the reach of most locals, but I think that it's the beginning of what could be quite a useful correction, particularly in view of these economic developments.
It's also pissed off some of the holiday let people - most of whom tend to be local people - because the bar has been set quite high as to how many nights' occupation qualifies it, and lots of local holiday let types are the sort who aren't necessarily running it as a full-on business, but just a seasonal thing. But hey, you don't make an omelette without breaking a few eggs...
Either way, I think this is going to be a turning point for house prices. And I am not even going to guess at what the drop could be - as 1991 showed, once a panic starts, and overcommitted people begin to try to bale out before they hit negative equity and have to pay to bale out later, I think we could see a strong downward pressure on prices. Post-1991, banks were having to hold back on the rate at which they foreclosed on delinquent mortgages, as the risk of flooding an already collapsing housing market with bargain-basement repossessions was too great. But if the collapse looks like it could be significant, it may even be that suddenly reluctantly-property-owning banks could just dump and run, too, which could send the whole thing into a bit of a corkscrew.
My stepdaughter bought her first house a month or so back, and just told me today that she'd got it on a 5 year fix. I think she's feeling quite pleased with herself - absent some dramatic change in their domestic circumstances, she's fairly well insulated against too much that can happen in the property/mortgage market for the duration. But property ownership shouldn't be like speculating on the money markets...