The price of houses is going to be directly linked to how many people default. People know the value of their asset - and only look to move if it ia worth it for them.
Those at the top of the market wont be looking to sell their asset at a "loss", meaning supply for people to move up the property ladder will probably be restricted.
That will leave probate sales, and those forced by change in circumstanced which will seriously limit supply. Demand is unlikely to change overall, as there are so many people in rented or parents looking to move, or people outgrowing existing homes. So it is likely that while people will be able to borrow less money, there will be more people competing in the middle and lower end of the market.
Fundamentally until supply far outstrips supply, prices wont drop too far as people just wont sell.... the issue is a behavioural one, not a purely economic one.
We therefore may have a correction, but i dont think we will have a long term or sustained freefall in property prices - and they will end up increasing again over time unless the government increasea the rate at which it builds home, limits construction firms ability to sell new homes at a premium and improves the quality and size of new build homes (ie build homes that people want to buy).