Of course prices are not sustainable. The average salary in London is approximately £30,000. If you want to live in an area that doesn't have alcoholics and gypsies defecating in your front garden a house will cost half a million pounds. Loans to income levels are ridiculous.
Exactly. House prices in London and many other major cities in central Europe are excessive and are likely to come down substantially (adjusted for inflation) in the foreseeable future. I think the magnitude will be between -60% to -80% for the most expensive locations.
That will not happen for as long as there are people willing to pay and a shortage of houses.
The number of nice houses don't increase much but the number of millionaires increase in the UK and in the World, there is a lot of inflation and a lot of the buyers sell some real estate to buy real estate so they are immune to the price