I would think that Europeans of all people would understand that the solution to unaffordable housing is to build more houses not turn on each other. Don't you guys have mandatory propoganda highschool classes telling you that socialist building projects will solve everything? IDK, I might have dozed off in history class.
In the UK we built loads of houses but then they all ended up in London and all ended up being bought by rich Chinese, Russian and Middle Easterner investors meaning we're back to square 1 but London's richer. Oh, and the counties are turning on whoever was at the head of the local building projects, if labour or con was there they take the flak. Plus no one really wants to live in the North as there's little up in the North because there's no industry, and then there's the whole demolishing the countryside for more infrastructure and housing that everyone but politicians tend to oppose. It varies from nation to nation, and even within nations it varies between little subsections.
Well I wouldn't say you are back to square one. Imagine if instead of the government supporting the construction of houses you guys had gone on a car building spree. But instead of Britons buying these cars they all got exported to China or Russia or the Middle east. You guys would be very happy about that, an export boom giving you prosperity. Except this is even better really because if you'd sold them cars or another widget, they wouldn't be paying property taxes on them. So not only do you have the good gdp numbers from these "exports" of title of sale, but you have an ongoing revenue stream.
Real estate isn't infinite in supply but I think it's pretty safe to say that London could still grow bigger, especially if foreign oligarchs are under utilizing it's public goods. You'd just need to build new housing. The revenues from property taxes could help to subsidize that.