This website won’t like this. But it’s a failing of the market and it could be fixed by capitalism.
Removing restrictions on housing density, and where houses can be built and adding a Land value tax would help things. Also obviously less immigration would solve the demand side of the equation. I think countries should stop focusing on the ever increasing growth of countries and we should focus more on things like free time.
But really the solution to this is A build a new city or B destroy large parts of a city that were built when the city size was 10% it size and built more density, modern building standards, public transport etc.
But the boomer generation don’t give a fuck about the next generations so probably have to wait for them to die.