come back with a sensible argument, were talking about possibilities. These things can't even getting planning permission. Doesn't mean they cant in the future and when they're recognised as sandard construction and cost a fraction to rebuild, mortgages wont be an issue.
So no attempt to address the point?
Its also untrue that houses don't depreciate....
New build houses often suffer rather large drops in value (unless there is a generally booming market to mask these loses)
New houses, in a stable market, tend to lose a fair chunk of value straight away and then remain relatively stable (if maintained).