You really need to provide data to make that assertion. Shortages of buildings are not the only reason that property prices can be high.
Properties are made up of a building and a plot of land that it's attached to. Whilst we can nake more buildings, we can't make more land, so the land in a given location is by definition going to be in a permanent state of shortage. If more poeple want to live in that location OR (the main driver of this crisis) if more money is chasing the same fixed supply, then the prices rise. The land component is the part that has become more expensive recently, not the buildings.
Properties are made up of a building and a plot of land that it's attached to. Whilst we can nake more buildings, we can't make more land, so the land in a given location is by definition going to be in a permanent state of shortage. If more poeple want to live in that location OR (the main driver of this crisis) if more money is chasing the same fixed supply, then the prices rise. The land component is the part that has become more expensive recently, not the buildings.