Whether there is housing shortage or housing glut is something that people everywhere are always concerned about.

Housing shortage usually means serious home price inflation, while housing glut usually leads to property price collapse. Both scenarios can be extremely unpleasant for home owners and home buyers.

Then, there is the problems of urban slums, which is a big problem in many megacities around the world.

Currently, housing shortage seems to be the norm around the world. But housing glut is developing in many countries. This has great implications for social stability and human health.