If everyone lived with their siblings in the same house they grew up in, we wouldn't have a problem. As is, people have children who occupy a cumulative more h

If everyone lived with their siblings in the same house they grew up in, we wouldn't have a problem. As is, people have children who occupy a cumulative more houses with or without others than their parents/grandparents did, and there's not more land being made. So that's why the old land and what's on it go up in value. Basically, the increasing population (demand) is the cause of an asset increasing in value despite not increasing in quality. One can make policies which reduces the number people who wish to use homes in the domestic market of a given country if they want to prevent that from happening without expanding the supply massively instead, that may lead to other negative externalities though based on which method is chosen (birth limits, immigration controls, ect.).