This map shows the price of the housing stock of a territory, in purchasing power parity. This means that prices shown take into account the variation in what can be bought for US$1 in different territories. The most expensive housing per person in the world is in Europe, where a home is now usually no longer just somewhere to live, but is also an investment.
The cheapest housing stock is found in the African regions and Southern Asia, despite taking into account that money goes further in these territories.
Even with the higher costs of housing in richer territories, the average household is smaller in these places.