As the world's population has grown, in line with the logic of demographic transition, housing has obviously expanded, due to the increase in the number of households to which housing must correspond. But this general trend needs to be clarified geographically. Indeed, housing development is not spread with equal intensity across the planet. It particularly concerns urban areas as a whole, but in different ways. We therefore need to start by measuring the rate of urbanization, which is an available indicator, after underlining the fact that housing development generally outstrips demographic growth. At the same time, our societies are characterized by an increased demand for mobility, combining quantitative and qualitative factors. Increased housing and demand for mobility generate a range of pollutants, including rising greenhouse gas emissions. This situation compels us to move towards eco-housing and ecomobility, and towards a synergy between the two.
