Once the surface area has been projected, the next step is to determine how this surface will be used, that is, the modal distribution between the different types of buildings. This will also be common for both scenarios.

Ten types of buildings have been considered: Office, Warehouse, Shop, Educational centre, Supermarket, Restaurant, Hospital, Hotel, Residential (block of flats), House.


For the residential sector, it has been assumed that the modal distribution of the aggregated surface area built for the period 2000-2009 per autonomous region is representative of the conditions for 2050, since the peak in residential building coincides with the examined period.


There is no available information for the tertiary sector, therefore the situation in the USA has been considered as the base and it has been weighed with the available national information corresponding to the building sector in the last ten years, with the following outcomes per autonomous region: