It is important to make evident that these buildings are in different climatic zones: characteristics  vary from building to building, passing from a climatic zone B (Agrigento, Catania,  Messina, Palermo, Trapani, Siracusa) to a E (Enna), that means moving from a  warm to a cold climate, with just few examples in halfway zones (buildings that  are in Ragusa – zone C –or Caltanissetta – zone D).
    This  variability has been seen as an advantage, because it allows to validate the procedure on  different climates, and, in the future, to extend the procedure to a larger  urban area, taking in consideration conveniently constructive and  typological differences.
           
The main phases of the building stock analysis are (see Figure 7):