Each square meter built in residential building is 441 kilos. of CO2. This is the main conclusion reached by the second study carried out by the Observatory of Environmental Sustainability of Residential Building, which also shows that 70% of the emission of greenhouse gases are a consequence of the processes of extraction and Steel and cement manufacturing.
For its part, the construction process itself generates 4.4% of the total greenhouse gases. From this company they have also made known that, in the EU environment, buildings are responsible for approximately 40% of energy consumption and 36% of CO2 emissions. Approximately 35% of buildings are over 50 years old and almost 75% of the real estate park is energy inefficient.