In recent years, energy savings in built-up areas have focused on reducing consumption during use (heating, lighting and so on). Less attention has been given to energy consumption in the construction process and in the manufacture of building materials. Now, more and more new buildings are almost energy neutral or even, on balance, generate energy. In this study, we focus wherever possible on the circularity of the building materials used in the building and less on the consumption of energy during the use of the building