The aim of the work proposed in this paper is to test and evaluate the dry stratified construction technology for building envelope in warm climate (such as in Milan, Italy), showing the actual comfort and energy assessment of the first Italian Nearly Zero Energy Building in a University campus. Analyses are conducted on the VELUXlab building, recently opened within the Politecnico di Milano (Italy). VELUXlab is an experimental laboratory coming from a deep energetic and technological retrofit done on the VELUX Atika model home. During the construction phase an innovative wireless sensors network has been installed, including 14 surface temperature sensors on the building envelope. Here is proposed a comparative analysis between the actual data recorded and the theoretical data analysed through dynamic energy simulations. Further analyses are conducted in order to compare VELUXlab data with the data of average existing Italian buildings, and with the theoretical data referring to the minimum requirements suggested by Italian regulations for new buildings.