I. Introduction
The Internet of Things (IoT), as per the ITU Recommendation ITU-T Y.2060 [2], has been defined as: “a global infrastructure for the information society, enabling advanced services by interconnecting (physical and virtual) things based on existing and evolving interoperable information and communication technologies”. Among physical objects, buildings are playing a major role in this technological transition. Building function either as human habitats, for example domestic buildings, or for some specialized goals, for example storehouses, shops, industrial buildings, or schools. In some cases they can have both functions.