The Instytut Doradztwa sp. z o.o. completed its work on the net-zero construction technology in the frames of an R&D EU project in 2014 and focused on the creation of model buildings and a building management system. The basic need was to monitor parameters of the new technology, collect measurement data for further analysis and create a building management system that was easy-to-use for the disabled. As a result it developed a safe web system for smart building management compatible with the KNX standard and with dedicated KNX electronic devices. The application operates in a web browser and has a dedicated, responsive user interface. The system is equipped with innovative algorithms for voice analysis, gesture control and user identification. Dedicated KNX devices enable the measurement of building parameters and the communication of the building management system with the KNX bus via KNX/net IP gateway.