In the UK, money and resources are ploughed into the development of sophisticated technologies, materials and control systems with the aim of improving energy efficiency within the Built Environment. Technical systems often demand that the occupant is educated in their use; and as systems become more sophisticated, this is too frequently overlooked. In order for a building to perform to its potential, users must understand how the building works and how they can control it. This is of particular importance in a house/home as, with no facilitating body, users are left to tailor their own surroundings to make themselves comfortable. Users and their requirements vary tremendously and so it is important that the design of the control systems reflect this. By defining user groups and focusing on their behaviour; this paper aims to review the specific control systems and the implementation of renewable energy technologies employed in the BASF house, Nottingham, UK and ascertain probable conclusions as to what extent user behaviour demands specific knowledge of technologies and user control. It is hoped that the insight gained from this probabilistic study will highlight the requirement to consider user behaviour in modern residential building.