Worldwide, buildings consume approximately 42% of all electricity, surpassing any other asset. To achieve sustainable energy consumption levels, it is essential that appropriate and effective building management systems be employed. A building management system (BMS) is the core of a building automation system (BAS) in which a BAS includes connectivity of the various subsystems and applications such as HVAC and lighting controls. This study examines the existing market for Building Management Systems and the emerging potential for Building Automation Systems, both in new deployments and in retrofits to existing BMS. The report also outlines the technological, environmental and financial developments that are set to alter the landscape of the BMS market over the next five years.