Does a Small Size Property/Building Need a Building Management and Control System? Somewhat, buildings are of different sizes, which often leads to confusion about the need for a bms building management system. In fact, commercial or residential buildings also have a demand for BMS nowadays. Here are the benefits and needs for BMS or BCS for small buildings, must or not. https://www.timessquarereporter.com/technology/does-a-small-size-property-building-need-a-building-management-and-control-system