Green FM - Singapore Green Building Councilt is one thing to construct a green building, but is a whole other ball game altogether when it comes to maintaining one. In fact, the management of green buildings can potentially be more important than its construction, considering that a building will operate for a far longer time than the combined duration of its construction. Furthermore, as the number of green buildings continue to climb, more "green" facility management firms are needed to care for this growing pool of high performance buildings.