The wall & roof material properties of the studied green building might be one of the major reasons to explain the insignificant energy saving performance of green vegetation. Although there are published literatures that have confirmed the excellent energy saving performance of green vegetation in different buildings, the relationships between the properties of the building facade and the energy saving performance was not fully considered in such publications [15,21–23]. The studied green building is a newly constructed building with the LEED Gold standard. Thus, the building facade has already been constructed to earn the LEED points in energy savings. This research confirmed that the green vegetation has no significant impact on the energy savings in LEED standard buildings, such as the studied green building