The previous four stages of coupled urban neighbourhood microclimate modelling and building indoor simulation have shown the extent of summer overheating in ICoSS both for 2012 and 2050. The objective is to overcome the overheating problem while maintaining ICoSS as an intelligent green building. Our final stage of the simulation study is to explore additional passive design futures: interior or exterior shading devices (Figure 8). An external louver system for the southfacing façade is also proposed (Figure 9).