The research effort presented here is based on the view of emergent behaviours. The aim is to develop smart building products each of which is independent, self-sufficient and with very limited intelligence. Using “Basic Building Blocki as a platform, three building products, interactive louvers, see-through wall panel, and sensible floor tile are developed to illustrate the emergent smart behaviour. These smart building products contain intelligent technologies that can be implemented into existing buildings incrementally without having to perform major renovations.