Building sector account for 38% of human GHG emission (10% residential& 18% commercial), an ever increasing trend since the introduction of cement based building materials apart from electric appliances& gadgets that has become part of daily life necessity. On average a regular building attribute 5,000kg CO2e/m2 through its lifecycle of which 25% come from its construction while up to 2% of it during its course of operation per year. We can’t twist the facts that the demand for building is in tandem with the ever growing human population which translate to increment of GHG emission, thus questions on effects of climate change and sustainability natural resources ensued. United Nation (UN) projected that world population would reached its peak, at 9.22billions, in 2075, an additional of 2.1 billion souls from now. The right for quality shelter is basic to humanity which by then foreseeable as a matter of past but to reached there a mechanism to achieve the equilibrium between human and the surrounding environment is critical now. The sector is most promising in CO2 emission reduction in related to cost effectiveness, as suggested by Intergovernmental Panel on Climate Change (IPCC).