Lead Developer Ltd. & Lead Properties Ltd. concerns of Biswas Group Ltd. working towards sustainable growth over the years. Environmental sustainability has become increasingly important as we witness more natural disasters including global warming, flooding, and extreme weather conditions especially in Bangladesh. Typically, the enterprises that cause environmental degradation such as water, air and land pollution on the environment were not held accountable for them. In Bangladesh the enterprises that produce fired clay Brick responsible for most carbon footprint as well as air and land degradation. They externalized these costs and the society suffered. Lead Developer Ltd. & Lead Properties Ltd. concerns of Biswas Group Ltd. working with alternative building materials which can be used economically to replace fired clay brick to promote sustainable building materials.