Embodied carbon (EC) contributes a significant portion of the life cycle carbon footprint of the built environment. According to WWF, the construction sector is the second largest contributor of the carbon footprint in Hong Kong and 85% of the carbon footprint associated with the construction sector is embodied in imported goods and services. This study investigates the embodied carbon of locally used construction materials and develops the Embodied Carbon Of Construction Materials (ECO-CM) database for Hong Kong.