Construction of buildings is a significant source of carbon emissions, as the materials and energy used during the building process contribute to the overall carbon footprint. The production of materials such as concrete, steel, and brick are major contributors to building construction emissions. Additionally, the transportation of materials and equipment to the building site also generates emissions.. To have a better understanding of the emissions generated during construction of your building, it's important to use a building carbon emissions calculator such as the one offered by NFTCar.