The Construction Industry is contributing significantly to the CO2 emissions, and so is the Deep Foundation Industry. With sustainability becoming more relevant each and every day, we, as a profession, have a role to play to reduce our emissions. Decarbonization is the first option: more efficient design reducing volumes of concrete or steel, and the use of different materials with lower carbon footprint. However, this should not be viewed as the only option available: the reuse of existing foundations must be considered as well, and even preferred as the most sustainable option.