  Buildings produce one-third of carbon emissions globally, however, data
absence regarding global floorspace poses challenges in advancing building
carbon neutrality. We compile the measured building stocks for 14 major
economies and apply our global building stock model, GLOBUS, to evaluate future
trends in stock turnover. Based on a scenario not considering renovation, by
2070 the building stock in developed economies will be ~1.4 times that of 2020
(100 billion m2); in developing economies it is expected to be 2.2 times that
of 2020 (313 billion m2). Based on a techno-economic potential scenario,
however, stocks in developed economies will decline to approximately 0.8 times
the 2020 level, while stocks in developing economies will increase to nearly
twice the 2020 level due to their fewer buildings currently. Overall, GLOBUS
provides a way of calculating the global building stock, helping scientists,
engineers, and policymakers conduct a range of investigation across various
future scenarios.
