GHS-AGE R2025A – Global gridded estimates of the dominant age of the built stock (1975-2020)

GHS-AGE is a component of the Global Human Settlement Layer (GHSL). GHS-AGE consists of spatial raster datasets representing global, gridded estimates of the dominant age of the built stock. GHS-AGE has been derived from a multi-temporal stack of gridded estimates of built-up surface (GHS-BUILT-S R2023A, 1975-2020) and represents the epoch in which 50% of the built-up surface of 2020 has been exceeded for the first time, for each grid cell. GHS-AGE is available in World Mollweide Equal Area projection (ESRI:54009), at 100 m and 1000 m resolution, and for two levels of temporal resolution (i.e., 5-year and 10-year intervals). GHS-AGE enables the global, fine-grained modelling of approximate building construction epoch information using a globally consistent methodology, and constitutes important baseline data for a multitude of applications related to energy efficiency, building stock resilience and vulnerability, urban studies, disaster preparedness and disaster risk management.