Superblocks are an urban transformation strategy to create pedestrian-centric neighbourhoods. This study presents a methodological framework to assess the potential for urban green space (UGS) arising from superblock design. A quantitative assessment of the current state of UGS in superblocks is performed with geospatial analysis and earth observation techniques for a Swiss city. We find that UGS varies considerably across identified locations and decreases with smaller block sizes. Based on two scenarios, we illustrate how information on current UGS at the street or block level can be used to benchmark and assess urban greening potentials at superblock sites.