Urban Green Spaces (UGS) are essential constituents of the urban structure that enhance residents’ quality of life and behavior. This study introduces a process of analyzing UGS using landscape metrics and identification of potential expansion areas through suitability checklist and proximity buffering done in a GIS environment. Central Nairobi was selected as the representative study area, whose UGS were found to be unevenly distributed, lacking in size, character and most out of public access. A final composite potential map was formulated, that if its identified high potential areas are adopted for expansion of UGS, the above shortcomings could be rectified.