The growing flow of international migration to Turkey has serious implications for the social, economic and spatial transformation of recipient cities across the country. This paper highlights some of these implications by discussing findings from an ethnographic case study carried out in an inner-city locality of Istanbul. It raises four main points: 1) urban localities of migrant settlement are not accidental; 2) they are often highly diverse in new and complex ways; 3) space and difference are intricately intertwined in such urban localities; and 4) migration and diversification at the local scale can produce conflicted space narratives and governance systems. This paper aims to emphasize the importance of acknowledging the position and impact of migration to Turkey in the framework of larger processes of urban and societal transformation.