This paper advocates for mixed-method networks research design to describe and analyse egocentered social networks in transnational family research. Drawing on the experience of the “Social networks’ influences on family formation”, we show how the combined use of network generator tools and open ended interviews produces unique data on family configurations and their impact on life course choices. A mixed-methods network approach presents specific advantages research on children in transnational families: quantitative analyses reconstruct the potential and actual relational support available to children in a context where kin interactions may be hindered by temporary and prolonged period of separation; qualitative analyses address families strategies to maintain relationships across legal borders and geographical distance, and the implications for children well-being.