This article presents the results of a research project concerned with analysing and identifying the discourses and related strategies used by Spanish-German trans-migrant families to support and develop bilingual and intercultural competences stemming from their transmigratory experiences. Using the biographical-narrative approach, we reconstruct the families' migratory phases, emphasising shifting parental discourses on bilingual practices and intercultural competences in the home. After presenting the analysed empirical data, the results obtained are grouped into four broader intrepretative frameworks: bilingual practice, life-world intercultural theories, social networks and "cosmopolitanism". (Contains 3 notes.)