This article analyzes the legislation of the two territories that have the most advanced legal framework regarding language policies towards Catalan: Andorra and Catalonia. The study of the legislation in relation to contexts of social and institutional use shows how this legal framework is not sufficient to change Catalan from being a minoritized language, since the phenomenon of minoritization is innate to the ecosystem in which languages develop. This ecosystem is conditioned by the presence of Castilian as a lingua franca on both sides of the border between Andorra and Catalonia. In the case of Andorra, its status as a cross-border microstate makes it a plurilingual space with Castilian as a socially cross-cutting language; moreover, the fact that until recently there was no network of state schools hindered Catalan language normalisation efforts. Catalonia, on the other hand, is an even more complex example on account of how the implementation of "llengua pròpia" policy contradicts the constitutional control the Spanish state exercises on this.