The present study contrasts the written production of threegroups of Spanish users: native speakers, L2 Spanish languageusers, and users of Spanish as heritage language (HL). Thelatter group constitutes the focus of our study and they aredefined as individuals who have been exposed to a HL in their closest environment since childhood while simultaneouslyor sequentially being in contact with a dominant language(Montrul, 2010). Their linguistic skills vary, as elements such astheir educational level in the HL or their level of contact withthis language will have an impact on their linguistic repertoire.The corpus is composed of 75 prospectus reports for capstoneprojects, which are explored in terms of their rhetoric anddiscursive organization, syntactic complexity, and use of textualconnectives. Findings allow the construction of academic writing competency profiles for each linguistic group.