The aim of the Buildings LCA application is to perform simplified Life Cycle Analysis (LCA) at the product level and at the building level, according EN 15804:2012 and EN 15978:2011. Moreover, the analysis is performed taking into account the modular concept of EN15804:2012. The application enables three different scopes for the LCA: (i) a cradle-to-gate analysis; (ii) a cradle-to-gate analysis plus end-of-life recycling and (iii) a cradle-to-grave analysis plus end-of-life recycling.