Nowadays Constructions projects are getting more complex and contain different disciplines, Coordination between these disciplines in the design phase is a key aspect in order to avoid conflicts therefore minimizing potential problems that may arise in construction phase. This imply saving money and time for the project. This thesis points out how important is the adoption of BIM methodology in the design phase as it allows more easier and efficient coordination between the different designing disciplines throughout different sharing information methods and carrying out clash detection analysis between the different disciplines’ models. The case study of this thesis is Piedmont Region High-Rise, a mechanical 3D parametric model for the underground parking area was developed starting from existing architectural and structural models, this phase was divided into two main steps the first one is the geometrical modelling and the second one was about the alphanumeric codifications, after finishing the model a clash detection analysis was carried out in order to figure out the conflicts between the different disciplines.