BUILDING INFORMATION MODELLING (BIM), IT IS A PROCESS TO CREATE A DYNAMIC, INTERDISCIPLINARY, SHARED AND CONSTANTLY EVOLVING, DYNAMIC, INTERDISCIPLINARY, CONSTRUCTION-RELATED DATA MODEL, WITH DATA ON GEOMETRY, MATERIALS, BACKBONE STRUCTURE, ENERGY PERFORMANCE, EQUIPMENT, COSTS, SECURITY, MAINTENANCE, ETC. THE PROJECT INVOLVES THE DEVELOPMENT OF THREE INTEROPERABLE DIGITAL PLATFORMS BY MEANS OF OPEN NON-PROPRIETARY FORMATS, OPEN BIM: (1) ‘ELECTRONIC FILE OF THE BUILDING’ FOR THE MANAGEMENT OF BUILDING INFORMATION THAT OUTLINES THE VARIOUS MOMENTS OF ITS EXISTENCE, (2) ‘DIGITAL MANAGEMENT OF THE BUILDING MAINTENANCE PLAN’, (3) ‘CITY INFORMATION MODEL’ (CIM), AS WELL AS TO IMPROVE THE OVERALL EFFICIENCY OF URBAN MANAGEMENT ON THE GROUND OF SPATIAL PLANNING INFORMATION, AND THE INF