The UDMV workshop is a place to discuss the modelling and visualisation of the city at various spatial and temporal scales, and aims at sharing associated techniques, methods, uses and points of view. Managing and understanding urban data are major issues as they are represented by several kind of different data sets at various scales. Urban data not only embed the geometry of the city model, but also data related to human activities (e.g. social data, transportation, mobility, history), to physical phenomena (e.g. light, wind, heat), and to environment (e.g. geography, climate). Thus, the processing of urban data is a huge challenge for current GIS and computing capabilities, especially considering all the sustainable development parameters related to architectural design, urban planning and urban climate studies; but also considering the specific needs of entertainment, cultural heritage or any domains using urban data. The workshop aims to gather in a same place GIS, BIM and computer graphics communities.