The book provides a complete vision about Spanish sustainable renovation of buildings situation at this moment analysing legal and technological context and opportunities that economic stimulus by means of direct aids and the use of BIM methodologies offers a standardization of high scale interventions.Nowadays BIM models let us integrate multiple quantitative parameters that can agile the information to interchange between stakeholders. Using this potential to standardize protocols of interventions and share knowledge is necessary to face a high scale intervention that our cities need.Climatic Emergency and socioeconomic crisis caused by recent events COVID19 and hydrocarbons crisis are the two principal struggles we face as society. European Politics embodied by National Energy and Climate Plans NECPs developed by each region give the way to the green transition of different productive sectors.Our building stock is responsible for approximately 36 of the CO2 emissions in the European Union.