BUILD UPON: Empower stakeholders to assist public authorities. 1. Provide large-scale capacity building or engagement activities: The key objective is to engage and empower a ‘critical mass’ of over 1,000 stakeholders with the process of defining and implementing their long-term national renovation strategy (Article 4, Energy Efficiency Directive). Process carried out by an important organisational innovation, ‘Green Building Councils’ (GBCs), in BG,CZ,ES, HR, IT, IE, FI, LV, RO, SE, SI, SK and TR. GBCs are multi-stakeholder platforms, formalising a ‘Regional Action Network’ of connected actors who will ensure the continuation of the activities beyond the project’s duration. 2. Target specific actors among a wide spectrum of stakeholders: The renovation stakeholder ecosystem will be mapped across the Project countries, to understand precisely which organisations will be needed to define and implement Article 4 and how this system functions. BUILD UPON has received over 100 letters of support across all its target groups. 3. Demonstrate a strong European added value: The complex landscape of renovation initiatives (both public policy and market driven) will be compressed in a living ‘RenoWiki’ resource, to enable stakeholder understanding and dialogue, and ensure all stakeholders are ‘on the same page’. The stakeholder ‘community’ will be developed through a series of nearly 80 workshops across the region at local, national and European level. These will explore collaborative and solution focused working methods to deliver the stakeholder buy-in required by government to define and implement ambitious and viable Article 4 strategies. Experts involved with the design and management of identified best practice renovation initiatives will help stakeholders assess feasibility for implementing these in other countries, to move best practice sharing beyond information to action, and an incubator for new concepts will help launch further implementation orientated projects.