The overall goal of the call “EeB.ENV.2011.3.1.5-2” is to develop a specific guidance document for application to Energy Efficient Buildings and related training material with courses for practitioners in industry and research. This is to be based on and in line with the International Reference Life Cycle Data System (ILCD) Handbook, co-developed by the European Commission's JRC-IES.The concept for this guidance document is based on two core elements: an extensive list of elements that need to be taken into account when dealing with Life Cycle Assessment (LCA) within the Energy-efficient Buildings Initiative (EeB –PPP) and the solution approaches how to address different issues and an extensive guidance including examples and operational instructions on how to conduct adequate, high-quality LCA studies.To assure acceptance and applicability, a strong and active involvement of all relevant stakeholders is foreseen.The EeBGuide will be prepared in line with the ILCD Handbook and with respect to activities such as:• CEN TC 350 standardization work on the sustainability of construction works,• Harmonization activities of the Sustainable Buildings Alliance concerning the carbon footprint of buildings incl. activities on sustainable construction,• Existing and upcoming EPD programmes with their definitions and specifications.The balanced project consortium features specifically experienced research, consultancy and industry partners and the EC: FRAUNHOFER, PE INT, CSTB, ESCI, BRE and ChS.The expected outcomes of EeBGuide include:• A guidance document - based on the ILCD handbook - that is scientifically sound, accepted by practitioners and quality assured (reviewed),• Exemplary LCA case studies, including recommendations on how to implement adequate building LCA tools,• Broad dissemination among LCA practitioners and industry, &• A website, as a central information hub on the operational guidance on LCA within the Energy-efficient Buildings Initiative.