The barn at Rotvoll farm has a history of 140 years. The design project aims to prepare it for future use by reusing the old structures as much as possible while ensuring a good energy performance. The future user of the barn is Camphill movement that creates “life-sharing” communities and schools for adults and children with learning disabilities and other special needs providing services and support for work, learning and daily living. Energy performance of the building, on-site energy supply options and embodied emissions of the new added reused materials were estimated as part of the design.