Advanced Building and Urban Design (ABUD) is consultancy firm empowered by engineers, architects and researchers specialized in sustainable building and urban design. We have promoted sustainable design for more than 12 years as individuals before ABUD was established in 2012. We offer services from the conceptual planning phase to the realisation of a project, for project sizes from a detached house to urban concepts. In addition to designing new buildings in an environmentally-friendly way, we see a great challenge in the green refurbishment of existing buildings. Apart from dealing with whole building and even urban scale projects, our team placed special attention on the optimization of building skins, the barrier between the exterior and the interior environments. We use special analysis tools to evaluate energy and environmental performances on a building and urban scale not only to validate our own design projects but as a specific service for our clients as well. We believe that our work not only meets interests and aesthetical expectations of our clients but also serves the sustainable development of our environment. This belief and commitment drives us in European and global research projects where new directions and possibilities can be found. In ABUD as a think tank, we participate actively in the work of scientific and professional organisations that support the worldwide promotion of sustainable construction. We work and train ourselves continuously because we would like to contribute to a more sustainable world by means of innovations.