Welcome to the sbe22 Berlin D-A-CH conferenceThe sbe22 Berlin D-A-CH conference, which will take place under the theme “Built Environment Within Planetary Boundaries”, will provide a platform for the exchange of ideas on innovative design and planning methods, building products, futureproof buildings and infrastructures as well as sustainable neighborhood and urban development. It is primarily aimed at participants from Austria, Switzerland and Germany, as well as from other European countries, and includes representatives from countries of the global south. Participants will be introduced to options for the further development of methodological principles, design, planning and evaluation tools, as well as concrete solutions and examples from the fields of products, buildings and urban planning. The scientific sessions and several special events invite representatives from science, politics and industry to an in-depth exchange of experiences.Europe has formulated ambitious goals for its sustainable development over the next decades and plans corresponding measures. Many of them directly and indirectly affect the construction and real estate sector, as well as the closely related energy supply. Buildings and infrastructures provide prerequisites for social and economic development and have a major impact on the quality of life of their occupants and neighborhood. However, they are also associated with undesirable energy and material flows, as well as effects on the global and local environment, which to prevent further harm, have to be minimized. Climate protection, resource conservation and health protection measures have to be designed in such a way that issues of economic efficiency, value stability and affordability are taken into account. At the same time, buildings and infrastructures are already affected by the local consequences of global climate change and must be adapted to them. It will be necessary to achieve this by assessment of the respective sites and planning with prevision of the developments of the next twenty years. The fact that the construction and real estate sector causes considerable energy and material flows, as well as environmental impacts, also points to the necessity of looking for potential for savings and reduction. The success of sustainable development thus also depends on the players in the construction and real estate industry, including upstream and downstream sectors. The construction and real estate sector is thus both a cause and a victim of the previous code of conduct of resource management of real estate industry and building sector, as well as a field of action for solutions to change it.