With the research houses in Bad Aibling, the “Simple Building” concept of the Technical University of Munich has been successfully put into practice. Extensive measurements in the three buildings prove that an appropriate level of living comfort is also possible in a reduced building concept.” The aim of “Einfach Bauen” is to mark the starting point for a new, counter-rotating building development and thus provide an important impetus in the German construction industry. The overall “Einfach Bauen” project is divided into three areas: 1 Simulate, optimize, compare; 2 Plan, build, measure; 3 Evaluate, validate, feedback