Requirements of state-of-the art buildings are changing. Massive cost increases result in new structural concepts and, above all, in changing planning flows. No matter if a new building, renovation or conversion - with our buildings, we always try to come up with the different requirements. In order to achieve a high architectural and living quality, we are looking for optimization potentials on all levels. Quality does not have to be expensive. Building and maintenance costs can be considerably influenced by a diligent design. Architectural quality and economic efficiency, therefore, need not contradict each other.