vaveiDesigner is a software application for visualization of KNX systems in intelligent buildings, which was created by world standard for the building automation. The KNX certified partners can in a very simple and effective way visualize their projects and manage the installation of smart home from a central place. For modern graphic design visualization skills are not necessary, because all components are defined and they can be adapted to each project and the customer needs. The customer have a excellent building-overview and they can can with a little training, intuitive and simply use the vaveiSystem. vavei is the first application in the area of visualization, it is created in Microsoft. NET technologies (WPF and WCF).