Complex Bau Beteiligungs- & Vertriebsgesellschaft mbH Home Services References Contact Imprint Complex Bau Beteiligungs- & Vertriebsgesellschaft mbH has been your competent partner for building construction and turnkey construction projects in the regions of North Thuringia, North Hesse (Greater Kassel) and South Lower Saxony since 1993 . From single and multi-family houses to residential and commercial buildings, we realize your individual building project. Excellent quality and an optimal price / performance ratio are our trademarks. To cover all the trades of a project, we have a long-standing network of local, efficient and reliable specialist companies. In order to ensure the quality of execution of the services provided for you as the client, we have our building projects checked and certified by TÜV-Nord Bau Quality . This independent quality controlling offers you the security and proof that all work carried out is carried out properly and professionally.