Ing.-Büro NIEHSEN-BAUMANN Inh. Dipl.-Ing. L. Baumann VDI is an independent engineering office based in Germany with locations in Chemnitz and Berlin. The company specializes in technical building equipment (TGA) for various construction projects, with a particular focus on churches and listed buildings. Their services encompass consulting, planning, project management, and supervision, aiming to provide technically and economically sound solutions for complex building endeavors.