Josef Pein

Part of PORR AG, PORR Bau GmbH is a modern construction group with 150 years of experience and active in all areas of the construction industry. The company is based in Vienna, Austria. PORR Bau offers property management services as part of their holistic, sustainable, and life cycle-oriented building management. Additionally, their subsidiary PORR Alu Sommer specializes in metal and glass facades that enhance the aesthetic appeal of buildings.

PORR SUISSE AG purchase and manage real estate. Its services include building construction, civil engineering, infrastructure and environmental engineering. The company was founded in 1869 and is headquartered in Altdorf, Switzerland.

Founded in 1914, TEERAG-ASDAG GmbH is a civil engineering and Austrian construction services company. Part of PORR AG, the company is based in Vienna, Austria.

Porr AG provides building construction and civil engineering services. It specializes in foundation engineering, transport infrastructure construction, tunnel construction, power station construction, railway construction, logistics, bridge construction, environmental technology, post-tensioned structures, and pipe network construction. The company was founded in 2011 and is headquartered in Vienna, Austria.