Certified office space stock grows by a fifth in major cities

"Before new leases, offices are thoroughly inspected and more attention is paid to the quality of space and sustainability – there is less and less room for compromise," explains Daniel Bey, Head of Project & Development Services and Tetris Germany. The future lies in existing buildings: "Buildings such as the Potsdamer Platz quarter or the Prisma in Frankfurt prove that even older properties can become sought-after green buildings through certification."

Commerzbank secured by far the largest deal in the first half of 2025 with the lease of 73,000 m² in the LEED Platinum-certified Central Business Tower office building in Frankfurt's banking district. The other places are occupied by Siemens with 33,000 m² in the DGNB Gold-certified "Pandion beat" in Munich and KPMG with 20,700 m² in the Park Tower in Frankfurt, which is decorated with BREEAM Excellent.

In the top locations, certified office space is rented particularly frequently. Here, the rate of 52 percent is significantly higher than in second and third locations with 39 percent and 21 percent. In the industry statistics, banks and financial service providers hold the top position with 70 percent. "Financial institutions have traditionally played a pioneering role in the sustainability goals. But other industries have also committed themselves to ambitious goals. Companies from the transport, traffic and warehousing sectors are also placing a clear focus on office space in sustainable buildings, with a share of 60 percent," emphasizes Helge Scheunemann, Head of Research at JLL Germany.

In his opinion, the trend towards sustainable and energy-efficient office buildings in prime locations will continue: "The demand for certified office space is already significantly exceeding the current supply. Therefore, increased investments in combination with certifications are required both in existing buildings and in planned buildings," says Scheunemann.