Due to the very positive order situation, an extension was added to the building in 1974, creating more space for new employees.
This consists of a spacious, modern, single-storey timber and glass brick building. With its flat roof, the extension is clearly subordinate to the existing building and closes the gap on Am Exer.
The use of lots of glass signals openness and provides a view into the offices. The use of bricks as a wall material also created a reference to the surrounding buildings.