| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | Wilhelm Layher GmbH & Co. KG | Scaffolding | 0 |
| 2 | Wilhelm Layher GmbH & Co. KG Niederlassung Berlin | Scaffolding | 0 |
| 3 | Wilhelm Layher GmbH & Co. KG Niederlassung Bremen | Scaffolding | 0 |
| 4 | Wilhelm Layher GmbH & Co. KG Niederlassung Dortmund | Scaffolding | 0 |
| 5 | Wilhelm Layher GmbH & Co. KG Niederlassung Düsseldorf | Scaffolding | 0 |
| 6 | Wilhelm Layher GmbH & Co. KG Niederlassung Frankfurt | Scaffolding | 0 |
| 7 | Wilhelm Layher GmbH & Co. KG Niederlassung Freiburg | Scaffolding | 0 |
| 8 | Wilhelm Layher GmbH & Co. KG Niederlassung Hamburg | Scaffolding | 0 |
| 9 | Wilhelm Layher GmbH & Co. KG Niederlassung Hannover | Scaffolding | 0 |
| 10 | Wilhelm Layher GmbH & Co. KG Niederlassung Leipzig | Scaffolding | 0 |
| 11 | Wilhelm Layher GmbH & Co. KG Niederlassung München | Scaffolding | 0 |
| 12 | Wilhelm Layher GmbH & Co. KG Niederlassung Nürnberg | Scaffolding | 0 |
| 13 | Wilhelm Layher GmbH & Co. KG Niederlassung Regensburg | Scaffolding | 0 |
| 14 | Wilhelm Layher GmbH & Co. KG Niederlassung Ulm | Scaffolding | 0 |