Witboom 1 is a multi-tenant office building of three storeys on the De Hagen business park on the east side of Vianen, visible from the A27 near the Everdingen junction of the A27 and A2. Business centre areas on two floors offer move-in-ready office rooms in various sizes. The landlord furnishes the rooms with modular furniture that is reused, cleaned and repaired to extend its life. The building has a fibre connection and energy label B.