De Zwarte Hond has designed a timber office building for Dutch energy company Alliander. Located on the Noordzeeweg in Amsterdam Westpoort, the new offices are described as circular and flexible, consisting of workshops, warehouses, test facilities, and educational and park buildings. 

Sustainability guided the design of the roughly 226,042-square-foot complex, which resulted in high flexibility, scalability, and modularity. Materials such as wood were used as much as possible, and harmful substances like glue, PU foam or sealant were minimized. The parking building’s detached set-up allows it to grow or shrink. In addition, the structure’s façades are made of weather-resistant Corten steel.

The office is gas-free and energy neutral due to approximately 37 square feet of solar panels and thermal energy storage. Its use of timber allowed the project to store 560 tons of carbon dioxide. Much consideration was made towards cost reduction and the reuse of materials. 

The buildings and interspaces were organized with "rhythmic alternations," which the architects compare to that of a barcode. The interior of the office building is distinguished by a large atrium and wooden central staircases. 

Together, they form an environment that fosters meetings and interactions. In addition, a “wandering staircase” connects each floor to a different location, allowing for an "exciting and adventurous" route experience through the office. 

Plants around the buildings, in addition to the greenery of the façades, provide an environment for biodiversity at the site. Rainwater is also collected and stored locally on-site for watering plants.