De Zwarte Hond

De Zwarte Hond is a design company for architecture, urban design and research based in Groningen, Rotterdam and Cologne. We combine social engagement and craftsmanship to create high quality, precise projects that are sensitive to the context, to the users’ needs and to the visions of our clients. Our work ranges from housing, education, healthcare, hotels, museums and workplaces to neighbourhoods, cities and urban regions.

“If you want to go fast, go alone. If you want to go far, go together.” Our work is based on a profound interest in the people and world around us, from residents and users to our partners. That open view is essential to see and understand interdependence. Intertwining is the soul of our working process.

We are a team of unconventional thinkers with high ambitions for design and society. We can think across all scales from a metropolis right down to an individual brick. With ten partners and a skilled team of 100 staff, we have a broad scope of knowledge and multi-disciplinary, full-service experience. We draw on this expertise to translate any assignment, no matter how complex, into a clear intervention that makes a lasting, positive contribution to people and their living environments.

Representatives at the HPP stand

Ellen Schindler
CEO | Partner

As CEO at De Zwarte Hond Ellen Schindler is responsible for Business Strategy & Development, Branding, PR & Communication, the Academy and Internationalization. Together with Jeroen de Willigen and Eric van Keulen she is part of the management team.


Jeroen de Willigen
Creative Director | Partner

Educated at Delft University of Technology and graduated in 2015 in MCD (Master City Developer) at Erasmus University Rotterdam, he won the MCD thesis prize in 2015 with his thesis “The Value of the Structure”. Between 2008 and 2012, De Willigen was coordinator urban development at the Academy of Architecture in Rotterdam and lecturer in Groningen and Delft. Jeroen was city architect in Groningen from 2016 to 2020.


Eric van Keulen
Business Director | Partner

Eric van Keulen (1964) is responsible for the business side of De Zwarte Hond. After studying environmental science, he started his career in soil remediation, waste processing and waste collection. In 2000 he started working at De Zwarte Hond, where he was named a partner since 2005.


Matthias Rottmann
Urban Designer | Architect | Partner

Matthias Rottmann (1974) is in charge of De Zwarte Hond in Cologne. Before opening the German office in 2010, he worked for some time as an architect / urban planner at De Zwarte Hond Rotterdam. His expertise lies in large-scale (infrastructure) projects and urban transformation assignments. Matthias is actively involved in the architectural debate, publishes and is regularly associated with various architecture courses in the Netherlands and Germany as a guest lecturer and critic.

Johannes Langer

Designer Urbanism & Architecture



Rosanne van Tilburg

Business Development & PR



Sijmen Schroevers

Business Development



At the HPP stand, we are the contact person for the spatial and architectural translation for authorities, developers and investors.

De Zwarte Hond
Hoge der A 11
9712 AC Groningen
+31 (0)50 313 40 05

Aert van Nesstraat 45
3012 CA Rotterdam
+31 (0)10 240 90 30

Unter Taschenmacher 2
50667 Köln
+49 (0)221 168 04 40


See the other HPP co-exhibitors