Haskoning strengthens its offering for the built environment with the acquisition of Nelissen Ingenieursbureau

29-09-2026

Haskoning today announces the acquisition of Nelissen Ingenieursbureau. With the addition of Nelissen, Haskoning welcomes around 70 specialists in areas including building services engineering and building physics. This strengthens Haskoning’s capacity and expertise to support clients throughout the design, delivery and management of future-proof buildings.

Based in Eindhoven, Nelissen Ingenieursbureau advises clients on the technical performance and sustainability of buildings. The company combines expertise in building services engineering, building physics, acoustics, fire safety and sustainability with experience in digital building models, simulations and building performance analysis.

Haskoning strengthens offering built environment with acquisition Nelissen Ingenieursbureau. In the image from left to right: Willemijn Pols, Erik Oostwegel, Joppe Leenaars, Janko Arts, Sabine Bink, Frank Rutjens, André van Schoonhoven, Branco Schot, Arjan van der Pal, Marjon Swinkels, Jeroen Rietkerk, Ivo Spierts.
From left to right: Willemijn Pols, Erik Oostwegel, Joppe Leenaars, Janko Arts, Sabine Bink, Frank Rutjens, André van Schoonhoven, Branco Schot, Arjan van der Pal, Marjon Swinkels, Jeroen Rietkerk, Ivo Spierts.

The demands placed on buildings continue to increase, and as a result our clients’ challenges are becoming more complex

Nelissen’s expertise is an excellent fit with our own capabilities and will enable us to support clients even more effectively through an integrated approach. Combined with Haskoning’s digital expertise, this also creates new opportunities to optimise building performance using AI.

Sabine BinkGlobal Director Industry & Buildings at Haskoning
A profile picture of Sabine Bink

By combining the expertise of Nelissen and Haskoning, the two companies will further strengthen their advisory capabilities in the areas of building safety, comfort and sustainability. Together, clients can be supported even more effectively in making future-proof decisions. For clients including government bodies, developers, educational institutions and healthcare organisations, gaining early insight into and control over a building’s performance throughout its entire lifecycle is increasingly important.

Nelissen’s expertise will also support international projects in markets such as airports, industry and data centres, where technical complexity, energy performance and safety are critical. This further strengthens Haskoning’s capabilities in growth markets that are strategically important to the company.

We have built Nelissen on specialist expertise and a strong commitment to our clients

Haskoning shares those values and gives our clients access to additional knowledge and disciplines. At the same time, it provides our colleagues with new opportunities to grow professionally and contribute to large-scale, international and complex projects.

Branco SchotDirector at Nelissen Ingenieursbureau
Profile picture Branco Schot, Director Nelissen Ingenieursbureau
The companies are not disclosing financial details of the transaction.
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