C²Project is an engineering consultancy firm created in 2010 by two highly experienced Belgium-based engineers, managing technical infrastructure projects for clients in both the public and private sectors. As your project partner, we guide you every step of the way – from design to delivery of your works.

We are a dozen-strong team of experts with a range of specialisms, including construction engineering, design & draughting, surveying, landscape architecture and project management, all with more than 15 years’ experience.

C²Project’s commitment is to be proactive and professional, on deadline and on budget, for every client that entrusts us with a project. Our firm places a great deal of importance on listening, cooperation, precision and inquisitiveness.

4 partners

Antoine HANOTIER, Engineer

With a passion for the practical aspect and the variety that the profession of expert surveyor entails, combining hands-on expertise with a scientific and legal approach, I work closely with teams on the field, and take care of the management of our boutique firm.

C²Géo provides support with the foundations of the studies and plans of C²Project, whilst enabling both public and private clients to benefit from our vast experience.

Frank DECOSTER, Engineer

As founder, partner and managing director of C²Project, after completing my engineering studies, I quickly gained experience in the corporate world, specialising in infrastructure and remediation.

The profession of project designer/author soon became apparent as the obvious path. Founding C²Project has given me the opportunity to build on my leadership skills and cultivate my entrepreneurial spirit.

Isabelle PIRE

With over 30 years’ experience as a landscape architect, I design and roads and public spaces, with an eye for combining quality, functionality and landscape integration.

I am passionate about soft mobility and about coming up with lasting and sustainable solutions to create more pleasant and accessible spaces.

My expertise also lies in street and road lighting and other public lighting projects, and I have assisted with several urban lighting plans, so that towns and cities can be seen in a new light once night falls.

Fabian KEUTGEN, Engineer

An engineer by training, I quickly gained expertise in development of new neighborhoods with a focus on innovative solutions for projects such as the development of new neighbourhoods. Backed by a solid educational background, combined with a passion for project authoring and designing, I thrive on complex technical challenges and interacting with people at every level.

Working at C²Project allows me to learn daily how to work effectively with a wide variety of stakeholders, in order to achieve greater success and projects that excel long-term.

and a whole team to your service

At C²Project and C²Géo, we have industrial engineers, civil engineers, stability engineers, land and urban planning specialists, experts in natural heritage conservation, landscape architects, lighting designers, hydrography specialists, draughters, surveyors, health & safety coordinators and more, all working together to come up with solutions for your challenges.

Let’s build your project together!

October 16, 2025

You become part of our story.

2025

ABC²4D srl becomes C²Géo srl in order to better align with the group’s identity.

2025

C²Project launches its stability and structural specialist department.

2024

Engineering consulting firm SCHROEDER & ASSOCIES, a market leader in Luxembourg, acquires a majority stake in C²Project srl, C²infra srl and ABC²4D srl.

2020

C²Project acquires SCENILUM – infrastructure consulting firm, and partners up with Isabelle Pire.

2019

C²Infra is founded to take care of the northern Belgium market.

2019

ABT Group and ABT 3D merge and become ABC²4D srl.

2017

C²Project acquires ABT Group and ABT 3D - a firm of expert surveyors in Nivelles, and partners up with Antoine Hanotier.

2012

Frank Decoster partners up with Fabian Keutgen to continue to grow C²Project.

2010

Frank Decoster creates C²Project srl.