Based in Nantes, the engineering firm Iris Conseil focuses on the environment
Founded in the 1990s, Iris Conseil (140 employees) provides engineering services in urban planning, transportation infrastructure, landscape architecture, sustainable mobility, and the environment. With offices in Saint-Quentin-en-Yvelines (its headquarters), Lille, Metz, Chartres, Bordeaux, Marseille (as well as in Rabat, Morocco), the company established a presence in Nantes in early 2025.
The Environment at the Heart of the Nantes Office
While the Nantes office is designed to encompass all of the company’s areas of expertise, those focused on mobility, urban renewal, and the environment are being prioritized. “The environment is now the driving force behind our growth,” emphasizes Jérémy Lucy, head of the Nantes office. In particular, the team has brought on board specialists in regional climate transition and experts in carbon footprint assessments.
Nantes: A Testing Ground
“The Nantes office serves as a testing ground for the company, whether in terms of hiring, target markets, or business development,” says Jérémy Lucy. “Since we’re starting from scratch, we can establish the right assumptions from the outset to anticipate both societal changes and developments in our industries.” The region’s economic dynamism, potential for influence, and proximity to Paris were key factors in choosing Nantes. “The proactive approach of the Loire and Brittany regions toward environmental issues also motivated us.” For Jérémy Lucy, a native of Nantes, this move also represents a return to his roots.
Ongoing projects for local governments
Iris Conseil is already carrying out several projects for local governments and public agencies in the region. In particular, the company has just been awarded a four-year multi-vendor framework agreement by Nantes Métropole for the environmental assessment of the metropolitan local urban development plan (PLUm). For the Morbihan department, the firm is involved in the environmental and hydraulic co-design of bicycle paths. With a strong track record in this field, Iris Conseil also intends to contribute, from its base in Nantes, its expertise on issues related to flooding and coastal erosion.
Provide environmental solutions to manufacturers
Beyond public-sector clients, who account for 80% of its client base, Iris Conseil aims to expand its business with industrial companies. “We can support them in their environmental transition and in the deployment of new green industries. For example, repurposing unused land can help companies improve their environmental performance. The rich industrial landscape of Nantes and Saint-Nazaire provides an ideal setting for offering environmental solutions and support.”
A network of partners
Since its arrival in Nantes, Iris Conseil has built up a network of partners, including architecture and urban planning firms, construction companies, fellow professionals, and others.
We are continuing to integrate into the ecosystem with the help of Nantes Saint-Nazaire Développement, which facilitates connections with industry and institutional stakeholders.
Currently staffed by six employees, the office located on Boulevard Jules Verne—“we couldn’t have asked for a better location for our Nantes office”—could eventually grow to fifteen to twenty people. “We want to keep the team this size, just like our other offices, so we can remain a company on a human scale.”
- Learn more about Iris Conseil
Planning to set up in Nantes or Saint-Nazaire? Contact us
