Sustainable Office Architecture in Nantes: Multimodal Hub and Offices by DREAM + AIA Life Designers

The Multimodal Hub and Offices in Nantes, designed by DREAM and AIA Life Designers, stands as a model of sustainable office architecture in Nantes. Strategically located next to the new Nantes train station, the complex symbolizes the city’s ongoing transformation, linking historic neighborhoods with the emerging Euronantes district. This architectural landmark embodies mobility, sustainability, and workplace well-being, reflecting the evolving needs of contemporary cities.

Urban Integration and Purpose

As one of Western France’s most dynamic cities, Nantes continues to reshape its urban landscape. The Multimodal Hub and Offices form part of this renewal, uniting transport infrastructure with corporate headquarters for Lucca and Lhyfe. By incorporating one of France’s largest bicycle parks, with 1,470 spaces, the project actively promotes sustainable mobility. The hub also integrates bus facilities, car rental services, and pedestrian connections, making it a central node in the city’s transportation ecosystem.

Vertical Mixed-Use Design

The project rises across nine levels: four dedicated to the multimodal hub and five to office spaces. The vertical layout reduces ground coverage, fostering efficient urban density. Accessibility defines the design, with ramps, escalators, and moving walkways creating seamless circulation. This approach embodies inclusivity and efficiency, presenting a fluid architectural experience that responds to the rhythm of modern urban life.

Flexibility and Openness

The hub’s concrete post-and-beam structure allows for long spans, flexible layouts, and visual openness. Large bay windows and curved lines establish direct connections with public space, inviting light and movement into the interiors. The “Grand 8” bicycle parking loop—visible from the mezzanine lobby—anchors the hub as both a functional and symbolic feature. By decompartmentalizing uses, the project fosters interaction and flow across spaces.

Offices Rooted in Domesticity

Above the transport layers, the offices adopt a human-centered design. Outdoor terraces extend the work environment, encouraging informal exchanges and a balance between professional and social life. Raw materials—wood, terracotta tiles, and vegetation—establish warmth and familiarity, moving away from cold corporate typologies. Exterior circulation reinforces movement and spontaneous encounters, shaping a permeable architecture that resonates with the energy of the district.

Visible Wood as an Architectural Statement

Inside, the offices are a manifesto for timber architecture. Solid wood structures and CLT floors remain exposed, expressing material honesty and environmental responsibility. Networks are concealed within raised floors, freeing up volumes and highlighting the beauty of raw wood. The luminous interiors, combined with natural ventilation, create flexible and health-oriented workplaces, aligning architecture with well-being.

The Collective Rooftop Garden

Twelve meters above the city, a 1,690 m² rooftop garden crowns the building. This elevated green space enhances biodiversity, improves thermal comfort, and offers panoramic views of Nantes. Beyond ecology, it functions as a communal space for employees and visitors, fostering social interaction and reinforcing the project’s commitment to shared well-being. With regional plantings and local stone, the garden pays homage to the cultural and natural identity of the Loire region.

Sustainable and Off-Site Construction

The project demonstrates environmental responsibility through off-site construction techniques. Prefabricated timber facades, CLT floors, and laminated wood structures were manufactured regionally, reducing construction time and environmental impact. This modular approach ensured precision and quality while minimizing disruption in the dense urban site.

The Multimodal Hub and Offices redefine sustainable office architecture in Nantes, blending mobility, ecological responsibility, and workplace well-being. More than a functional building, it is a living manifesto for the future of urban development—flexible, inclusive, and deeply connected to its city.

All Photographs are works of  Cyrille Weiner, Stéphane Chalmeau