France – Travaux de construction – Nantes - Cité des Imaginaires - Travaux de restructuration du CAP 44
AI summary
This tender concerns the restructuring of CAP 44, a historic 1895 concrete building in Nantes, involving partial demolition and extension to house the Cité des Imaginaires cultural complex. The project will accommodate the renewed Jules Verne Museum, temporary exhibition space, media library, mediation facilities, and a café-restaurant across 7,670 m² of floor area.
Construction companies and specialized contractors with expertise in structural restoration, facade installation, mechanical systems integration, and experience on complex cultural or heritage projects.
Bidders must be qualified contractors capable of executing structural works, timber framing, metallic facades, joinery, electrical systems, and HVAC-plumbing installations. Experience with heritage building renovation and cultural facility projects is expected.
Frequently asked questions
What is this tender about?
This tender concerns the restructuring of CAP 44, a historic 1895 concrete building in Nantes, involving partial demolition and extension to house the Cité des Imaginaires cultural complex. The project will accommodate the renewed Jules Verne Museum, temporary exhibition space, media library, mediation facilities, and a café-restaurant across 7,670 m² of floor area.
What are the requirements for suppliers?
Bidders must be qualified contractors capable of executing structural works, timber framing, metallic facades, joinery, electrical systems, and HVAC-plumbing installations. Experience with heritage building renovation and cultural facility projects is expected.
What type of company should bid?
Construction companies and specialized contractors with expertise in structural restoration, facade installation, mechanical systems integration, and experience on complex cultural or heritage projects.
Who is the buyer?
The buyer is Nantes Métropole Amenagement.
When does this tender close?
Submissions close on September 15, 2026.
What is the estimated value?
The estimated value is 0 EUR.
Restructuration du CAP 44 (structure béton de 1895) avec démolition partielle et réalisation d'extension pour accueil de la Cité des imaginaires. L'ERP accueillera le Musée Jules Verne renouvelé, un espace d'exposition temporaire, une médiathèque, des espaces de médiation et de diffusion et un café-restauration. Surfaces planchers : 7 670 m². Les travaux sont répartis en 15 lots. La présente consultation concerne uniquement les lots suivants : Lot 1 Macro lot structure / Lot 2 Structure Bois - FOB (Façade Ossature Bois) - MEX BOIS (Menuiserie Extérieure Bois) - Lot 4 Façade métallique / Lot 5 Menuiseries extérieures / Lot 8 Menuiseries intérieures / Lot 12 Electricité / Lot 13 Chauffage -Ventilation Climatisation - Plomberie. Les autres lots font l’objet d’une consultation distincte, lancée selon une procédure adaptée.
Lot 1 - Macro lot structure
₋ Déconstruction (technicité supérieure) ₋ Maçonnerie et ouvrage en béton armé (technicité supérieure) ₋ Structures métalliques (technicité supérieure) ₋ Restructuration ouvrage béton armé (technicité exceptionnelle) - Traitement de structures Bétons existantes (certification CEFRACOR niveaux 1 à 3)
Lot 2 - Structure Bois - FOB (Façade Ossature Bois) - MEX BOIS (Menuiserie Extérieure Bois)
Fourniture et pose charpente bois traditionnelle (technicité confirmée) / Fourniture et pose de façades et menuiseries extérieures à ossature bois (technicité supérieure)
Lot 4 - Façade métallique
Fabrication et pose de parements de façade métalliques (technicité confirmée) / Fourniture et pose d’ensemble menuisé métallique acier (technicité confirmée
Lot 5 - Menuiseries extérieures
₋ Fourniture et pose de menuiseries extérieures acier- aluminium (technicité confirmée)
Lot 8 - Menuiseries intérieures
Fourniture et pose de menuiseries intérieures
Lot 12 - Electricité
Travaux d'installation électrique (courants forts et courants faibles)
Lot 13 - Chauffage – Ventilation - Climatisation - Plomberie
Travaux d'installation de chauffage, ventilation, Climatisation, Plomberie et sanitaires.
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