Redevelopment and upward extension of the conservatoire and auditorium in Annemasse

Built in the early 1980s, the conservatoire is restructured and extended upwards to accommodate changing practices and an increase in student numbers. The reorganisation clarifies the distribution of the three programmes—the conservatoire, the municipal auditorium and the Diocese premises—and improves their relationship with the public realm. The energy renovation provides an opportunity to restore overall coherence by drawing on the qualities of the existing architecture, particularly the distinctive use of circular façade openings. The timber-framed rooftop extension is differentiated from the renovated volumes and clearly expresses the contemporary intervention.

  • Existing facade Inter-Municipal Conservatory in Annemasse, with a pale green ribbed façade, three circular timber-framed windows and planted frontage.
    Process diagram for Annemasse Inter-Municipal Conservatory renovation, showing a new rectangular volume inserted between existing buildings.
    Annemasse Inter-Municipal Conservatory: white façade with circular windows, glazed upper floor and planted forecourt crossed by a paved path.
    Ilulissa
  • Existing facade Inter-Municipal Conservatory in Annemasse, with a pale green ribbed façade, three circular timber-framed windows and planted frontage.
    Process diagram for Annemasse Inter-Municipal Conservatory renovation, showing a new rectangular volume inserted between existing buildings.
    Existing room in Annemasse Inter-Municipal Conservatory: studio with three circular windows, radiators, tiled ceiling and resilient flooring.
  • Site plan of the Inter-Municipal Conservatory renovation in Annemasse, highlighting the building footprint within a landscaped urban block.

    Site plan

  • Axonometric drawing of Annemasse Inter-Municipal Conservatory renovation, showing linked volumes, pitched roofs and circular windows.

    Axonometric view

  • Floor plan for the renovation of Annemasse Inter-Municipal Conservatory, showing linked wings, central circulation and landscaped surroundings.

    Ground floor plan

  • Floor plan of the Inter-Municipal Conservatory renovation in Annemasse, showing a central auditorium, adjoining rooms and circulation.

    First floor plan

  • Technical roof plan of Annemasse Inter-Municipal Conservatory, showing linked pitched-roof volumes and a rectangular wing with internal rooms.

    Second floor plan

  • Roof plan of the Inter-Municipal Conservatory renovation in Annemasse, showing linked pitched-roof volumes and adjacent modular buildings.

    Roof plan

  • Technical sections of Annemasse Inter-Municipal Conservatory renovation, showing rehearsal rooms, circular windows, stair cores and auditorium.

    Section

  • Technical elevations of Annemasse Inter-Municipal Conservatory renovation, showing stepped volumes, circular windows and glazed upper levels.

    South and north elevation

Project details

  • Address
    7 rue des Savoie, Annemasse, Haute-Savoie
  • Dates
    Under construction since 2026
  • Programme
    Redevelopment and upward and lateral extension of the conservatoire, refurbishment of the auditorium and diocesan premises
  • Surface area
    2,441 m2
  • Budget
    5.9 M€
  • Regulatory framework
    RT Existant – 70 %
  • Carbon emissions
    891 kgCO2eq/m2
  • Energy consumption
    33.4 kWh/m2/year
  • Labels
    Bâtiment biosourcé niveau 2
  • Notable details
    Partially occupied site, timber vertical extension with galvanised steel cladding, external thermal insulation and glazed terracotta slip façade to the existing building, reuse

Credits

  • Client
    Annemasse Les Voirons Agglomération, Ville d’Annemasse
  • Project management
    Tectoniques (architect, lead), Tectoniques Ingénieurs (cost consultant, MEP engineering, sustainability consultant, timber structure, concrete structure), Architecture et Technique (Scenography), Venathec (acoustic consultant), Namixis (Fire Safety Systems), Ohm'r (electrical engineering)
  • Photography
    Pierrick Durand-Glouchkoff