• Building Type : Other building
  • Construction Year : 1977
  • Delivery year : 2021
  • Address 1 - street : Rue du Javelot 75013 PARIS, France
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.

  • Net Floor Area : 400 m2
  • Construction/refurbishment cost : 688 000 €
  • Number of none : 1 none
  • Cost/m2 : 1720 €/m2
  • Primary energy need
    80 kWhep/m2.an
    (Calculation method : RT 2012 )
Energy consumption
Economical buildingBuilding
< 50A
51 à 90B
91 à 150C
151 à 230D
231 à 330E
331 à 450F
> 450G
Energy-intensive building

For this project to renovate a slab pagoda of the "Olympiades" and its transformation into a district management and Brico-theque, the circular economy and the reuse of physical and spatial resources were at the heart of our architectural approach.

First of all, the simple rehabilitation of old buildings by definition questions the ability of existing structures and spaces to reinvent themselves in order to accommodate new uses. This building, originally built by the architect Michel Holley, has been in turn a restaurant, a tea room, and today a bricothèque (collaborative manufacturing workshop), ERP and a room for diverse associations. Thanks to the support of the RIVP, the Javelin project has also made it possible to put into practice the transitional programming of changing spaces, a real challenge for contemporary cities. Indeed, in the summer interstice between the end of studies and the start of construction work, the pagoda has been transformed into an ephemeral cultural space by hosting the works of two painters and sculptors.

Finally, the reuse of materials was at the center of architectural thinking from the first design phases. This reuse is deployed on site along three lines:

  1. Ex-situ reuse: a metal staircase was disassembled, packaged and reassembled on another site.
  2. In-situ reuse: the existing glazing of the building has become interior glass partitions.
  3. Out-sourced reuse: the cladding of the project is made with parquet slats from another site under deconstruction.

See more details about this project


Photo credit

Christophe Demonfaucon


    Régie Immobilière de la Ville de Paris



Construction Manager


    Structures calculist


    Christophe LEPREUX


    Structural, thermal and fluid design office

Type of market


Allocation of works contracts

Build and sell construction

Energy consumption

  • 80,00 kWhep/m2.an
  • RT 2012

  • 200,00 kWhep/m2.an


    • Heat pump
    • Individual electric boiler
    • Reversible heat pump
    • Single flow
    • Heat pump

Urban environment

  • 7 981,00 m2
  • 2,40 %
  • The project is located in the Olympiades district, Paris 13th, built in the mid-1970s by architect Michel Holley. It represents a rare example in Paris of Dalle town planning, driven by modern thinking. The "rue du Javelot", which gives its name to the project, is in fact never visible, located under the project and disappears into the slab. The district is also very particular within the capital in terms of its architectural diversity and the many modernist achievements it presents.

    Despite their historical quality, large housing estates are often decried, in particular by the omnipresence of concrete and the loss of the human scale. The "rue du Javelot" renovation project thus seeks to contrast with this mineral urban context through the use of a visible bio-sourced material and the detail of a non-standard slatted cladding.


Reuse : same function or different function

    • Facades
    • Locksmithing-Metalwork
    • Outdoor joineries
    • Partitions

    • Facade insulating glass frames: 34 m²
    • Softwood flooring: 1088 mL
    • Curved steel roof frames: 7 units

    • Insulating glazed facade frames reused on site as interior glazed partitions,
    • Resinous wood parquet from a Parisian site transformed into facade cladding and filling of railings,
    • Curved steel roof frames suitable for integration of new insulating glazing.



Environmental assessment

    The reuse operation saved the equivalent of 30,154 kilometers traveled by a small car, or 34 Paris-Nice, 6,202 rectangular bathtubs filled with water and 5 years of household waste for a Frenchman.

Economic assessment

  • 98 216
  • 10 %
  • -35 000

Building candidate in the category

Prix du public

Prix du public

Green Solutions Awards 2022-2023 / France
 renovation building reuse wood materials and solutions circular economy waste energy tertiary building Circular Building Trophies

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minh man nguyen

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Green Solutions Awards 2022-2023 / France