Last modified by the author on 07/07/2015 - 11:03

New Construction

  • Building Type : Office building < 28m
  • Construction Year : 2015
  • Delivery year : 2015
  • Address 1 - street : 83-85 rue Henri Barbusse 92735 NANTERRE, France
  • Climate zone : [Cfc] Marine Cool Winter & summer- Mild with no dry season.

  • Net Floor Area : 11 183 m2
  • Construction/refurbishment cost : 51 000 000 €
  • Number of Work station : 859 Work station
  • Cost/m2 : 4560.49 €/m2

Proposed by :

Certifications :

  • Primary energy need
    69.18 kWhep/
    (Calculation method : RT 2005 )
Energy consumption
Economical buildingBuilding
< 50A
51 à 90B
91 à 150C
151 à 230D
231 à 330E
331 à 450F
> 450G
Energy-intensive building

This building of 11 200m², is located on the historic site of old rusk "Heudebert" , old Nanterre. It becomes the new headquarters of the company GTM Bâtiment. While maintaining part of it original façades, this renovation is a key element of this area urban renewal. Modernes, bright, spacious, bright and comfortable, offices will include a canteen, a cafeteria and indoor (gym) and outdoor (garden, planted terraces) wellness facilities.Certified BREEAM, HQE and BBC (Low energy building) , this project has also been part of a "intrinsic energy performance warranty" process to enhance its biodiversity. This process was developed in a parternship with The National Museum of Natural History .

Sustainable development approach of the project owner

"Foncière des Régions" as general contractor is committed through its policy on its green heritage:
The offices represent 65% of share heritage of the group.
The policy of sustainable development of Foncière des Régions is reflected in particular by a continuous improvement of environmental performance of this office park, throughout the life cycle of buildings.
This approach places the comfort and health of the user to the center and takes into account all the environmental dimensions: choice of locations, equipment and materials, based on life cycle assessment (LCA - to measure and reduce the impact) or the digital building modeling (BIM - to optimize the control of each step).
"Foncière des Régions" has met one year ahead , the goal of holding 50% of Legacy Land Offices Franc at the end of 2015.
This park "greening" strategy of Foncière des Régions is also deployed in other activities of the group products.

Architectural description

This building of 11,200 sqm, located on the historic site of the old rusk Heudebert in the old Nanterre, becomes the new headquarters of the company "GTM Bâtiment". While retaining some of the original façades, this renovation is a key element of the urban renewal district. Modern, bright and spacious, these offices include a company restaurant and a cafeteria on the ground floor. The building rests on a basement level sheltering 193 parking spaces.

Building users opinion

The building is comfortable thanks to:
Its internal lighting atmosphere.
Its qualities of acoustic isolation from the street as between spaces
It best hygrothermal comfort with the use of reversible radiant ceiling
It quality green spaces including a roof terrace
Olfactory comfort guaranteed by ventilation rates higher than the minimum regulatory, and the use of materials with low VOC emissions

See more details about this project


Contracting method

Lump-sum turnkey

Energy consumption

  • 69,18 kWhep/
  • 184,51 kWhep/
  • RT 2005

    Heating: Cooling 52.5% 3.9% Production ECS: Fans 7%: 20.7% Lighting: 10.8% Auxiliary: 5.1%

Real final energy consumption

    66,76 kWhef/

Envelope performance

  • 0,55 W.m-2.K-1
  • High thermal inertia building with its exterior insulation.
    Thermal insulation of the current wall on the outside provided by 180 mm insulation with Lambda 0.032 W / (mK) giving a Up = 0.17 W / (m².K).
    Reinforced sunscreen on exposed facades (BSO).


  • 0,80
  • - Widget - Display consumption on TV - multi-business controls (lighting, heating, blinds)

More information

Followed by GTB end consumption through an extended commissioning. The construction process also participate in a certification "OXYGEN" , an eco-commitment of Vinci Construction France, which secured the building performance in its operation.


    • Gas boiler
    • Water radiator
    • Electric heater
    • Radiant ceiling
    • Fan coil
    • Individual electric boiler
    • Solar Thermal
    • Water chiller
    • Fan coil
    • VAV Syst. (Variable Air Volume system)
    • VRV Syst. (Variable refrigerant Volume)
    • Radiant ceiling
    • compensated Air Handling Unit
    • Double flow heat exchanger
    • Solar Thermal
  • 5,60 %

Smart Building

    Regulation and Building Management System (GTB) energy efficient class A. Implementation of environmental awareness of the user devices including a dynamic display of global consumption, batch and office. Setting up a portal

    Individual control systems available to offer users an optimized ergonomics to quickly and simply act on all comfort parameters. The touch tablet,provides an icon that indicates the impact of the set of variations on the energy efficiency of the building

Urban environment

  • 2 221,00
  • The project is in a highly urbanized environment with shops, services and transport nearby


    Innovative vegetated roof terrace


    Gros œuvre / Charpente, couverture, étanchéité

    On this pilot project, the two roof levels were treated differently:
    The first level is an accessible roof terrace with a semi-intensive type of vegetation with many biodiversity-friendly developments (bundles of firewood, wetlands, stones, sand). This level also features a roof garden to sensitize users of biodiversity and urban agriculture.
    The second level roof (roof technology) was treated by the implementation of an innovative unplanted substrate allowing colonization by spontaneous vegetation. This level also has bird nest boxes and bat.

    The product was created through the involvement of all stakeholders of the project and is very well received by users, aware of the improvement of the living environment that this development represents.

    Energy recovery


    Génie climatique, électricité / Ventilation, rafraîchissement

    Heat recovery unit dedicated to professional kitchens

    Product well accepted by the project stakeholders

Indoor Air quality

    Air flow regulating devices according to the CO2 concentration in the high occupancy areas.


    Terminal processing device by reversible radiant ceiling technology offering different advantages: - reduced air speeds - Homogeneity of temperature in space - optimized Perceived temperature - dust brewing Limitation

GHG emissions

  • 6,00 KgCO2/m2/an
  • Calculation method RT CSTB

Reasons for participating in the competition(s)

Health and comfort:

  • For this project GTM Bâtiment is at the same time co-promoter (through its branch ADIM Concepts, and a partnership with Foncière des Région) and builder andfuture users of the building. Therefore, the comfort of the employees wasplaced at the heart of the reflection from the sketch up to operation and maintenance contracts.
  • Biodiversity is present in the building design: with a plot 40 % vegetated and green accessibleterraces including a collective vegetable garden, a collective work with The National Museum of Natural History allowed to advocate improvements protecting local fauna and flora while minimizing theimpact of technical of the equipment project.
  • Thesearch for an optimum between thermal and lighting comfort was found to meetthe requirements of the HQE and BREEAM certifications.

Smart Buildings:

  • Implementing OXYGEN, the eco-design process of VINCI Construction France that aimed to ensure the intrinsic performance of buildings. With a personalized view of their consumption in real time, the user is aware of the impact of his behaviour on the overall performance of the building.


Building candidate in the category

Smart Buildings

Smart Buildings

Santé et confort

Santé et confort

Green Building Solutions Awards 2015

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benjamin masse

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Green Building Solutions Awards 2015