• Building Type : Office building < 28m
  • Construction Year : 2014
  • Delivery year : 2015
  • Address 1 - street : 265 Avenue du président Wilson 93310 SAINT DENIS, France
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.

  • Net Floor Area : 20 600 m2
  • Construction/refurbishment cost : 41 260 000 €
  • Cost/m2 : 2002.91 €/m2

Proposed by :

Certifications :

  • Primary energy need :
    81 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

Developed under real state promotion contract by Nacarat, this set of 20 600 m² of offices divided into four buildings, will host all future services of the SNCF, with capacity for 1600 people.

Designed by the Agency Devillers & Associates and built by Rabot Dutilleul Construction as general contractor, the Monet not only offers spacious and comfortable workspaces around a patio. The program, located in the new business district of Landy, is also fully engaged in urban renewal policy of “La Plaine Saint Denis” and the requalification of the former site of GDF gas plants. Certified Non-residential building under construction- HQE® and Low energy consumption building (BBC Effinergie), it contributes to the energy transition of its territory, as illustrated by the rooftop installation of 595 m² of photovoltaic panels. This "fifth facade" should allow an annual production of 70,000 kWh, redistributed on the public network. A first for Nacarat!

Sustainable development approach of the project owner

A pioneer in the field of eco-design, Nacarat is engaged in a process of social and environmental responsibility, based on ISO 26000 reference. This commitment is definitely illustrated by high environmental and social value-added operations such as Monet . Project stakeholders, MOE, advice, business, were up to the high ambitions of the project yet. The stress. Anxious to anticipate the regulations on energy efficiency, Nacarat designed this project, responding to BBC standards even before the office repository is established. Certified NF tertiary buildings - HQE®, Monet focuses on controlling consumption thanks to increased external insulation. In order to obtain the label Effinergie® BBC, which embodies the reduction of more than 50% of energy consumption reference RT 2005, Monet welcomes 595 m2 of photovoltaic panels on the roof. Annual production is estimated at 70,000 kWh, this electricity is distributed to the public network.

Architectural description

A modular project where transparency and vegetation coexist:
- We imagined an exceptional building by its flexibility. When the SNCF spoke about their interest, we could easily reshape the project to the specific needs of the company, including creating a second input and adding modular meeting rooms. The objective is to think the building over the long term.
- In addition, Monet consists of four buildings open on all four facades, connected by transparent bridges and the center of which extends a patio. The project provides a large place to vegetation; the terraces, roofs and patio will be widely planted promoting rainwater retention and creating an ecosystem pleasant to work.

Building users opinion

Not yet occupied (in September 2015).

If you had to do it again?

Complex project but very well executed: it is a great pride for Nacarat and Rabot Dutilleul Construction. We were referring to the same thing. Maybe taking into account the interest of the territory for the circular economy, integrating waste recycling in concrete by example ... to follow in other projects.

See more details about this project




    Sophie Galmard



    Rabot Dutilleul Construction

    Marc Sanoner

    Green construction site at TP HQE


    Christian Devillers Architecte

    Christian Devillers

    Great architect

    Other consultancy agency


    Anne-Cecile Ledanois

    AMO Eco Construction

Contracting method

Other methods

Energy consumption

  • 81,00 kWhep/
  • 99,00 kWhep/
  • RT 2005

    Heating: 33 kWhEP / m² / year Cooling: ECS 7.9: 4.58 Ventilation: 22 Lighting: 20 Auxiliary: 1.8 PV Production: 7.85

Envelope performance

  • 0,79 W.m-2.K-1
  • Concrete curtain wall cladding effective Alu Glass. High density. See details on thermal study


  • 1,38


    • Urban network
    • Radiant ceiling
    • Fan coil
    • Urban network
    • Urban network
    • Fan coil
    • Double flow heat exchanger
    • Solar photovoltaic
  • 10,00 %
  • See products

    Brise soleil. (voir produits). Inertie lourde.

Biodiversity approach

  • 7 182,00 m2
  • 80,00 %
  • 1 526,00
  • New tertiary area around the Stade de France: -Denis /


    Photovoltaic Module PW6-BIPV1


    Resp Commercial

    Management / Others

    Integrated photovoltaic module to the frame.


    Modelpak 82-58


    Resp Commercial

    Structural work / Passive system

    The blinds Modelpak® 82 and 58 to metal blades are characterized by a desired profile, curved and designed to allow optimum levels of concealment and precise metering of daylight indoors.

    No particular problem

Construction and exploitation costs

  • 4 300 000
  • 52 840 000

Indoor Air quality

    Hygrometric comfort HQE TP validated during the audit


    Visual comfort noticed during audit HQE: "The architect has done a very important work on transparency in the whole building with such all-glass elevator shafts, very open stairs, glass strips end partition to optimize the buildings natural lighting"

    Confort hygrométrique HQE TP validé lors de l'audit

GHG emissions

  • 10,00 KgCO2/m2/an
  • RT calculation

Life Cycle Analysis

Reasons for participating in the competition(s)

Energies Renouvelables : 70000 Kwh/an de production électrique en Photovoltaïque

Zéro énergie : 20 000m² certifié BBC Révov

Santé confort : Certification HQE avec une attention toute particulière de l'architecte Christian Devillers sur le sujet confort/Santé

Troisième révolution industrielle:

- Energie renouvelable

- Efficacité énergétique

Author of the page

  • Rodolphe Deborre

    Directeur Innovation et Développement Durable

  • Other case studies