Condominium Lamartine / Stalingrad

  • Building Type : Collective housing < 50m
  • Construction Year : 1974
  • Delivery year : 2018
  • Address 1 - street : 93310 PRE-SAINT-GERVAIS, France
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.

  • Net Floor Area : 2 145 m2
  • Construction/refurbishment cost : 553 000 €
  • Number of Dwelling : 33 Dwelling
  • Cost/m2 : 257.81 €/m2
  • Primary energy need :
    101 kWhep/
    (Calculation method : RT existant )
Energy consumption
Economical buildingBuilding
< 50A
51 à 90B
91 à 150C
151 à 230D
231 à 330E
331 à 450F
> 450G
Energy-intensive building

The condominium, located in Pré-Saint-Gervais, has embarked on a renovation of its heritage in 2015-2016 by conducting an energy and architectural audit.
This global audit, carried out by the companies, PAZIAUD, Project Manager, and ENERGIEPULSE, specialist in financing, highlighted the potential of energy rehabilitation of buildings and their architectural revalorization, while respecting the financial capacities of the co-owners.

The co-ownership continues with the grouping in the design phase which develops an ambitious project of thermal improvement of the building: the technical choices were directed towards the strong reduction of the needs for heating by a complete heat treatment of the envelope of the buildings (facades, joinery , roofing, floors) before considering an improvement of the source of energy production by the installation of a gas condensing boiler. The quality of indoor air has not been forgotten with the implementation of moisture-sensitive mechanical ventilation in the homes.

The energy renovation allows to reach a level of performance "Building Low Consumption" with an energetic gain of more than 50%.

The renovation process was carried out thanks to a strong involvement of the co-ownership, in particular the union council, which carried this project for years. Numerous work meetings and educational presentations made it possible to obtain the co-owners' adhesion, in particular for the collective replacement of all joineries, ie an average share of € 17,000 including tax.

The situation of the co-ownership and the project allow it to be part of collective incentives incentive schemes: Sustainable Copro (IDF Region) and Living Better Joint Ownership (ANAH). The works were voted by the co-owners in November 2017 and were completed in December 2018.

Sustainable development approach of the project owner

The objective of the Project Management is to maintain its existing heritage and improve the comfort of occupants while reducing energy consumption. The initial constraints of heritage maintenance (renovation of facades, waterproofing of roofs) gradually evolved into an energy renovation project with a technical, architectural and financial approach.

The technical choices were directed towards the sharp reduction of the heating needs by a complete heat treatment of the building envelope (facades, joinery, roofing, floors) before considering an improvement of the source of energy production by the installation of a gas condensing boiler. The quality of indoor air has not been forgotten with the implementation of moisture-sensitive mechanical ventilation in the homes.

Architectural description

The residence includes 2 adjoining buildings built in 1974 for use as a collective dwelling:

  • Stalingrad building: 29-31 Stalingrad street: 1 street access, 1 stairwell, 7 levels, 25 apartments
  • Lamartine building: 2 rue Lamartine, 1 street access, 1 stairwell, 2 levels, 8 apartments.

The residence is built in Pré-Saint-Gervais in a very heterogeneous environment composed of suburban areas, small collectives and larger complexes. The renovation works with thermal insulation from the outside allow a sober architectural revaluation, by the choice of a set of shades with two colors: light gray and white with several reminders at the singular points of the facades (railings, bibs in light gray, louvers in white).

See more details about this project


    Syndic Copropriété Lamartine/Stalingrad

    Elisabeth BERROU

Construction Manager


    Assistance to the Contracting Authority


    Fatima-Zohra MEKREBI - merkrebi (at)

    Financial engineering


    Primiso (Lot 1 : mandadataire groupement Primiso-Metin-AEF)

    Amor ZROUGA

    Façades / Second Work / Locksmithing / Ventilation


    Metin (Lot 1 : membre groupement Primiso-Metin-AEF)

    Ozcan YILDIRIM


Contracting method

Separate batches

Type of market

Global performance contract

Energy consumption

  • 101,00 kWhep/
  • 170,00 kWhep/
  • RT existant

  • 229,00 kWhep/


    • Condensing gas boiler
    • Condensing gas boiler
    • No cooling system
    • humidity sensitive Air Handling Unit (hygro A
    • No renewable energy systems

Urban environment

    Existing building located in a zone of mixed density: small collective, large group and suburban area




    Patrick FRAISSE - patrickfraisse (at)

    HVAC, électricité / ventilation, cooling

    Hybrid natural ventilation

    Product suitable for improving ventilation in an existing building

Indoor Air quality

    The indoor air quality was treated by the implementation of humidity-sensitive mechanical ventilation by sweeping (dry rooms to damp rooms). A low pressure solution was implemented on a building, a hybrid natural solution was put on the second building.

GHG emissions

  • 21,00 KgCO2/m2/an
  • RT-Existent

Reasons for participating in the competition(s)

La copropriété Lamartine/Stalingrad s'est engagée sur un bouquet de travaux de rénovation regroupant pas moins de six actions différentes d'amélioration énergétique !
Dans le respect de la démarche NégaWatt, les choix techniques se sont orientés vers la forte diminution des besoins de chauffage par un traitement thermique complet de l'enveloppe des bâtiment (façades, menuiseries, toiture et plancher) avant d'envisager une amélioration de la source de production d'énergie par la mise en place d'une chaudière gaz à condensation. La qualité de l'air intérieur fut également au centre des préoccupations avec la mise en oeuvre d'une ventilation mécanique hygroréglable dans les logements.
La rénovation énergétique permet ainsi d'atteindre un niveau de performance "Bâtiment Basse Consommation" avec un gain énergétique de plus de 50%.
La démarche de rénovation ambitieuse n'a pu se faire qu'avec un forte implication de la copropriété, en particulier du conseil syndical qui a porté ce projet pendant de nombreuses années. De nombreuses réunions de travail et présentations pédagogiques ont permis d'obtenir l'adhésion des copropriétaires, en particulier le remplacement collectif de l'ensemble des menuiseries.
Les aides apportées par les pouvoirs publics ont été décisives avec un taux d'aides collectives atteignant 50% du budget de l'opération.

Building candidate in the category

Energy & Temperate Climates

Energy & Temperate Climates

Users' Choice

Users' Choice

Green Solutions Awards 2019 - Buildings

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