New Construction

  • Building Type : Isolated or semi-detached house
  • Construction Year : 2021
  • Delivery year : 2022
  • Address 1 - street : RUE RENE DUMONT 49070 BEAUCOUZÉ, France
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.

  • Net Floor Area : 130 m2
  • Number of Dwelling : 1 Dwelling

Proposed by :

Certifications :

  • Primary energy need
    48 kWhep/
    (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

The Empreinte house is an initiative designed and piloted by ERB, a General Construction Company from Chalonnes-sur-Loire (Maine et Loire).

The challenge taken up by Empreinte was to show that it is possible to rethink the impact of construction, alone responsible for nearly 20% of carbon emissions in France, that operational solutions exist to respond to the environmental emergencies of the sector. The project was designed as a demonstrator of new building technologies.

The project finally brought together a collective of 25 actors (start-ups, SMEs and multinationals) from the Pays de la Loire Region, with complementary know-how and expertise.

This network has enabled the construction of a 130 m² detached house with a very refined architectural style.

All the techniques and materials have been sourced and selected on the basis of very precise specifications combining circular economy, energy and environmental performance parameters.

At each stage of the project, innovative solutions have been deployed to reduce the carbon footprint of the construction as much as possible while optimizing the comfort of the inhabitants.

  • Empreinte called on Terra Innova to extract the earthwork, which was then reused by neighboring agricultural land.
  • The foundations and the concrete slab made it possible to test Neolith aggregates for the first time, resulting from the fossilization of waste, a new technology that launches a local and circular waste economy.
  • The walls were made of recycled polymer foam . They were bred in additive construction (3D printing) by Batiprint 3D .
  • The wall insulation is made of recycled PET, the roof insulation is made of cellulose wadding.
  • All the interior paints of the house are paints recycled by Circouleur , recognized for their environmental performance but also for reducing interior pollution. Circouleur is the leading manufacturer of recycled paint in France: a unique concept that allows the recovery and transformation of unused paint.
  • On the interior floors, a clay screed was laid. It allows the Empreinte house to take advantage of the advantages of clay in the home (natural comfort, thermal and humidity regulator, healthy materials, no VOCs, etc.). The screed was made by Argilus , the leading French manufacturer of ecological clay-based coatings and materials.
  • ERB has worked with Biosfaire , which brings together a set of suppliers of biobased products for construction. The Biosfaire teams, for example, suggested using cork for the floors in the rooms.

The green spaces of the land, designed as integrated into the plans of the house, were studied by Other Landscapes in order to develop them and optimize the opportunities for permaculture (sloping roof to collect rainwater, selected species, etc.).

Beyond the construction site, Empreinte also called on several local players to furnish the house , seeking solutions in line with the construction approach implemented . We find in particular Revisit (reuse, circular economy, etc.).

Visit the project website

See more details about this project

Photo credit



Construction Manager


    Environmental consultancy

    ALTER, anjou loire territoire

    Developer in charge of the Echats eco-district on behalf of the town hall of Beaucouzé


    Anjou Béton

    concrete supplier



    Specialist in electrical equipment and home automation


    MP Maçonnerie Project


Energy consumption

  • 48,00 kWhep/
  • RT 2012


    • Heat pump
    • Heat pump
    • No cooling system
    • Double flow heat exchanger
    • No renewable energy systems

Urban environment

  • 340,00 m2
  • The project is located in the town of Beaucouzé (Maine-et-Loire) which is part of the Angers attraction area. In this city, special attention is paid to the well-being of the inhabitants, in particular thanks to more than 40 hectares of parks and gardens. It is also an attractive economic zone with many infrastructures and the establishment of companies.

    As part of its environmental policy, the city is carrying out 3 major programs to promote sustainable housing and limit the artificialization of soils. Empreinte is located in one of these projects, the Nouveaux Echats eco-district, which is implementing a strategy of densification, sustainable development and citizen participation.




    2A rue de l'embranchement - 67116 REICHSTETT

    Aménagement extérieurs / Gestion des eaux pluviales

    VMC thermodynamic double flow

    The GECO PKOM4 classic is a 4 in 1 system.
    - It ensures the renewal of the air thanks to its double flow ventilation function.
    - It heats and cools the air via an Air/Air heat pump
    - It ensures the production of DHW via an Air/Water heat pump

Energy bill

  • 500,00

Reuse : same function or different function

    • Isulation

    The PET foam used for the insulation of the house comes from the recycling of 15,000 plastic bottles.

Reasons for participating in the competition(s)

EMPREINTE in a few figures is:

  • More than 20 collaborating partners on this project
  • Tons of inert waste recovered from construction waste
  • E2C2 building performance
  • Thousands of bottles recycled and reused in home insulation

But still :

  • Rainwater from the roof recovered and reused for the needs of the house
  • A permaculture garden to recreate an ecosystem in the plot of the house

Building candidate in the category

Prix du public

Prix du public

Green Solutions Awards 2022-2023 / France
 building materials and solutions circular economy energy Green Solutions Awards 2022 2023 Green Solutions Awards

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Author of the page
Florence DHOMMÉ

Assistante de projets

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Green Solutions Awards 2022-2023 / France