In the Marne, these houses will display the highest level of energy performance in France

"This is a first in the Marne , it doesn't exist anywhere else in the country. In terms of carbon emissions, we are going to build the first houses that comply with the level applicable in 2031 of the RE (environmental regulations) 2020: the highest level of performance. The challenge is also to improve energy quality," rejoices Jérôme Florentin, the project management director at Plurial Novilia. To carry out this project, the social landlord relied on the expertise of the start-up Inergeen, based in the Marne. The latter specializes in the design of modular and eco-responsible housing.

Two timber-framed houses will thus see the light of day as part of the “Les Promenades de Damoiselle” development project in Bétheny (Marne), near Reims. On one side, a 110 m2 type 5 house and on the other, a 70 m2 single-storey T3 house will be built in this district. “The modules will be manufactured in a factory in Alsace. They will then be assembled on site for three weeks. This will save 4 to 5 months compared to a traditional construction,” reveals Jérôme Florentin. The delivery of these two houses is planned for November 2025. A deadline of nine months: unbeatable in terms of construction site.

But the number one issue is elsewhere because these houses have unbeatable energy standards. "Gradually," explains Jérôme Florentin, "we have set up technical solutions to achieve these standards. It's reassuring to see that we can do it. Faced with climate challenges, we are forced to anticipate and revolutionize our way of building. We have optimized and enhanced all the materials. The frame and insulation are all bio-sourced."

In terms of performance, the houses will integrate a heat pump system, a thermodynamic water heater and photovoltaic panels will be on the roof. "These will power our energy systems and this will be shared with other buildings in the area," adds Jérôme Florentin. A collective self-consumption system that should therefore benefit all eligible buildings in this new district of Bétheny.