Plurial Novilia unveils a new modular project with very high energy performance

The project will be launched in the first quarter of 2026 in Bétheny, as part of the development of the Promenades de Damoiselle.

It follows two initial joint projects, a T3 pavilion and an office, completed in spring 2024 in Bezannes.

Plurial Novilia, a subsidiary of Groupe Action Logement, manager of nearly 39 homes in the Champagne-Ardenne and Île-de-France region (Seine-et-Marne and Essonne), today unveiled a new bio-sourced modular construction project in Bétheny.

Carried out in partnership with the company Inergeen, the project aims to build two timber-framed houses built off-site, as part of the Les Promenades des Damoiselles development project. The program aims to be exemplary in terms of energy and the environment, with a high energy performance level RE2020 level 2031 – a first in the Marne.

For Johnny Huat, General Manager of the lessor: "Plurial Novilia has a long tradition in innovation and sustainable construction, which finds a new expression here with this ambitious project carried out with Inergeen. After several projects successfully carried out using 3D concrete printing, we want to experiment in a real situation with the potential of the Woodea concept, always with the idea of ​​consolidating new economic models that could make it possible to produce social or intermediate housing quickly and at a controlled cost, at a time when demand has never been so high and production so low."

Innovative technical choices to improve performance

Woodea is the concept developed by Inergeen to meet the challenge of eco-responsible and economical construction. The concept is based on 3 pillars: a construction in wood frame wall and biosourced insulation prefabricated in the factory, a very high level of thermal and energy performance of the buildings and self-production of energy by photovoltaic panels.

For Olivier Kerrec, founder and CEO of Inergeen: "Our approach is to offer our clients turnkey ecological and economical housing projects, from architectural design to delivery. The challenge is to gain in energy and environmental quality while remaining consistent with market prices. We use an off-site construction process with bio-sourced materials such as wood, which helps to limit the environmental impact and carbon emissions as much as possible. The use of bio-sourced materials also provides increased comfort, particularly in periods of high heat. This is also why we have worked on a variation of the Woodea concept for senior housing, to which it is perfectly suited."

Two models to confirm ambitions

In order to validate the operational relevance of this approach, two Woodea "pilot" houses will be built in modular wood in Bétheny. Marketed as intermediate housing, they will be representative of the individual housing sought by households supported by Plurial Novilia, with on one side a type 5 family house on R+1 of 111m² of living space, and on the other a type 3 single-storey house of 70m² of living space.

For Johnny Huat: "The two models were chosen because they cover a large part of the needs of the current population. The single-storey T3 format is particularly suitable for young couples but also for seniors or people with disabilities, while the T5 format is ideal for families. The latter will also offer a ground-floor bedroom suitable for people with reduced mobility, the whole meeting 90% of the population's needs in terms of typology."

In terms of performance, the houses will integrate a reversible heat pump system for heating and air conditioning, combined with self-production of electricity by photovoltaic panels installed on the roof. This choice will make it possible to achieve unprecedented energy performance, since these will be the first houses meeting the RE 2031 2020 threshold standards to be built in the Marne.

An economic model to be consolidated

The partnership between Plurial Novilia and Inergeen is not new since two buildings, a T3 pavilion and an office, were delivered last spring in Bezannes. Based on a flat roof architecture according to the PLU, an off-site construction and bio-sourced materials, the two buildings display a very high thermal performance and a very low carbon impact (RE2028), thanks in particular to a self-production of 50% of the electricity needs via the photovoltaic roof.

For Fabien Petit, President of Plurial Novilia: "We are delighted with this collaboration with Inergeen and very confident about the experiment that will be conducted on Bétheny. The prototyping will be an opportunity to test the concept in real conditions in order to reduce construction costs in the long term, in particular by using group purchasing with other lessors/builders."

Plurial Novilia aims to eventually offer a catalogue of products (from T3 to T5) for social or intermediate housing projects, accessible in group orders to the subsidiaries of Action Logement du Grand Est and Hauts-de-France initially.