RE2020: what this regulation changes for housing

RE2020 is the environmental regulation governing new construction in France since 2022, succeeding RT2012, which focused mainly on thermal performance. Its major difference: it now factors in a building’s carbon impact across its entire life cycle, from material manufacturing to end of life, rather than just its operational energy consumption.

Understanding the topic

In practice, this means construction material choice is now assessed alongside insulation and heating systems. A material with a low manufacturing carbon footprint, such as wood or recyclable steel, becomes a compliance criterion rather than just an aesthetic or environmental argument.

Deep exploration

The regulation also requires better summer comfort, in response to increasingly frequent heatwaves: buildings must now limit hours of thermal discomfort without systematically relying on air conditioning, which pushes orientation, sun protection and thermal mass to be considered from the design stage.

For prefabricated modular housing, this regulatory shift fits naturally with an approach already common in the sector: workshop manufacturing limits construction waste, a light steel structure is easier to recycle at end of life, and reinforced standard insulation directly addresses thermal performance requirements.

Practical guidance

Understanding RE2020, then, helps evaluate a construction project (modular or traditional) not just on price or looks, but on its long-term environmental coherence. Our habitats comply with this regulation, details of our certifications are available on our Trust Center.

Architectural perspective

An environmental regulation is never just an administrative constraint: it formalises, often belatedly, what responsible architecture should already be pursuing on its own.