The State is reforming the DPE and its calculation method: what does this change?

A drastic change for 850,000 homes. Prime Minister François Bayrou announced this Wednesday, July 9, a change in the rules for calculating the energy performance diagnosis , the famous DPE.

The goal: to improve the diagnosis of 850,000 energy sieves, currently rated F or G, which will be given a better rating through a simple accounting sleight of hand.

When small homes heated by electricity were automatically subject to a discount, preferring less energy-intensive gas; this penalty will be eliminated. This Wednesday, Prime Minister Matignon clarified its announcement in a press release.

This development will better reflect the reality of the French energy mix" and correct "an unequal treatment penalizing homes heated by electricity."

For the moment, a decree is planned for September 2025, with implementation starting in January 2026. The government wants to avoid a worsening of the crisis in the rental market, constrained by the bans on renting out G-rated housing since the beginning of 2025, and F-rated housing from 2028.

In Paris alone, this would affect 195,000 apartments, according to the Paris Climate Agency. By changing the calculation rule, these homes are removed from the ban and put back on the market, which will be able to breathe again, with an increase in supply.

For those involved in building thermal renovation, this announcement could have a devastating impact. According to them, this change in calculations only benefits homeowners, who will be able to rent out their homes without restrictions. At least until 2034, if nothing changes.

This development also saves them from having to carry out renovation work to insulate and equip their property. This could be a barrier to energy renovations in homes heated by electricity or fossil fuels, where bills can be high for tenants.