Increase in the number of DPEs carried out in the first quarter of 2025 in four key regions, but decline in all others

The analysis highlights a significant increase in the number of Energy Performance Diagnostics carried out in four French regions: Corsica, Grand Est, Île-de-France and Brittany, but a significant decrease in the other regions.

Concentrated and significant increases

In a national context that remains cautious, four French regions stand out for a significant increase in the volume of DPEs carried out. Below are the results of the study for the first quarter of 2025 on the number of DPEs carried out in France by all diagnosticians:

• Corsica: + 26% of DPE completed
• Grand Est: + 18%
• Île-de-France: + 12%
• Brittany: +9%

These results echo several recent publications and studies carried out by leading real estate institutions reporting a moderate but real rebound in real estate transactions in certain tense or tourist areas, particularly in Île-de-France, on the Breton coast and in Corsica.

For Seydi Eren, President of DIAGADOM: "These regions reflect what we call 'pulse zones': where real estate activity is restarting, the DPE is once again becoming an immediate reflex. Energy diagnostics are now an early marker of activity on the ground."

A general decline in the rest of the country

At the same time, other metropolitan regions are experiencing an average drop of 14% in the number of DPEs carried out over the same period, compared to the first quarter of 2024. This decline is explained in particular by:

• The slowdown in the existing real estate market in several areas
• Postponements of sales or rental projects in the face of the economic context
• Owners' perception of regulatory deadlines remains unclear

In all other regions, the number of DPEs carried out in the first quarter of 2025 is down compared to 2024:

• Slightly in PACA (-1%) and Bourgogne-Franche-Comté (-2%)
• Strongly in Occitanie (-6%), Pays de la Loire (-11%), Nouvelle Aquitaine (-12%), Auvergne-Rhône-Alpes (-15%), Hauts-de-France (-15%)
• Very strongly in Normandy (-22%) and in the Centre-Val-de-Loire by -23%

This study therefore reveals that the recovery of the real estate sector is very uneven. While it is present in four French regions, it shows significant local disparities and is not present in the other nine metropolitan regions.

Given the latest analyses from the main agency networks confirming a slight easing of credit rates and an increase in transaction volumes in certain regional metropolises, it will be interesting to see whether, in the second quarter of 2025, the potential acceleration is confirmed even for these 9 other regions.

The DPE as an advanced market barometer

The DPE is more than ever an indicator of real estate activity but also a strategic tool for anticipating regulatory changes linked to energy renovation, in particular with the 2028 deadline for housing classified E or higher.

For Seydi Eren, co-founder of Diagadom: "For professionals, the DPE is no longer a simple technical document. It is a trigger for work, a sales argument, a negotiating lever, and even a depreciation factor if it is poorly anticipated. Our role is to help the market integrate this tool into a proactive approach."

DIAGADOM also reveals an increase in G labels in five French regions in the first quarter of 2025

A marked regional dynamic

Contrary to the national downward trend, five regions recorded net growth. These are the five regions below:

• Grand Est: +92% of G labels awarded
• Brittany: +8%
• Burgundy-Franche-Comté: +3%
• Pays de la Loire: + 2%
• Île-de-France: +2%

A warning signal on the old housing stock

The G label, the lowest energy rating, is assigned to the most energy-intensive homes. Since the Climate and Resilience Act came into force, properties classified as F or G have been subject to increasing restrictions for rental and sale, with a gradual ban schedule starting in 2025.

The study carried out by DIAGADOM highlights a worrying reality: the stock of very poorly classified housing remains high in certain areas, particularly in rural or peri-urban areas with older housing stock, or in towns where aging condominiums are rarely renovated.

An uneven explosion in the number of G-rated dwellings linked to the growth in the number of DPEs in certain tourist areas

This study also reveals that the recovery of the real estate sector is very uneven.

These results echo the results of the study conducted by DIAGADOM concerning the increase in the number of DPEs observed in certain regions as well as the latest studies published by notaries reporting a moderate but real rebound in real estate transactions in certain tense or tourist areas, notably in Île-de-France, on the Breton coast and in Grand Est, a region bordering Germany and very dynamic in terms of real estate activity.

The driving territories of the recovery

Based on the analysis of the volume of G labels allocated, the study conducted by DIAGADOM reveals a direct correlation between the market rebound and the increase in technical interventions prior to sales or rentals.

For Seydi Eren, President of DIAGADOM: "In these five regions, we are seeing a significant increase in requests for diagnostics, often linked to a recovery in transactions. These are early signals, observable even before the publication of notarial statistics."

The increase in the number of DPEs, G labels awarded and the market recovery can be explained differently depending on the region:

• In the Grand Est region, through a revitalization of sales in the old stock, driven by attractive prices and a growing interest in energy renovation
• In Île-de-France with a moderate but real recovery in several departments of the outer suburbs, notably in Val-d'Oise, Essonne and Seine-et-Marne
• In Brittany, through sustained demand in coastal and peri-urban areas, particularly around Rennes and Vannes
• In the Pays de la Loire, through a renewed interest in secondary markets (Angers, La Roche-sur-Yon, Cholet), where prices remain affordable and vacancy rates low

For DIAGADOM, this localized recovery represents an opportunity for B2B players in the real estate sector to seize by promoting properties to be renovated before a resale, adapting the offer to local changes in demand or monitoring the F and G classified stock in areas with high rental pressure. It is also an opportunity for individuals, but knowing how to find G-classified properties and carry out the necessary renovation work.

For Seydi Eren: "These dynamic areas must now focus renovation, financing, and marketing efforts. They offer favorable terrain for high-potential operations, particularly in existing properties requiring renovations."

Study methodology

DIAGADOM carried out this study from July 1 to 15, 2025, by comparing, based on the number of DPEs published by all diagnosticians in France on the ADEME (Energy Transition Agency) website, the number of DPEs carried out in metropolitan France in the first quarter of 2025 compared to that of 2024. DIAGADOM also extracted the number of G labels published overall on ADEME in the first quarter of 2025 compared to that of the first quarter of 2024. The data was extracted from the ademe.fr website. Diagnosticians are required in France to publish the results of their diagnostics on ademe.fr.

Illustrative image of the article via Depositphotos.com.