Is my home an energy sieve?

A home is an "energy sieve" if its DPE is rated F or G (consumption > 330 kWh/m²/yr). Check your DPE on Mansard's tool or on observatoire-dpe-audit.ademe.fr.

When is a G-rated home banned from rental?

Since January 1, 2025, G-rated homes cannot be rented under new leases. Existing leases continue but rent cannot be increased.

What happens in 2028?

From January 1, 2028, F-rated homes will also be banned from rental. In 2034, E-rated homes will follow.

What aid is available in Boulogne-Billancourt?

MaPrimeRénov' (up to €20,000 based on income), Eco-PTZ (up to €50,000 interest-free), CEE certificates and 5.5% VAT. Île-de-France often has additional regional aid.

Mansard.

— Climate & Resilience Law · ADEME Open Data

Energy sieves in Boulogne-Billancourt : 15% du parc

In Boulogne-Billancourt, an estimated 6,174 homes are rated F or G — about 15.1% of the housing stock. These homes are already or soon will be banned from being rented under the Climate & Resilience Law.

F + G homes

6,174

15.1% of housing stock

Banned in 2028

6,174

Rental homes

Average G discount

-15 à -22%

On resale (tight market)

DPE distribution in Boulogne-Billancourt

Based on 40,939 DPE records.

292.0%

1113.0%

10580.0%

12181.0%

10599.0%

4019.0%

2155.0%

Boulogne-Billancourt vs national average

Boulogne-Billancourt : 15.1% F+G·France average : 16.2% F+G

Ban timeline in Boulogne-Billancourt

Estimated number of homes impacted by the Climate Law.

2025

G-rated rental ban

2,155

homes impacted (5.3%)

2028

F-rated ban

6,174

homes impacted (15.1%)

2034

E-rated ban

16,773

homes impacted (41.0%)

Check your home's DPE rating

Free tool, no signup. MaPrimeRénov' grants estimate included.

Check your home's DPE rating

How much does an energy renovation cost?

Going from F to E typically costs €250-450/m² (roof insulation + heating). Going from G to D requires €600-900/m² (full insulation + heat pump).

Calculate my MaPrimeRénov' grants

Other cities in Île-de-France

Paris Saint-Denis Montreuil Argenteuil Nanterre Vitry-sur-Seine

FAQ

Estimated 6,174 F/G homes in Boulogne-Billancourt — about 15.1% of the housing stock.

Data from ADEME open data (DPE Observatory) with national-average estimates when local data is unavailable. Mansard is not affiliated with ADEME or Anah.

Mansard.

— Climate & Resilience Law · ADEME Open Data

Energy sieves in Boulogne-Billancourt : 15% du parc

F + G homes

6,174

15.1% of housing stock

Banned in 2028

6,174

Rental homes

Average G discount

-15 à -22%

On resale (tight market)

DPE distribution in Boulogne-Billancourt

Based on 40,939 DPE records.

292.0%

1113.0%

10580.0%

12181.0%

10599.0%

4019.0%

2155.0%

Boulogne-Billancourt vs national average

Boulogne-Billancourt : 15.1% F+G·France average : 16.2% F+G

Ban timeline in Boulogne-Billancourt

Estimated number of homes impacted by the Climate Law.

2025

G-rated rental ban

2,155

homes impacted (5.3%)

2028

F-rated ban

6,174

homes impacted (15.1%)

2034

E-rated ban

16,773

homes impacted (41.0%)

Check your home's DPE rating

Free tool, no signup. MaPrimeRénov' grants estimate included.

Check your home's DPE rating

How much does an energy renovation cost?

Going from F to E typically costs €250-450/m² (roof insulation + heating). Going from G to D requires €600-900/m² (full insulation + heat pump).

Calculate my MaPrimeRénov' grants

Other cities in Île-de-France

Paris Saint-Denis Montreuil Argenteuil Nanterre Vitry-sur-Seine

FAQ

Estimated 6,174 F/G homes in Boulogne-Billancourt — about 15.1% of the housing stock.

Data from ADEME open data (DPE Observatory) with national-average estimates when local data is unavailable. Mansard is not affiliated with ADEME or Anah.