The DPE is mainly used to assess the quantity of energy and greenhouse gases in a home.

The DPE must be carried out at the initiative of the owner of the accommodation who is selling their accommodation (the seller).

The seller must have this diagnosis carried out by a certified professional.

The seller must include the DPE in the technical diagnostic file (DDT) and give it to the future purchaser .

The seller may be held liable if he does not voluntarily transmit the DPE to the future buyer. Similarly, the notary is liable if he validated the sale in the absence of the DPE or with knowledge of false information misleading the future buyer. The buyer may appeal to the court and get some damages : Amount of money intended to compensate for the harm suffered or even the cancellation of the sale.

What should the DPE contain?

The DPE must contain at least the following information:

• Relevant characteristics of the dwelling (or part of it) and description of its heating equipment, domestic hot water production, cooling, ventilation and, in certain types of buildings, integrated lighting of the premises. Each category of equipment must indicate the conditions of use and management having an impact on energy consumption.
• Indication of the annual quantity of energy consumed or estimated for each category of equipment according to a conventional calculation method and evaluation of these annual consumption expenses
• Assessment of the quantity of greenhouse gas (GHG) emissions linked to the annual quantity of energy consumed or estimated
• Information on renewable energy produced by equipment permanently installed and used in the home (or part of it)
• Classification of the accommodation (or part of it) using a reference scale (label) Energy ) taking into account the climatic zone and altitude, carried out according to the annual quantity of energy consumed or estimated in relation to the surface area of ​​the dwelling (or part of it) for heating, cooling, production of domestic hot water, lighting and auxiliary heating, cooling, domestic hot water and ventilation
• Classification of the accommodation (or part of it) using a reference scale (label) Climate ) taking into account the climatic zone and altitude, carried out according to the quantity of greenhouse gas emissions reported to the surface area of ​​the dwelling (or part of it) for heating, cooling, production of domestic hot water, lighting and auxiliary heating, cooling, domestic hot water and ventilation
• Recommendations to improve the energy performance (e.g. window insulation) of the dwelling, together with an assessment of their cost and effectiveness. These recommendations must not have the effect of increasing the amount of greenhouse gas emissions linked to the annual amount of energy consumed or estimated by the dwelling
• Latest periodic boiler inspection report or annual maintenance certificate
• Elements of assessment on the capacity of the accommodation (or part of it) to ensure thermal comfort in summer

The DPE must state that the diagnostician has the skills required to carry out the diagnosis.

How long is the DPE valid for?

The period of validity of the DPE is 10 years .

However, the DPEs carried out between the ^1st January 2013 and December 31, 2017 were valid until December 31, 2022.

Those made between the ^1st January 2018 and June 30, 2021 are valid until December 31, 2024.