Real estate diagnosis: state of the indoor electricity installation
Verified 17 September 2026 - Public Service / (Prime Minister)
In which case must a condition of the indoor electricity installation, also called diagnostics electricity ? The condition of the indoor electricity installation is a diagnosis that assesses the risks that may endanger the safety of people and their property. It must be provided by the landlord or the salesman and be given to the future tenant or purchaser when the electrical installation is more than 15 years old. Here is the information you need to know.
Rental
The owner who rents a apartment or a detached house of which the installation of electricity has more than 15 years must provide an electricity diagnosis to the future tenant.
Diagnosis should be made by a diagnoser responding to certain criteria, including certification.
It is possible to use a directory to search for a certified diagnoser:
Search for a certified real estate diagnoser or check the certificates of its diagnoser
Electricity diagnosis is carried out in the private parts of the dwelling and its outbuildingsdownstream of the general apparatus for controlling and protecting the electrical installation specific to each housing, as far as the power supply terminals or as far as the sockets of the sockets.
Electricity diagnostics also include the suitability of fixed equipment for network characteristics and the conditions of their installation with regard to safety requirements.
Electricity diagnostics shall identify the existence and describe, in the light of safety requirements, the characteristics of:
- A general control and protection apparatus and its accessibility
- At least one differential device of appropriate sensitivity to the grounding conditions, at the origin of the electrical installation
- An overcurrent protection device adapted to the section of the conductors, on each circuit
- An equipotential connection and an electrical installation adapted to the particular conditions of the premises containing a bath or shower.
Electricity diagnostics identify electrical equipment that is unsuitable for use (or presents a risk of direct contact with live elements) and conductors that are not mechanically protected.
The electrical diagnosis must be carried out in accordance with a regulated methodology and model.
Electricity diagnostics must be integrated into the technical diagnostic record (DDT).
It must be given to the future tenant at the time of signing the lease.
Electricity diagnosis must have been carried out since under 6 years old on the date of signature of the lease.
However, a certificate of conformity of the national committee for the safety of electricity users (Consul), usually delivered by the installer, can replace the electrical diagnosis if the certificate has been made for less than 6 years.
The penalties vary depending on the people involved.
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Lessor
The landlord may be held liable if he does not transmit the electricity diagnosis or if he provides inaccurate information in the rental announcement, misleading the future tenant.
The lessor may also be fined €1,500 if using an uncertified diagnoser (€3,000 in case of recurrence).
Diagnostic
If the diagnoser makes a mistake by not complying with the regulations to carry out the electrical diagnosis (for example, erroneous diagnosis), the tenant can appeal to the judicial court of the location of the property to request damages and interest.
In addition, the diagnoser may be fined €1,500 if practicing without certification (€3,000 in case of recurrence).
Sale
The owner who puts a apartment or a detached house of which the installation of electricity has more than 15 years must provide an electricity diagnosis to the future purchaser.
Diagnosis should be made by a diagnoser responding to certain criteria, including certification.
It is possible to use a directory to search for a certified diagnoser:
Search for a certified real estate diagnoser or check the certificates of its diagnoser
Electricity diagnosis is carried out in the private parts of the dwelling and its outbuildingsdownstream of the general apparatus for controlling and protecting the electrical installation specific to each housing, as far as the power supply terminals or as far as the sockets of the sockets.
Electricity diagnostics also include the suitability of fixed equipment for network characteristics and the conditions of their installation with regard to safety requirements.
Electricity diagnostics shall identify the existence and describe, in the light of safety requirements, the characteristics of:
- A general control and protection apparatus and its accessibility
- At least one differential device of appropriate sensitivity to the grounding conditions, at the origin of the electrical installation
- An overcurrent protection device adapted to the section of the conductors, on each circuit
- An equipotential connection and an electrical installation adapted to the particular conditions of the premises containing a bath or shower.
Electricity diagnostics identify electrical equipment that is unsuitable for use (or that presents a risk of direct contact with live elements) and conductors that are not mechanically protected.
The electrical diagnosis must be carried out in accordance with a regulated methodology and model.
Electricity diagnostics must be integrated into the technical diagnostic record (DDT).
It must be given to the future purchaser at the time of signature of the promise to sell or the authentic deed of sale.
Electricity diagnosis must have been performed for less than 3 years on the date of promise to sell or the authentic deed of sale.
The penalties vary depending on the people involved.
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Seller
The seller may incur liability if he does not transmit the electrical diagnosis. In this case, it cannot be exempted from the guarantee of hidden defects (non-visible defects).
The seller may also be fined €1,500 if using an uncertified diagnoser (€3,000 in case of recurrence).
Diagnostic
If the diagnoser commits a fault by not complying with the regulations to carry out the electrical diagnosis (for example, erroneous diagnosis), the purchaser can appeal to the judicial court of the location of the property to request damages and interest.
In addition, the diagnoser may be fined €1,500 if practicing without certification (€3,000 in case of recurrence).
Who can help me?
Find who can answer your questions in your region
For more information on this subject, you can contact Allô Service Public.
Please note: the service does not have access to users' personal files and cannot therefore provide information on their progress.
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The informants who answer you belong to the ministry in charge of housing and urban planning.
- Departmental Agency for Housing Information (Adil)
Realization in case of rental
Realization in case of sale
Characteristics of Electricity Diagnosis
Period of validity in case of sale
FAQ
Service Public
Service Public
National Institute of Consumer Affairs (INC)
(Dila) - Prime Minister
National Committee for the Safety of Electricity Users (Consul)