Real estate diagnosis: state of interior gas installation
Verified 08 October 2024 - Directorate for Legal and Administrative Information (Prime Minister)
In which case a state of the internal gas installation, also called gas diagnosis ? The condition of the indoor gas installation is a diagnostic which assesses the risks that may endanger the safety of persons. It must be provided by the owner-seller or lessor and be given to the purchaser or lessee when the gas installation is more than 15 years old. Here's the information you need to know.
Warning
If your gas installation has already been modified or completed and certificate of conformityHowever, you do not need a gas diagnosis. To be valid, your certificate of compliance must have under 3 years on the date of promise of sale or the authentic instrument of sale. The certificate of conformity must come from 1 of the 3 organizations currently approved by the Minister in charge of housing: Qualigaz, Dekra, Copraudit.
As the owner/vendor or landlord of an apartment or detached house, you must provide the prospective purchaser or tenant with a gas diagnosis if the facility has over 15 years.
FYI
Gas installations included in the dependencies single-family homes are also concerned.
The gas diagnosis must be carried out by a diagnoser meeting certain criteria, in particular certification.
This person must have purchased a assurance to cover the consequences of liability arising from its operations. It must not see any link that could affect its impartiality and independence vis-à-vis you or your agent who calls on it, or with a company that can carry out work on the works, installations or equipment.
You can use a directory to find a certified diagnoser:
Gas diagnosis is done in private parts of the accommodation and the outbuildings.
It shall describe the following information:
- Condition of fixed gas-fired heating and hot-water appliances or of fixed gas-fired heating and hot-water appliances
- Condition of fixed gas supply pipes and accessories therefor
- Provision of rooms in which gas appliances operate, allowing ventilation of these rooms and evacuation of combustion products.
The gas diagnosis must be carried out in accordance with regulated model and method.
Please note
The gas diagnosis is carried out without dismantling elements of the installations.
You need to integrate gas diagnostics with the various real estate diagnostics included in the Technical Diagnostic Record (DDT) in case of sale or in case of rental.
DDT should be delivered:
- At future purchaser at the time of signature of the promise of sale or the authentic instrument of sale
- Or at prospective tenant at the time of signing the lease.
The period of validity is different in the case of sale or rental.
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Sale
The gas diagnosis must have been established since under 3 years on the date of promise of sale or the authentic instrument of sale.
Rental
The gas diagnosis must have been established since under 6 years on the date of signature of the lease.
Please note
If a gas diagnosis has already been carried out for the purposes of the sale of the dwelling, it can be annexed to the lease in case of rental if it has been carried out for less than 6 years.
Sanctions vary depending on who is involved.
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Owner Seller
Your liability may be incurred if you do not transmit the gas diagnosis or if you mention false information in the sale announcement to mislead the future buyer.
If you do not provide the diagnosis, you cannot be exempt from the guarantee of hidden defects.
You may also be fined €1,500 if you are using an uncertified (€3,000 in case of recurrence).
Landlord
Your liability may be incurred if you do not voluntarily transmit the gas diagnosis to the tenant or if you mention false information in the rental advertisement to mislead him.
In addition, you can also be fined €1,500 if you are using an uncertified (€3,000 in case of recurrence).
Diagnoser
If the diagnoser makes a mistake by not complying with the regulations to carry out the gas diagnosis (for example, incorrect diagnosis), the buyer or the tenant can make a complaint to the court of law of the place where the property is situated to request damages.
In addition, the diagnosers may be fined €1,500 if he exercises without certification (€3,000 in case of recurrence).
Notary
The liability of the notary may be incurred if he has validated the sale in the absence of the gas diagnosis or in the knowledge of misleading information misleading the buyer.
Who can help me?
Find who can answer your questions in your region
Telephone administrative information - Allo Public Service
For more information on this topic, you can contact Allô Service Public.
Attention: the service does not have access to users' personal files and cannot therefore provide information on their status.
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The informants who answer you belong to the ministry in charge of housing and city planning.
- Departmental Agency for Housing Information (Adil)
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