Who is responsible for electric system repair for new house in France?

Reader question: I am buying a house and the diagnostic form says the electrics need a lot of work, whose responsibility is this? 

When a house in France is for sale, the seller must provide a dossier de diagnostic technique, including a diagnostic électrique for installations older than fifteen years. 

This report identifies any faults or safety issues such as missing protective devices, outdated wiring, or poorly connected circuits. 

It informs the buyer but does not legally require the seller to carry out repairs. Its purpose is to ensure transparency so the buyer knows the condition of the installation before committing to the purchase. 

Responsibility for correcting electrical faults generally falls to the buyer after the sale is completed. 

If the compromis de vente or sale contract does not specify that the seller must carry out certain repairs, the buyer must arrange and pay for any work themselves. 

This is referred to as buying the property en l’état (as it is).

Some buyers use the results to negotiate a lower price or make completion conditional on agreed repairs, but this is a matter of negotiation not legal obligation. The seller’s responsibility is limited to providing a valid diagnostic. 

Failing to deliver the report or providing false information exposes the seller to legal action. 

In this case, the buyer may claim compensation, request a price reduction, or even seek annulment of the sale.

Before signing, it is advisable for a buyer to discuss the findings with their notaire or an independent professional to understand the scale, urgency, and cost of required work.