THE ASSURANCE DECENNALE:
This insurance is separate from the mandatory third party risk insurance. It is required on all new builds and structural alterations (including repairs and renovation) to cover future risks with the structure. It offers a full 10 year warranty backed by major french insurers against structural failure. Without this cover you will find it difficult to sell your property within the 10 years of the work being done as the Notaire (solicitor) will ask for copies of the insurance certificate. In France it is against the law to make any structural changes yourself and you must employ an Artisan to effect these changes, who carries the 'Assurance Decennale'. Not all builders have this insurance as it can be quite expensive and / or the Insurance Company may have declined cover, for whatever reason, you must ask for a copy of the certificate, which is renewed annually - look at the date to ensure it is still in force, before signing any contract.