FAQ
A standard removable aluminium barrier costs between 250 and 450 EUR per linear metre installed, while automatic systems for doors or garages range from 1800 to 3500 EUR per unit depending on size and motorisation.
Fixed or structural barriers may require a declaration to the mairie, especially in PPRI-regulated zones along the coast, whereas removable panels generally do not need prior authorisation.
Given the recurring autumn flooding risk from the Paillon and coastal surges, insurers often favour properties with certified barriers, which can also reduce premiums over time.