Meublés de tourisme require registration and, in the tightened zones, a change-of-use authorisation with compensation. The city has been aggressive about enforcement — assume the licence is the asset, not the flat.
Sea view, floor level and lift presence move price more than square metres do. Coastal exposure also means salt-air maintenance and rising insurance on older seafront copropriétés.
The airport is the second busiest in France, which is why the second-home book here is genuinely international rather than Parisian weekend traffic.