Understanding the OLD: The Fifty-Metre Covenant

France’s Obligation Légale de Débroussaillement, the legal duty to clear brush, is one of the least visible, yet most consequential, rules shaping Riviera ownership today. On the Côte d’Azur, where pines, maquis and garrigue meet homes built into the landscape, the question is no longer whether the rule matters, but how seriously it should be taken.

There is a geometry to every great property on the Côte d’Azur that appears on no title deed. Stand on a terrace above Valbonne in late June, when the resin of the pines thickens the air and the cicadas begin their long argument with the heat, and you can almost trace it: an invisible perimeter radiating outward from the walls of the house. French law calls it the obligation légale de débroussaillement, or OLD, and for owners in exposed areas it has become one of the most important duties attached to the land.

An old idea with new teeth The principle is not new. It was built progressively into the French Forest Code over decades, refined text by text, as the South learned, sometimes brutally, what summer asks of those who live among the pines.

Then came the fires. The 2023 reform strengthening forest-fire prevention did not create the OLD; it sharpened it, reinforcing information, prevention and sanctions. Since 1 January 2025, the obligation has also entered the transaction itself: for properties in the zones concerned, it must be mentioned in the property advertisement, and the risk information file now includes dedicated OLD information for buyers and tenants. What was once a conversation for gardeners has become a conversation for notaries.

What the law actually asks The OLD concerns properties situated in, or within 200 metres of, woodland, maquis or garrigue exposed to fire risk. Around each building, the owner must generally maintain a 50‑metre perimeter, with local prescriptions capable of extending that distance to 100 metres, and official guidance also points to clearing requirements along private access lanes serving the house.

In urban planning zones, the logic can invert: the entire parcel may have to be maintained, whether built upon or not. In the Alpes-Maritimes, the applicable local texts remain the decisive reference, and the mairie or prefectural guidance should be checked for the commune concerned.

And clearing does not mean razing. The word débroussaillement is precise: reduce combustible undergrowth, remove dead wood, cut back the ground‑level tangle firefighters call “the ladder”, and break the continuity of vegetation so fire cannot travel easily from one crown to the next. Done properly, a maintained terrain débroussaillé still looks like Provence. It simply no longer behaves like kindling.

The practical rhythm matters too. The official buyer‑and‑tenant information sheet explains that the major vegetation‑reduction works are recommended in autumn and winter, while spring is the season for maintenance and clearing away residues.

The subtlety that surprises everyone One point catches even seasoned owners: the perimeter does not necessarily stop at the boundary line. The official information sheet states that débroussaillement must be carried out continuously, without regard to property limits, and may therefore extend onto a neighbouring parcel.

If that happens, the owner must follow the notification and access procedure required by the applicable texts, generally at the owner’s expense. The same official sheet sets out that, where a neighbour refuses access or does not reply within one month, responsibility for that portion shifts to the neighbour and the mayor must be informed.

On the intimate hillsides of Èze or Saint‑Paul‑de‑Vence, where parcels interlock like the pieces of an old marquetry, this makes the OLD a quietly communal act: a covenant between neighbours who may never have exchanged more than a nod, each keeping a portion of the other’s safety.

The cost of looking away The arithmetic of neglect has become difficult to ignore. The January 2025 ministerial information sheet warns of criminal sanctions ranging from a 5th‑class fine up to 1,500 euros to offences punished at 50 euros per square metre not cleared, as well as administrative measures including formal notice, penalty payments, administrative fines of up to 50 euros per square metre, and works carried out by the commune at the owner’s expense.

It also warns of an insurance deductible applying where the parcel was not properly prepared. And it states the point with unusual force: 90 per cent of houses destroyed in forest fires stood on land that was uncleared or poorly cleared.

A cleared house is a house that can be defended, and very often a house that, for the crucial first hour, defends itself.

A disclosure of character For the discerning buyer, the OLD is best read not as a burden but as a revelation. When we walk a property with clients, the fifty metres tell us as much as the roofline or the pool house: pines lifted and spaced, approaches open, the land beneath the trees kept with the same care as the terrace above.

It speaks of custodians who understood that they owned not merely a villa, but a position in a landscape, and that the landscape, in August, sets its own terms. On this coast, luxury has always been a form of maintenance: of stone, of gardens, of silence. The fifty‑metre covenant simply extends that discipline outward, to the trees themselves.

This column offers general information only and does not constitute legal advice. For any given property, the applicable national, prefectoral and municipal texts in force on the relevant date remain the sole reference.

Azure & Stone Editorial — August 2026