This article is general information for owners of French property and is not legal advice. It comments on a single Conseil constitutionnel decision (22 May 2026, no. 2026-1200 QPC) and the expropriation procedure it concerns, which is technical and fact-sensitive. If a commune has served you any notice about your property, take advice from a French avocat at once – several of the deadlines below are short and unforgiving.
Last Updated: June 2026
Here is a quiet risk that almost no English-speaking owner of French property has on their radar. If a building you own sits empty and visibly falls into disrepair, the local commune can start a procedure to expropriate it – to take it off you, compensation in hand but against your will – on a fast track that skips much of the usual machinery of French compulsory purchase. The procedure is not new; it has existed since 1989. What is new is that, on 22 May 2026, the Conseil constitutionnel (France’s constitutional court) examined it head-on, at the request of an owner whose property had been taken this way, and ruled that it is entirely constitutional. Let’s unpack what the procedure is, what the court said, and – the part that matters if you own a place you rarely visit – exactly when it can and cannot reach you.
The “Abandon Manifeste” Procedure, in Plain English
The mechanism is the expropriation sur déclaration d’état d’abandon manifeste – roughly, “expropriation on a declaration of manifest abandonment” – set out in articles L. 2243-1 to L. 2243-4 of the Code général des collectivités territoriales (the local-government code). It lets a commune take possession of, and ultimately expropriate, a building or plot in order to build or renovate housing, or for a collective-interest project of restoration, renovation or development.
The trigger has two limbs that must both be met, and this is the single most important thing to understand. The property must be (1) without a habitual occupant (sans occupant à titre habituel) and (2) manifestly no longer maintained (manifestement plus entretenu), with real disorder to it. An empty home is not enough; a scruffy but lived-in home is not enough. It is the combination – vacant and visibly derelict – that opens the door. There is also a geographic limit: the procedure can only be used inside the commune’s built-up area (the périmètre d’agglomération), not on isolated rural land.
The Case: A Derelict Plot and a Museum Extension
The dispute came from Boulogne-sur-Mer. The town council resolved on 29 June 2021 to declare a parcel in a state of manifest abandonment, and the préfet of the Pas-de-Calais followed up on 21 October 2021 with an order declaring the acquisition to be in the public interest and immediately transferable to the commune. The stated purpose was concrete and rather telling: the town wanted the land to extend a museum.
The expropriated owner fought it. He lost before the administrative court, and on appeal he changed tack, raising a question prioritaire de constitutionnalité (QPC) – a challenge to the constitutionality of the very articles L. 2243-1 to L. 2243-4 underpinning the procedure. The Conseil d’État thought the question serious enough to refer it up (27 February 2026), and so it landed before the Conseil constitutionnel. His complaint, in essence: the criteria are too vague and leave everything to the mayor; there is no proper mechanism giving an owner time to do the works; and the safeguards are too thin, not least because the town can take possession before the owner is fully paid and before any judge of the ordinary courts is involved.
What the Conseil Constitutionnel Decided
The court rejected every limb of the challenge and declared the contested provisions conforme à la Constitution. Its reasoning is worth following, because it doubles as a map of your protections.
It started from Article 17 of the Déclaration des droits de l’homme et du citoyen of 1789 (France’s revolutionary declaration of human rights), which makes property “inviolable and sacred” and allows expropriation only for a legally established public necessity and on condition of a juste et préalable indemnité – a just and prior indemnity. Taking possession, the court repeated, must normally be subordinate to prior payment, and a “just” indemnity must cover the entire direct, material and certain loss. But – and this is the hinge of the decision – paying a provisional sum up front, rather than the full final figure, is not unconstitutional if it serves an overriding public interest and is wrapped in adequate guarantees for the owner.
On the criteria, the court held that “without a habitual occupant” and “manifestly no longer maintained” are precisely defined by the legislator; the mayor does not get to invent the test, but applies it under the control of the courts. On the owner’s chance to act, it pointed to the three-month window (more on the steps below), during which the owner can stop the procedure dead simply by ending the abandonment or committing, by agreement with the mayor, to carry out the works. And on the early taking of possession, it found the overriding interest in the aim – removing buildings whose disorder threatens public safety, health and tranquillity – and the guarantees sufficient: a provisional indemnity no lower than the State valuer’s figure, the final amount set by the juge de l’expropriation, and full review by the administrative court, including urgent référé proceedings.
How the Procedure Runs, Step by Step
| Stage | What happens | Your window |
|---|---|---|
| 1. Procès-verbal provisoire | The mayor records the apparent abandonment, naming the specific disorders to fix. It is posted at the mairie and on the property for three months, run in two local newspapers, and notified to you (notification must reproduce the full text of the articles, on pain of nullity). | This is your warning shot – read it the day it arrives. |
| 2. Three-month interruption window | For three months you can stop the whole thing: either end the abandonment, or sign an agreement (convention) with the mayor committing to do the works within a set time. | The decisive moment. Act here and the procedure cannot continue. |
| 3. Procès-verbal définitif + council vote | If you have not acted, the mayor records the abandonment definitively and the town council votes on whether to declare the plot abandoned and pursue expropriation. | Challengeable before the administrative court (including référé). |
| 4. Acquisition dossier, public for one month | The mayor draws up a simplified acquisition project with a rough costing, made available to the public for at least a month for comments. (There is no full public inquiry – that is the “fast-track” part.) | Submit observations. |
| 5. Préfet’s order (DUP) | The préfet declares the public interest, lists the plots as transferable, names the beneficiary, and fixes a provisional indemnity (no lower than the State valuer’s figure) and a possession date at least two months later. | The order is challengeable before the administrative court. |
| 6. Possession + final indemnity | Possession follows payment (or deposit) of the provisional sum. Within a month the authority must continue the ordinary expropriation process, and the juge de l’expropriation sets the final compensation if there is no amicable deal. | The judge fixes what you are actually owed. |
The Safeguards That Saved the Procedure
It would be easy to read all this as a municipal land-grab, and the headline – “the town can take your house” – invites that. The decision is more balanced, and the safeguards it relied on are exactly the things an owner should lean on. You cannot be caught by surprise: the provisional procès-verbal has to be posted and personally notified, and it has to spell out the precise defects. You get a real second chance: the three-month window lets you halt the procedure outright by fixing the problem or formally committing to. You get paid: a provisional indemnity that cannot undercut the official valuation, then a final figure set by a specialist judge. And you can litigate at every turn, urgently if needed, both the council’s decision and the préfet’s order. The court’s conclusion was not that owners have no rights here, but that these guarantees, taken together, are enough.
What This Means for an Absentee Foreign Owner
This is where it gets practical, because the profile most exposed to this procedure is a familiar one on this blog: the owner who lives abroad and visits a French property rarely, or who has inherited a house and let it drift. The reassuring half of the message is that an empty home, on its own, is not a target – if your place is shuttered for ten months of the year but sound and maintained, the second limb of the test is simply not met. The uncomfortable half is that vacancy plus visible neglect, in a town, is exactly the fact pattern the procedure was built for, and the Boulogne case shows communes do reach for it when they want the land. Distance is the real enemy: a notice posted on a door and mailed to an address you no longer check is still a valid notice, and missing the three-month window is how owners lose the one moment that could have saved them.
The defence is unglamorous but complete: keep the property maintained and keep your contact details current with the mairie, treat any French administrative letter as urgent, and if a procès-verbal provisoire ever lands, get advice and act inside the three months. It helps to have systems for exactly this if you are managing from afar, which is the whole subject of our guide to managing French property remotely as a non-resident. It is also worth seeing this ruling in context: France is steadily tightening the screws on empty and under-used property, from the doubling of the tax on vacant homes to this confirmation that the most neglected ones can simply be taken. And if you want the other recent decisions on losing French property against your will, the 2026 ruling on disproportionate property seizure and the appeal on compensation for lost rent after expropriation sit squarely alongside this one.
The Bottom Line
The 22 May 2026 decision does not create a new power; it confirms an old one and removes any lingering doubt about its constitutional footing. A French commune can expropriate a property that is both empty and manifestly derelict, on a fast track that pays a provisional sum and takes possession before the final compensation is fixed – and the Conseil constitutionnel has now blessed that, because the public interest in clearing dangerous, unhealthy eyesores is real and the owner’s safeguards are genuine. For a foreign owner the takeaway is simple and slightly bracing: a French property is not a thing you can safely forget. Keep it maintained, keep your address current, open the letters, and the procedure will never reach you. Ignore it for years and let it fall apart, and one day the town hall may decide it can do something better with the site than you have.
FAQ
Can a French commune really take my property if I leave it empty?
Only if it is both without a habitual occupant and manifestly no longer maintained, and only inside the town’s built-up area. An empty but well-kept second home does not meet the test – it is vacancy combined with visible dereliction that triggers the “abandon manifeste” procedure under articles L. 2243-1 to L. 2243-4 of the local-government code. The Conseil constitutionnel confirmed the procedure is constitutional on 22 May 2026.
Will I be compensated if my property is expropriated this way?
Yes. The préfet fixes a provisional indemnity that cannot be lower than the State valuer’s (Domaines) figure, paid or deposited before the town takes possession. The final compensation is then set by the specialist expropriation judge if there is no amicable agreement, and must cover the entire direct, material and certain loss.
How much warning do I get, and can I stop it?
You get a provisional procès-verbal that is posted on the property and at the mairie, advertised in two local papers, and personally notified to you, listing the defects to fix. You then have three months in which you can stop the procedure entirely by ending the abandonment or formally committing, by agreement with the mayor, to carry out the works. Acting within that window is the single most important thing you can do.
How is this different from the ordinary expropriation procedure?
It is a simplified, faster track: there is no full public inquiry (just a one-month public consultation on the acquisition dossier), and the town can take possession after paying only a provisional indemnity, before the final amount is fixed. The Conseil constitutionnel allowed this because the aim – removing buildings whose disorder threatens public safety, health and tranquillity – is an overriding public interest, and the owner keeps real guarantees.
Can I challenge the decision in court?
Yes. You can challenge both the town council’s decision to declare the plot abandoned and pursue expropriation, and the préfet’s public-interest order, before the administrative court, including in urgent référé proceedings. Irregularities in the provisional or definitive procès-verbal can also be raised. The final compensation is a matter for the expropriation judge.
I am a non-resident. Does the procedure work differently for me?
The rules are the same wherever you live, but distance raises the risk: a notice validly posted and mailed still counts even if you do not see it in time, and the law allows notification at the mairie where an owner cannot be reached. The practical defences are to keep the property maintained, keep your address current with the mairie, and treat any French administrative letter as urgent.
