Your father bought a stone house in the Dordogne fifteen years ago, lived there full time after Brexit on a Withdrawal Agreement residence permit, and now his memory is failing. The bank has started asking questions about large transfers, the roof needs urgent work, and you hold a registered English Lasting Power of Attorney in which he named you to manage his property and financial affairs. You send it to the French notaire, the public officer who alone can transfer French land, and the answer comes back: this document is not enough to sell, mortgage or even fully manage the house. Across France, British families discover the same gap at the worst moment. England gives you an attorney; France asks for a French title, a judge, and a procedure.

The gap is bridgeable, but only if you understand that two legal systems are looking at the same person through different lenses. Since Brexit, the Hague Convention of 13 January 2000 on the International Protection of Adults still governs which country’s rules validate your father’s English document and which country’s rules govern its day-to-day use in France, and the Court of Cassation has spelled out exactly how that split works. French domestic law then offers a ladder of protections, from the advance mandate your father can still sign while he has capacity, to family authorisation and court-ordered guardianship when he no longer does, each with precise effects on the house. This article explains why the English document stalls at the notaire’s door, which French measure fits each stage of decline, and how to challenge a refusal that blocks you.

I. Why Your English Power of Attorney Stalls at the French Notaire’s Door

A. What an English Lasting Power of Attorney Is, and Why France Reads It Through the Hague Convention

In England and Wales, a Lasting Power of Attorney, universally shortened to LPA, is presented in the official guidance as a legal document by which the donor appoints one or more attorneys to help make decisions or to make them on the donor’s behalf, with a dedicated form for property and financial affairs. The donor is the person giving the power; the attorney is the person receiving it, usually a child or spouse. The document must be registered with the Office of the Public Guardian before it can be used, which is why British families arrive in France with a stamped, registered instrument that feels conclusive. For English domestic purposes it is. The difficulty is that a French notaire, a bank holding a French account, or the land registry office does not apply English domestic law to a French house. It applies French private international law, and for the protection of adults that means the Hague Convention of 13 January 2000 on the International Protection of Adults, whose full text is published by the Hague Conference. Both France and the United Kingdom are parties, and Brexit did not remove either of them from it.

The Convention draws a sharp line that every British family should memorise. In its judgment of 27 January 2021, No 19-15.059, the First Civil Chamber of the Court of Cassation reproduced the decisive provisions word for word. Article 15 provides: “L’existence, l’étendue, la modification et l’extinction des pouvoirs de représentation conférés par un adulte, soit par un accord soit par un acte unilatéral, pour être exercés lorsque cet adulte sera hors d’état de pourvoir à ses intérêts, sont régies par la loi de l’Etat de la résidence habituelle de l’adulte au moment de l’accord ou de l’acte unilatéral”. In substance: whether your father’s English LPA validly exists, what it covers, and how it can be changed or ended is governed by the law of his habitual residence when he signed it. If he was living in France when he made the LPA, or if he expressly designated an applicable law in writing as the paragraph allows, that analysis decides validity. Then comes the second half of the split, Article 15 paragraph 3: “Les modalités d’exercice de ces pouvoirs de représentation sont régies par la loi de l’Etat où ils sont exercés.” How the attorney actually exercises the powers on French soil is governed by French law. A valid English LPA therefore enters France, but it must behave the French way once inside.

That French way includes a verification step that surprises British attorneys. The same 2021 judgment explains that putting a foreign mandate into effect in France may be subjected, as a matter of exercise modalities, to a court-registry visa procedure, a formal check by the greffe, the registry office of the judicial court, designed to verify that the loss of faculties has been medically certified and to fix the date the mandate takes effect. But the Court added a protection that runs in your favour: “elle ne saurait être subordonnée à des conditions propres au droit français, telles que l’exigence d’une prévision expresse, dans le mandat, de modalités de contrôle du mandataire que n’impose pas la loi applicable à cet acte.” (Cass. 1re civ., 27 Jan. 2021, No 19-15.059). A French registry cannot refuse the visa simply because the English LPA lacks a control mechanism that English law never required, such as the named supervisor a French advance mandate may designate. The visa checks the medical position and the date; it cannot rewrite the English document into a French one. If the greffe or the notaire rejects the LPA on purely French-form grounds, that paragraph is your answer, and a written refusal should be demanded so it can be challenged.

There remains a harder limit that no visa can cure. French land transfers demand an authentic instrument. Article 710-1 of the Civil Code reserves the land-registration formalities to acts received in authentic form by a notaire practising in France, court decisions or authentic acts from an administrative authority, and it expressly provides that filing a private signed act with a notaire cannot produce registration. An English LPA, even apostilled, translated by a sworn translator and visa-stamped, is a foreign private instrument, not a French authentic act. For day-to-day administration, paying the taxe fonciere, instructing an insurer, collecting rent if the house is let, a recognised attorney can usually act. For selling the house, granting a mortgage, or giving it away, the notaire needs a French title behind the signature: an advance mandate in notarial form, a family authorisation, or a guardianship order. Expect the English LPA to open the dialogue with the bank and the notaire, and expect a French measure to close the sale. Families who grasp this division early save months; those who insist the LPA alone must suffice lose them.

B. The French Protection Ladder the Judge Applies Instead: Necessity, Subsidiarity and Medical Proof

Before choosing any French measure, understand the principle that controls them all. French protection law is built on necessity and subsidiarity: the judge orders nothing the family can already handle, and nothing heavier than the situation requires. Article 425 of the Civil Code sets the doorway condition: “Toute personne dans l’impossibilité de pourvoir seule à ses intérêts en raison d’une altération, médicalement constatée, soit de ses facultés mentales, soit de ses facultés corporelles de nature à empêcher l’expression de sa volonté peut bénéficier d’une mesure de protection juridique prévue au présent chapitre.” Two elements must coincide: an inability to look after one’s own interests, and a medically certified alteration of mental faculties or of bodily faculties preventing the expression of wishes. Old age alone, eccentricity, or a family disagreement about money is not enough. The medical finding is the key that either opens the door or keeps it shut.

Article 428 of the Civil Code then states the subsidiarity rule: “La mesure de protection judiciaire ne peut être ordonnée par le juge qu’en cas de nécessité et lorsqu’il ne peut être suffisamment pourvu aux intérêts de la personne par la mise en œuvre du mandat de protection future conclu par l’intéressé, par l’application des règles du droit commun de la représentation, de celles relatives aux droits et devoirs respectifs des époux et des règles des régimes matrimoniaux, en particulier celles prévues aux articles 217 , 219 , 1426 et 1429 ou, par une autre mesure de protection moins contraignante. La mesure est proportionnée et individualisée en fonction du degré d’altération des facultés personnelles de l’intéressé.” Read that list as a hierarchy the judge must climb from the bottom. If your father’s advance mandate, the mandat de protection future examined below, already covers the house, the judge stops there. If ordinary agency, the spouses’ mutual representation rules, or a lighter measure suffices, the court must prefer it. Only proven necessity unlocks guardianship, and the measure must be proportionate and tailored to the actual degree of impairment. For British families this is strategic as well as principled: presenting a working lighter solution, a valid mandate, a cooperating spouse, a family authorisation, is not merely helpful, it is what the statute obliges the judge to prefer.

The medical proof itself follows strict formal rules, and the Court of Cassation enforces them without mercy. In its judgment of 2 March 2022, No 20-19.767, published in the Bulletin, the First Civil Chamber held: “Il résulte de la combinaison des autres que la demande est accompagnée, à peine d’irrecevabilité, d’un certificat circonstancié rédigé par un médecin choisi sur une liste établie par le procureur de la République.” Every application to a guardianship judge must be accompanied, on pain of inadmissibility, by a detailed certificate from a doctor on the public prosecutor’s list, not simply any GP letter. The same judgment quashed an appeal court that had reinforced curatorship on the basis of a certificate drawn up for a different purpose, holding that “alors que la requête tendant au renforcement de la mesure de protection, faute d’être accompagnée d’un certificat médical circonstancié établi à cette fin, n’était pas recevable, la cour d’appel a violé les textes susvisés.” A certificate prepared to activate an advance mandate cannot simply be recycled to obtain or reinforce a court measure; each request needs its own purpose-built certificate. The practical lesson is blunt: before filing anything, instruct a listed doctor, explain precisely which measure is sought, and obtain a certificate drafted for that request. Applications fail on this paperwork far more often than on the merits, and a second filing costs months your father’s situation may not have.

Within this framework the available measures ascend in weight. At the lightest end, the advance mandate operates without any judge at all. Next comes family authorisation, the habilitation familiale, which lets close relatives act under a judge’s one-off permission. Above that sit the court measures: sauvegarde de justice, a short protective umbrella; curatelle, assistance for important acts; and tutelle, full representation. The judge sets each measure for a fixed term and reviews it, and Article 442 of the Civil Code governs renewal. Your objective as a British family is normally to settle as low on this ladder as the situation honestly allows, because each rung upward costs time, medical evidence, court involvement and ongoing supervision, and because a house sale authorised at the lowest adequate rung is just as valid as one authorised at the top. The two sections that follow map the two realistic positions: your parent can still sign, or he no longer can.

II. How to Protect the French House Before and After Capacity Is Lost

A. While Your Parent Still Has Capacity: Sign a French Advance Mandate in the Correct Form

If your father still understands what he is signing, even on a good day between bad ones, act now, because the advance mandate, the mandat de protection future, is the only measure he can create himself, and it keeps the judge out of the picture entirely. Article 477 of the Civil Code provides: “Toute personne majeure ou mineure émancipée ne faisant pas l’objet d’une mesure de tutelle ou d’une habilitation familiale peut charger une ou plusieurs personnes, par un même mandat, de la représenter pour le cas où, pour l’une des causes prévues à l’article 425 , elle ne pourrait plus pourvoir seule à ses intérêts.” Any adult not already under guardianship or family authorisation can appoint one or more persons, in a single mandate, to represent him when he can no longer look after his own interests. For a British father in France this is the French companion to the English LPA: the LPA speaks to English institutions, the mandat speaks to the French notaire, the French bank and the land registry, and the two documents coexist, each governing its own territory. Article 478 adds that “Le mandat de protection future est soumis aux dispositions des articles 1984 à 2010 qui ne sont pas incompatibles avec celles de la présente section”, anchoring the mandate in the general law of agency except where the protection regime says otherwise.

Form is everything, and this is where British families must resist the English reflex of signing a simple witnessed document. The mandate can be made either as a private signed act or as a notarial act, but the two forms have radically different powers over a house. The official guidance confirms that a private-form mandate restricts management of the estate to routine administration only, and that for every act disposing of the estate, the classic example being the sale of a building, the attorney must obtain the agreement of the guardianship judge (see service-public.fr: mandat de protection future). Administration means collecting income, paying bills, renewing a residential lease, arranging repairs; disposition means selling, mortgaging, giving away or borrowing against the house. If the likely outcome is a sale, to fund care fees or because your father will return to England, the private form merely postpones the court application it was meant to avoid. The notarial form, an authentic act received by the notaire, carries full powers including disposition from the start, subject to the supervision the mandate itself organises. For any British parent who owns French land, the notarial form is the only rational choice, and the extra cost of the notaire’s involvement is trivial beside a blocked sale.

Activation follows a precise choreography that should be prepared in advance, not discovered in crisis. Article 481 of the Civil Code provides: “Le mandat prend effet lorsqu’il est établi que le mandant ne peut plus pourvoir seul à ses intérêts. Celui-ci en reçoit notification dans les conditions prévues par le code de procédure civile. A cette fin, le mandataire produit au greffe du tribunal judiciaire le mandat et un certificat médical émanant d’un médecin choisi sur la liste mentionnée à l’article 431 établissant que le mandant se trouve dans l’une des situations prévues à l’article 425 . Le greffier vise le mandat et date sa prise d’effet, puis le restitue au mandataire.” The attorney attends the court registry in person with the mandate, the father’s identity papers, his own, a listed doctor’s certificate, and proof of habitual residence; the registrar endorses the mandate, dates its taking effect and hands it back. Keep certified copies of everything, because the bank, the insurer and the notaire will each want to see the endorsed mandate with its visa, and the visa’s date determines from when every act of the attorney is covered. Note the trap already identified in the 2022 judgment: that activation certificate serves activation only, so if a court measure later becomes necessary, a fresh purpose-built certificate will be needed.

A signed mandate is the beginning of a supervised mission, not a blank cheque, and the Court of Cassation has shown what happens when the attorney neglects it. In its judgment of 17 April 2019, No 18-14.250, the First Civil Chamber approved a court that had ended an activated mandate and opened reinforced curatorship, because “les intérêts patrimoniaux de M. F… n’étaient pas suffisamment préservés par le mandat de protection future auquel il devait dès lors être mis fin au profit d’une curatelle renforcée”. The findings were concrete: a late and incomplete inventory of assets, wealth-tax returns omitted with a reassessment following, an unexplained property position, undocumented movements of substantial sums. Any interested person can bring such failures to the judge. The statute reinforces the warning: Article 488 of the Civil Code provides that “Les actes passés et les engagements contractés par une personne faisant l’objet d’un mandat de protection future mis à exécution, pendant la durée du mandat, peuvent être rescindés pour simple lésion ou réduits en cas d’excès”, meaning transactions struck during the mandate can be rescinded for mere undervalue or reduced if excessive. Choose an attorney who will actually administer: draw up the inventory promptly, file the tax returns, keep receipts for every movement of money, and render the annual account the mandate requires. For British families this usually means appointing the child who lives nearest or visits most, organising online access to the French accounts before capacity fades, and briefing a French-speaking professional to review the yearly accounts.

B. After Capacity Is Lost Without a Mandate: Family Authorisation, Court Measures and the Sale of the House

When no advance mandate exists and your mother or father can no longer manage, the fastest judicial route is usually family authorisation, the habilitation familiale, which keeps matters inside the family with a light judicial touch. Article 494-1 of the Civil Code provides: “Lorsqu’une personne est dans l’impossibilité de pourvoir seule à ses intérêts en raison d’une altération, médicalement constatée soit de ses facultés mentales, soit de ses facultés corporelles de nature à empêcher l’expression de sa volonté, le juge des tutelles peut habiliter une ou plusieurs personnes choisies parmi ses ascendants ou descendants, frères et sœurs”, with the spouse, civil partner or cohabitant added where the shared life continues. The guardianship judge, the juge des tutelles, is the judge designated for protected adults at each judicial court. The authorised person acts free of charge, must meet the conditions for guardianship office, and can be empowered to represent, to assist, or to conclude one or more specified acts. The official guidance details the application and the two variants, general or limited to specific acts (see service-public.fr: habilitation familiale). For a British family, the limited form tailored to the house, authorisation to sell at a floor price, to accept an offer, to sign before a named notaire, is often ideal: it solves exactly the blocked transaction without placing your parent under a full regime, and siblings can be authorised jointly where family harmony allows.

Where family authorisation cannot suffice, because there is no suitable relative, because the family is divided, or because the impairment demands continuous representation, the judge turns to the classic court measures, and the house follows the measure. Under sauvegarde de justice your parent keeps capacity but risky acts can later be challenged; under curatelle the curator assists for important acts and the protected person acts with that assistance; under tutelle the tutor represents fully. Selling the house under any of these regimes requires the judge’s prior authorisation on transcripts of the medical position and usually two valuations, and the sale then proceeds before the notaire in authentic form, registrable without difficulty. Remember the subsidiarity ladder from Article 428: if you arrive asking for tutelle when a limited family authorisation would have done, expect the judge to send you back down, with months lost. Frame every application at the lowest rung that genuinely secures the house, and explain in the petition why nothing lighter would work.

Brexit added a residence-permit dimension that must be managed alongside the protection file. A British parent settled in France before 31 December 2020 normally holds a Withdrawal Agreement card, and incapacity does not cancel that card, but renewals, travel and prolonged hospital stays need attention while the protection measure is being set up. Keep the residence permit, passport, medical certificates and proof of address in one file, because the court registry, the notaire and the prefecture will each ask for overlapping papers, and an attorney or authorised person who cannot prove the parent’s lawful residence will struggle to be taken seriously by any of them. Where your parent divides time between England and France, fix the habitual residence position in writing early, since it determines both the Convention analysis for the LPA and which court has jurisdiction over the protection measure. Families who present one coherent file, residence proved, medical position certified by a listed doctor, English LPA exhibited with its registration, move through every office faster.

Refusals are part of the landscape, and each has a remedy. If the court registry refuses the visa on an English LPA, demand the refusal in writing and answer with the 2021 judgment: validity follows the residence law, exercise follows French law, and purely French-form conditions cannot be imposed. If the notaire declines to act on your mandate or authorisation, ask for the precise defect alleged, cure it where possible, and where the notaire persists, a second opinion from another notaire plus a reasoned letter from a lawyer usually unlocks the file, since liability concerns rather than legal bars drive most refusals. If the guardianship judge rejects the application, the order can be appealed to the court of appeal within the statutory time limit, and a fresh application with a compliant certificate remains possible, as the 2022 judgment’s inadmissibility ruling shows that defective filings fail on form, not on the underlying need. If a sale already concluded at undervalue is attacked, Article 488’s rescission for mere lesion is the shield the statute provides the protected person. And where the succession itself is approaching, the companion questions of English wills choosing English law for the French house and of unblocking a Franco-British estate are covered in the guides to British wills and French forced heirship and to probate and the notaire after a British parent’s death. No refusal in this chain is final until a court has had the last word.

Conclusion

The English Lasting Power of Attorney is the right starting point but the wrong finishing line for a French house. Its validity is judged under the law of your parent’s habitual residence when it was signed, its exercise in France obeys French law, and the Court of Cassation forbids registries from grafting purely French conditions onto it, yet no foreign private instrument can replace the French authentic title the land registry demands. While your parent still understands, a notarial mandat de protection future bridges the gap completely: full powers over the house, activated at the court registry on a listed doctor’s certificate, performed under accounting duties the courts genuinely enforce. Once capacity is gone, family authorisation tailored to the transaction is the lightest judicial key, with curatorship and tutorship behind it for heavier cases, every application carried by its own purpose-built medical certificate. Build the file in that order, keep residence, medicine and mandate together, and the Dordogne house your father chose becomes a managed asset instead of a frozen one.