When the service charges on your French flat go unpaid, the building does not simply send reminders. French co-ownership law hands the building’s representative a fast-track procedure that can make a full year’s charges fall due at once, secures the debt with a legal mortgage over your flat, and can intercept the sale price if you sell. Two rulings of the Cour de cassation in January and June 2026 have just redrawn the limits of that weapon, and foreign owners are among the first concerned: second-home owners who visit twice a year, landlords paid in another currency, and buyers acquiring through a company are the profiles most likely to discover a formal demand in the mailbox months after it was sent.
The scale of the problem explains why courts see so many of these cases. In June 2025, the national body of the commissaires de justice (court enforcement officers, formerly known as huissiers) estimated that some 720,000 French co-owned buildings faced difficulties linked to unpaid charges, out of roughly 880,000 copropriétés (residential co-ownerships), and put total arrears at around 2 billion euros. A 2024 Senate estimate was more conservative but still alarming: about 215,000 co-ownerships were owed at least 20 percent of their annual budget. Whether the true figure is closer to one estimate or the other, the direction is undisputed, and the legislature has kept sharpening the recovery tools since 2000. This article explains, in practical terms, how recovery works, what the 2026 case law changes for debtors, what happens when the flat is sold, and how a foreign owner can defend themselves without making the classic mistakes.
I. The syndicate’s fast track: one missed payment can accelerate the whole year’s debt
French co-ownerships run on voted budgets. Each year the general meeting of co-owners votes a provisional budget, and each owner pays quarterly provisions towards it under article 14-1 of the Law of 10 July 1965, alongside calls for approved works outside the budget and contributions to the mandatory works fund. When one owner stops paying, every other owner effectively lends them money while the building’s insurance, lift maintenance and concierge still have to be paid. That is why article 19-2 of the same law builds what functions like an acceleration clause in a loan contract.
A. A single default, a thirty-day letter, then everything falls due at once
The mechanism is deliberately brutal. If one provision is not paid on its due date, and a formal demand — the mise en demeure (formal demand sent by recorded delivery) — remains unpaid for thirty days, then all the other provisions of the current year that are not yet due, plus the arrears of previous years whose accounts the general meeting has approved, become immediately payable. The current text of article 19-2 of the Law of 10 July 1965 states the rule in these terms: “A défaut du versement à sa date d’exigibilité d’une provision due au titre de l’article 14-1, et après mise en demeure restée infructueuse passé un délai de trente jours, les autres provisions non encore échues en application du même article 14-1 ainsi que les sommes restant dues appelées au titre des exercices précédents après approbation des comptes deviennent immédiatement exigibles.” In other words, once a single quarterly provision has been validly demanded and ignored for a month, the owners’ association can claim the entire year plus approved arrears in a single action, instead of suing quarter after quarter.
The association — the syndicat des copropriétaires (the legal entity formed by all co-owners), acting through its syndic (the professional or volunteer building manager) — then brings that accelerated debt before the president of the tribunal judiciaire (the ordinary civil court) sitting under the procédure accélérée au fond (a fast-track procedure that decides the merits of the case more quickly than ordinary proceedings). The judge verifies that the general meeting approved the budget, the works or the annual accounts as applicable, confirms that the co-owner has defaulted, and orders payment. There is no need to prove fault or damage: validly voted charges, a valid demand, and non-payment are enough. Since 1 January 2023 the current version of the article also covers contributions to the works fund now housed in article 14-2-1, and it allows enforcement against successive debts owed to the defaulting owner, such as rent paid by their tenant, to continue until the association’s claim is extinguished — a detail that matters greatly to foreign landlords whose French tenant’s rent can be intercepted.
Three conditions therefore decide every case: were the sums validly voted, was the formal demand valid, and did the owner actually default. The two 2026 rulings both concern the second condition, and both were won by the debtors, not by the associations.
B. The 2026 rulings: the demand letter must be precise, and each financial year needs its own warning
On 18 June 2026, the Third Civil Chamber of the Cour de cassation quashed a decision of the Rennes Court of Appeal of 27 June 2024 in a case that looked, at first glance, like an open-and-shut victory for the association (Cass. 3rd civ., 18 June 2026, No. 24-19.950). The association produced general-meeting minutes from 2008 to 2019 approving accounts, budgets and works, a statement of account stopped at 1 January 2022, and a recorded-delivery formal demand dated 11 June 2021 claiming 70,269.78 euros with an account statement attached. The first judge had ordered the owner to pay 77,128.51 euros, and the court of appeal confirmed. The Cour de cassation annulled the whole thing.
The reason is now the reference rule for every syndic in France. Confirming an opinion it had issued on 12 December 2024 (Opinion No. 24-70.007), the Court held that the formal demand required by article 19-2, which is the mandatory precondition for bringing the fast-track action, must state precisely the nature and the amount of the provisions claimed, failing which the claim is inadmissible. The operative holding quashes the appeal decision in these terms: “En se déterminant ainsi, sans rechercher, comme il le lui était demandé, si la mise en demeure du 11 juin 2021 détaillait le montant des provisions dues au titre de l’article 14-1 de la loi du 10 juillet 1965 restées impayées, ni constater la défaillance de Mme [O] dans le règlement desdites sommes dans le mois suivant la mise en demeure, la cour d’appel n’a pas donné de base légale à sa décision.” In plain English: a global figure plus an attached statement of account is not enough. (Cass. 3rd civ., 18 June 2026, No. 24-19.950). The letter itself must break down which provisions, for which budget year, in which amounts. The Rennes judges had merely noted an “explicit” demand and a balance of 68,541.03 euros plus provision calls from January 2020 to April 2021, without checking whether the letter detailed the provisions due under the provisional budget that were actually unpaid. That failure to verify deprived the decision of any legal basis, and years of arrears had to go back for retrial.
Five months earlier, on 15 January 2026, the same chamber had already cut a second limitation into the fast track (Cass. 3rd civ., 15 January 2026, No. 23-23.534). An association relying on a payment order of 11 September 2020 obtained condemnation for charges stopped at 1 January 2023, first quarter of 2023 included, totalling 20,388.61 euros. The Court partially quashed the Angers Court of Appeal’s decision of 19 September 2023 and sent the case to the Orléans Court of Appeal, holding that an association suing under article 19-2 can only claim later years’ provisions if it proves a fresh unsuccessful formal demand covering an unpaid provision of those later years. The operative sentence of the ruling is one long but decisive proposition: “Il en résulte que le syndicat des copropriétaires n’est recevable à agir sur le fondement de l’article 19-2 de la loi du 10 juillet 1965 qu’en paiement de provisions dues au titre de l’article 14-1 ou du I de l’article 14-2, ayant fait l’objet d’une mise en demeure, qu’il ne peut demander le paiement des provisions des exercices postérieurs à celui au titre duquel la demande initiale a été formée que s’il justifie d’une nouvelle mise en demeure de payer une provision restée impayée, et qu’il ne peut demander le paiement de sommes restant dues au titre des exercices non visés par une mise en demeure, pour lesquels les comptes du syndicat n’ont pas encore été approuvés.” In English: one old demand letter cannot carry three more years of charges. Each financial year needs its own valid warning, and unapproved accounts cannot be swept into the accelerated claim. The association was also ordered to pay 3,000 euros under article 700 of the Code of Civil Procedure — a reminder that a sloppy recovery action costs the building money, not just time.
For a foreign owner, the practical lesson of these two rulings is immediate. If you receive a recorded-delivery letter invoking article 19-2, do not look only at the total. Check whether the letter itself itemises, provision by provision, the budget year and the nature of each sum: provisional budget, approved works, works fund. Check which financial years are covered and whether you received a separate demand for each of them. Check whether the accounts for the years claimed have actually been approved by a general meeting. If any of those links is missing, the fast-track action built on that letter is vulnerable to an inadmissibility plea — but that plea must be raised before the judge, with the letter and the meeting minutes in hand. General information on how French property disputes are handled in Paris is available through our real estate law team in Paris, and the earlier stages of buying should not be confused with this recovery stage: once the sale is complete, only the recovery rules described here apply.
II. What secures the debt: legal mortgage, privilege and the sale-price trap
Acceleration gets the association a court order. Securities make sure the order can actually be enforced, including against a foreign owner who has left France or is selling up. Three layers of security stack on top of each other, and the buyer of a French flat inherits exposure to the seller’s arrears if the paperwork is mishandled.
A. A mortgage over your flat and an interception of the sale price
First, the association holds a special legal mortgage over the defaulting owner’s lot. Article 19-1 of the Law of 10 July 1965 provides, in its current wording in force since 1 January 2022: “Toutes les créances mentionnées au premier alinéa de l’article 19 sont garanties par l’hypothèque légale prévue à l’article 2402 du code civil.” The mirror provision in the Civil Code, article 2402, 3° of the Civil Code, states: “Les créances de toute nature du syndicat des copropriétaires relatives à l’année courante ainsi qu’aux quatre dernières années échues sont garanties sur le lot vendu du copropriétaire débiteur ;” In English, all claims of the association relating to the current year and the last four expired years are secured against the debtor’s lot when it is sold. This is an hypothèque légale spéciale (a special legal mortgage arising by operation of law, without any agreement or court order): it follows the flat into whoever’s hands it passes, within its time limits.
Second, when the flat is sold, the association can intercept the price. Under article 20, I of the Law of 10 July 1965, if the seller has not produced to the notaire (the public officer who authenticates French property sales) a certificate from the syndic, less than one month old, confirming the seller owes nothing, the notaire must notify the association of the transfer within fifteen days, and the association then has fifteen days from receipt to file an opposition (a formal objection served by extrajudicial act) blocking payment of the funds up to the amount claimed. The opposition must, on pain of nullity, state the amount and the grounds of the claim: “Cette opposition contient élection de domicile dans le ressort du tribunal judiciaire de la situation de l’immeuble et, à peine de nullité, énonce le montant et les causes de la créance.” Any payment of the price made in violation of a valid opposition cannot be set up against the association, and a valid opposition counts as enforcement of the article 19-1 legal mortgage. If seller and association agree, the notaire releases the funds; otherwise, three months after a valid opposition, the retained sums are paid to the association unless a court action contesting the opposition has been started.
But here again, precision is everything, and the Cour de cassation polices it strictly. On 22 June 2017, the Third Civil Chamber quashed a Chambéry decision that had upheld an opposition without requiring any breakdown (Cass. 3rd civ., 22 June 2017, No. 16-15.195). The Court recalled that an opposition must contain the detail of the sums claimed according to their nature and identify each lot to which they relate: “Qu’en statuant ainsi, alors que l’opposition doit comporter le détail des sommes réclamées selon leur nature et préciser chacun des lots auxquels ces sommes sont afférentes, la cour d’appel a violé les textes susvisés ;” (Cass. 3rd civ., 22 June 2017, No. 16-15.195). In English: a lump sum covering several lots or mixing budget provisions with works calls, without allocation, violates article 20 of the 1965 law together with article 5-1 of the Decree of 17 March 1967 and the privilege provisions of the Civil Code.
A 2023 ruling then clarified the exact price of imprecision (Cass. 3rd civ., 12 October 2023, No. 22-18.723). After a sale of three lots in a residence on 30 September 2019, the association served an opposition on 10 October 2019 stating a single total for “unpaid charges” with an account extract attached, without distinguishing the four categories of claims defined by article 5-1 of the Decree of 17 March 1967: current year plus last two expired years, the two years before those, mortgage-secured claims outside the privileged ones, and the remainder. The Court held that this failure to distinguish does not invalidate the opposition itself, but it costs the association the benefit of the special legal mortgage under article 2402 of the Civil Code: “Il résulte de la combinaison de ces textes, que l’absence de distinction, dans l’opposition formée par le syndic en application du premier, entre les quatre types de créances du syndicat prévue au second, si elle n’affecte pas la validité de cette opposition, constitue un manquement à une condition de forme de nature à faire perdre au syndicat le bénéfice de l’hypothèque légale spéciale prévue à l’article 2402 du code civil.” In English: the opposition survives as an ordinary claim on the price, but the priority security is lost. For the debtor, that distinction can decide whether the association gets paid first or joins the queue of unsecured creditors.
Third, and least known among foreign buyers, article 20, II now lets an association block a purchase before it happens. Before the authentic deed of sale is signed, the notaire notifies the syndic of the buyer’s identity — including, for a purchase through a société civile immobilière (a non-trading property company, commonly called an SCI), the company’s managers, shareholders and their spouses or civil partners. Within one month the syndic issues a certificate stating either that none of those persons already owns in the building, or, if one does, that they have not been left an unsuccessful formal demand for more than forty-five days. If the certificate shows arrears at that level, the notaire notifies the parties that the sale cannot proceed. A foreign family that already owns one flat in the building through an SCI and is buying a second one while charges on the first are disputed can therefore see the entire acquisition frozen — a trap that standard pre-sale searches do not always reveal in time.
B. Defending yourself: contest, challenge in time, and never ignore a recorded-delivery letter
The association’s arsenal is powerful, but it is formalistic, and formalism cuts both ways. A foreign owner facing a claim should work through the defences in a fixed order before paying anything.
Start with the vote. No charge is due unless the general meeting validly approved the provisional budget, the works or the annual accounts from which it derives. Ask the syndic for the meeting minutes, the voted budget and the approved accounts for every year claimed, and check the allocation key applied to your lot against the règlement de copropriété (the building’s registered by-laws). If a general meeting decision itself is irregular, it must be challenged by the dissenting or absent owner within two months of notification of the minutes, on pain of foreclosure — a short fuse that article 42 of the Law of 10 July 1965 states alongside the prescription rule: “Les dispositions de l’article 2224 du code civil relatives au délai de prescription et à son point de départ sont applicables aux actions personnelles relatives à la copropriété entre copropriétaires ou entre un copropriétaire et le syndicat.” In English, the five-year prescription of article 2224 of the Civil Code, with its starting-point rules, applies to personal actions between co-owners and the association. Old arrears are therefore not eternal: an association that slept on its claim for more than five years from exigibility may find it time-barred, and the starting point runs from when each sum became due, not from a global statement.
Continue with the demand letter, using the 2026 rulings as a checklist. Does the letter itemise the nature and amount of each provision, or does it state a global balance with an annex? Does it cover several financial years on the strength of a single old demand? Were the accounts for those years approved before the sums were claimed? Any negative answer supports an inadmissibility plea under article 19-2 as construed in June 2026 and January 2026. Raise it early: inadmissibility must be pleaded before the judge seised of the fast-track action, and producing the letter plus proof of what was actually received — keep every envelope with its postmark, especially if mail was forwarded abroad — is essential.
Then deal with the sale-time measures. If you are selling and an opposition lands with the notaire, check its formal validity (elected domicile, stated amount and grounds, fifteen-day window) and whether it distinguishes the four categories of article 5-1: a lump-sum opposition keeps its blocking effect but may have lost the mortgage priority, which changes the negotiation completely. An opposition can be contested in court, and the three-month consignment mechanism gives breathing room to litigate rather than pay under pressure. If you are buying, require the less-than-one-month certificate of no debt from the syndic before committing funds, verify that the seller’s name on the certificate matches the title, and if you already own in the building, clear any disputed demand more than forty-five days before the deed — otherwise article 20, II can stop the sale outright.
Three practical warnings apply specifically to owners living abroad. First, French procedural time runs from presentation of the recorded-delivery letter at your French address, not from when you actually read it on your next visit; give the syndic and the building’s caretaker a reliable correspondence address and open a French-law mailbox arrangement if needed. Second, extrajudicial acts and court orders are served in French and produce effects even if you do not understand them; have every mise en demeure, commandement de payer (a formal order to pay served by an enforcement officer) and opposition translated immediately, because the thirty-day, fifteen-day and two-month periods above run fast. Third, litigation has a price tag in both directions: the January 2026 case shows an association condemned to 3,000 euros under article 700, but a debtor who fights a well-documented claim faces the principal, legal interest, and costs too — so the file review should come before the fighting decision, ideally before the tribunal judiciaire of the building’s location, which in Paris means preparing for a specialised chamber with little patience for approximate paperwork.
One final boundary: this article concerns co-ownership charges owed to the building. They must not be confused with French property taxes, local housing taxes or income tax on rents, which follow entirely different recovery rules and calendars. Unpaid building charges can also affect the deductibility picture of a rented flat, but that is a tax question to put to a tax adviser with the actual assessments in hand, not a point to settle inside a charges dispute.
Conclusion
Unpaid copropriété charges in France trigger a three-stage machine: acceleration of the whole debt on a single thirty-day demand, fast-track condemnation by the court president, and security through a legal mortgage plus interception of the sale price. The machine is formidable but formalistic, and the Cour de cassation’s January and June 2026 rulings prove that formalism protects debtors too: an unitemised demand is inadmissible, one old letter cannot carry later years, and a lump-sum opposition loses its mortgage priority. For foreign owners, the winning posture is the same as for French ones, with one addition: organise your French mail, your translations and your diary as carefully as your defences, because every deadline in this field is short and none of them waits for your next trip to France. Check the vote, check the letter, check the categories — and act within weeks, not months.
Need a quick opinion on your case
If you have received a formal demand, an opposition notice or a court summons over French co-ownership charges, you can obtain a telephone consultation within 48 hours with a lawyer of the firm. Call +33 6 46 60 58 22 or contact us via our contact page with your demand letter and your latest statement of account.