You live in London, New York or Dubai and you own a flat in Paris. One morning, a registered letter from the building’s managing agent arrives at your French address, or sits waiting at the post office while you are abroad: the minutes of the last general meeting of co-owners. You open them and discover that the meeting voted a full façade restoration, a lift replacement and a new heating system for a total of 80,000 euros charged to your lot, or a change in the way charges are shared that adds several thousand euros a year to your bill. You did not attend, you never approved any of this, and your first instinct is that there must be a way to fight it.

There is, but it runs on one of the shortest fuses in French property law. Challenges to the decisions of a co-ownership general meeting must, on pain of forfeiture, be brought within two months of notification of the minutes, and only by co-owners who voted against the decision or who were absent. Once that window closes, even a decision that was illegally adopted becomes final and binds everybody, including you. The Cour de cassation confirmed this severity again in 2026, in a published ruling that also settled a practical question every owner living abroad should understand: the two months run from the first presentation of the registered letter, whether or not you ever collect it from the post office.

This guide explains the full challenge procedure as it stands on 7 October 2026: who is entitled to sue, how the two-month deadline is computed and proved, which grounds actually persuade a court, and what an annulment changes for the works, the charges and the building. It is written for non-resident owners of French flats, with the Paris practice points that matter when your property, your court and your managing agent are in France while you are not. French legal terms appear in italics with an English explanation at first use, and every decisive rule is quoted from the statute or the case that states it.

I. Who may challenge the vote, and when the two-month clock starts

The challenge procedure, called the action en contestation (action to challenge meeting decisions), is fenced in on both sides: by standing, because only certain co-owners may sue, and by time, because the deadline extinguishes the right itself rather than merely limiting damages. Understanding both fences before doing anything else is essential, because most foreign owners lose their case on one of these two preliminary points without the court ever examining the substance of their complaint.

A. Standing belongs to opponents and absentees, assessed resolution by resolution

The controlling text is the second paragraph of Article 42 of the Law of 10 July 1965 on co-ownership: « Les actions en contestation des décisions des assemblées générales doivent, à peine de déchéance, être introduites par les copropriétaires opposants ou défaillants dans un délai de deux mois à compter de la notification du procès-verbal d’assemblée, sans ses annexes. » (Article 42 of Law No. 65-557 of 10 July 1965). In English: actions challenging general-meeting decisions must, on pain of forfeiture, be brought by dissenting or defaulting co-owners within two months of notification of the meeting minutes, without their appendices. Three consequences flow directly from this single sentence, and each of them traps unwary owners.

First, a co-owner who voted in favour of a resolution cannot challenge it afterwards, even if they later discover the decision was irregular or ruinously expensive. Only the copropriétaire opposant (dissenting co-owner, the one who voted against a resolution that was adopted, or voted for a resolution that was rejected) and the copropriétaire défaillant (defaulting co-owner, the one who was absent and unrepresented when the resolution was voted) have standing. If you attended the meeting and abstained, French courts treat you as neither an opponent nor a defaulter for that resolution, which means abstention is the worst possible choice for an owner who has doubts: attend and vote against, or stay away entirely, but do not sit in the room and abstain. For owners living abroad, the practical lesson is to be represented by a proxy with written instructions to vote against any resolution you might later wish to contest, because a proxy who votes in favour binds you exactly as if you had raised your own hand.

Second, standing is assessed resolution by resolution. You may challenge the façade-works resolution you voted against while being barred from attacking the budget resolution you approved at the same meeting. Conversely, a co-owner who was absent or who voted against every single resolution may ask for the annulment of the general meeting as a whole, not merely of isolated decisions. This resolution-by-resolution logic shapes litigation strategy: a claimant lists precisely which resolutions are attacked and demonstrates, for each one, the vote recorded in the minutes or their absence from the attendance sheet. The minutes therefore deserve immediate scrutiny on receipt, because an error in how your vote was recorded can itself become a ground for challenge, and because the attendance sheet determines who counts as defaulting.

Third, no particular harm needs to be shown. The official public-service guidance confirms that it is enough to demonstrate that a legal rule governing the organisation or operation of the meeting, or the decision itself, was breached, without proving any specific prejudice. A foreign owner does not have to show that the overpriced works contract personally ruined them; proving that the vote was taken at the wrong majority or on a question missing from the agenda suffices. This no-prejudice rule is confirmed at the highest level: in a June 2026 ruling examined below, the Cour de cassation held that a co-owner attacking a meeting convened by a managing agent without authority needs to prove neither any grievance nor any fault by the agent. The action is directed against the syndicat des copropriétaires (the co-owners’ association), represented by the syndic (the managing agent), before the court of the place where the building stands, and representation by a lawyer is compulsory.

Standing questions can also arise in subdivided buildings. The Cour de cassation held on 26 May 2016 that the owner of lots within the main association may challenge the creation of a secondary association, and that this action falls under the first paragraph of Article 42 rather than the two-month second paragraph: « Mais attendu qu’ayant, par motifs propres et adoptés, relevé que la société Suffren était propriétaire de lots relevant du syndicat principal, la cour d’appel a retenu, à bon droit, qu’elle avait qualité à contester la création du syndicat secondaire et que son action relevait des dispositions de l’article 42, alinéa 1, de la loi du 10 juillet 1965, à l’exclusion de l’alinéa 2 de ce texte ; » (Cass. 3rd civ., 26 May 2016, No. 15-14.475). In English: having found that the company owned lots within the main association, the appeal court correctly held that it had standing to contest the creation of the secondary association, under the first paragraph of Article 42 rather than its second paragraph. For a foreign buyer acquiring a lot in a large Paris residence divided into several buildings, the point matters: structural decisions about the organisation of the co-ownership itself may follow a different procedural track from ordinary challenges to meeting resolutions, and the applicable deadline must be identified before any writ is drafted.

B. The two-month deadline runs from first presentation, collected or not

The two months do not run from the meeting, nor from the date you actually read the minutes. They run from notification of the minutes to each dissenting or defaulting co-owner, which the managing agent must send within one month of the meeting. The implementing decree specifies the mechanics: « Le délai prévu au deuxième alinéa de l’article 42 de la loi du 10 juillet 1965 pour contester les décisions de l’assemblée générale court à compter de la notification du procès-verbal d’assemblée à chacun des copropriétaires opposants ou défaillants. » (Article 18 of Decree No. 67-223 of 17 March 1967). In English: the deadline for challenging general-meeting decisions runs from notification of the meeting minutes to each dissenting or defaulting co-owner. The same article adds a formal requirement that practitioners check first: the notification must state the voting results and reproduce the text of the second paragraph of Article 42. A notification that omits this reproduction is defective, and the defect can keep the challenge window open, which is why the letter itself, not just the minutes, must be preserved and examined.

For owners living abroad, the decisive ruling is the published judgment of 16 April 2026. A co-owner argued that the two months should run from first presentation of the registered letter only where the letter was never collected, implying that collecting it late should give him more time. The Third Civil Chamber rejected the argument outright: « La loi ne distinguant pas, selon que le pli recommandé est ou non retiré par son destinataire, pour fixer le point de départ du délai de deux mois pour agir en contestation des décisions d’une assemblée générale de copropriétaires, ce délai court, dans tous les cas, à compter du lendemain du jour de la première présentation de la lettre recommandée, de notification du procès-verbal de l’assemblée générale, au domicile du destinataire. » (Cass. 3rd civ., 16 April 2026, No. 24-18.842, published in the Bulletin). In English: since the statute makes no distinction according to whether or not the registered letter is collected by its addressee, the two-month period always runs from the day after the letter notifying the meeting minutes is first presented at the addressee’s home. Collecting the letter two weeks later does not give you two extra weeks. Letting it sit at the post office until it is returned does not stop the clock. For a non-resident owner, the consequences are concrete: the clock can expire while you are on another continent, unaware that anything was ever decided. Three precautions follow. First, keep an address in France where registered mail is actually monitored, whether a tenant with instructions, a local contact, or the managing agent’s office where you collect mail between stays. Second, consider consenting to electronic notification, which the reformed decree now organises in detail: deadlines triggered electronically run from the day after transmission of the electronic notice by the qualified trust provider. Third, where you insist on postal mail, the current rule preserves the registered-letter route on request: « Le délai qu’elles font courir a pour point de départ le lendemain du jour de la première présentation de la lettre recommandée au domicile du destinataire. » (Article 64-1 of Decree No. 67-223 of 17 March 1967). In English: the period they trigger starts on the day after the registered letter is first presented at the addressee’s home. The rule is stable; only the medium changes.

If the managing agent never notifies you at all, the two-month period never starts, but you are not free to sue forever. The first paragraph of Article 42 refers personal actions between co-owners, or between a co-owner and the association, to the ordinary five-year limitation period: « Les actions personnelles ou mobilières se prescrivent par cinq ans à compter du jour où le titulaire d’un droit a connu ou aurait dû connaître les faits lui permettant de l’exercer. » (Article 2224 of the Civil Code). In English: personal or movable actions are time-barred after five years from the day the holder of a right knew, or should have known, the facts enabling them to act. The public-service guidance confirms the five-year fallback where minutes were never sent. In practice, however, relying on the fallback is a gamble: you must prove the absence of notification, and managing agents routinely produce postal records. Treat every meeting you hear about as triggering the two-month period, and demand the minutes in writing if they do not arrive.

The price of missing the deadline is absolute, and the Cour de cassation illustrated it in a case about private walls. Co-owners had voted works on low boundary walls; one owner refused to pay her share, arguing the walls were private parts outside the meeting’s powers. The trial court agreed with her. The Cour de cassation quashed that reasoning: « Il résulte de l’alinéa 2 de ce texte que les actions en contestation des décisions des assemblées générales doivent, à peine de déchéance, être introduites par les copropriétaires opposants ou défaillants dans un délai de deux mois à compter de la notification du procès-verbal d’assemblée. » (Cass. 3rd civ., 12 January 2022, No. 20-20.363). In English: actions challenging general-meeting decisions must, on pain of forfeiture, be brought by dissenting or defaulting co-owners within two months of notification of the meeting minutes. Once the two months expire, a dissenting or defaulting co-owner is barred from contesting the resolutions, even incidentally as a defence against a payment claim, even where the decision allegedly infringes the use of their private parts and charges them for it. You cannot wait to be sued for the charges and then plead the illegality of the vote: the illegality defence dies with the two-month window. Owners who need structured assistance identifying their standing and computing their exact deadline from a Paris notification can turn to the firm’s Paris real estate law practice for foreign owners before the window closes, because after it closes there is ordinarily nothing left to argue.

II. The grounds that win, and what an annulment actually changes

Assuming standing and timeliness are secured, the dispute moves to substance: which defects actually annul a resolution, and what the annulment is worth in money and works. French courts annul meeting decisions on a closed logic of rules rather than fairness. A resolution that is merely expensive, ill-advised or badly timed survives; a resolution adopted in breach of the applicable voting majority, on a question never put on the agenda, or at a meeting that was never validly convened, falls. The distinction matters enormously for foreign owners tempted to sue because the works seem overpriced: cost alone is not a ground, and the grounds that work must be identified in the writ from the outset.

A. Majorities, convening defects and abuse of majority

Voting majorities in co-ownership form a ladder, and each rung decides different matters. The default rung is the simplest: « Les décisions de l’assemblée générale sont prises à la majorité des voix exprimées des copropriétaires présents, représentés ou ayant voté par correspondance, s’il n’en est autrement ordonné par la loi. » (Article 24 of Law No. 65-557 of 10 July 1965). In English: general-meeting decisions are taken by a majority of the votes cast by co-owners present, represented or voting by post, unless the statute provides otherwise. Abstentions and spoilt votes do not count, which means a resolution can pass with few votes in a thinly attended meeting, a frequent configuration in Paris buildings where many owners live abroad and never vote. The heavier rungs are absolute: Article 25 requires the majority of the votes of all co-owners, present or not, for matters such as delegations of power and certain works authorisations, while Article 26 requires members holding at least two-thirds of the votes for disposals, acquisitions and amendments to the co-ownership rules. The most common winning ground in practice is a resolution passed at the wrong rung: works requiring an absolute majority carried by a simple majority of those present, or a disposal of common parts voted without the two-thirds threshold. Verifying the applicable rung for the exact resolution attacked is therefore the first analytical step, and it requires reading the resolution against the statute rather than trusting the minutes’ assertion that the vote was regular. Agenda defects form the second classic ground: a meeting may only vote on questions entered on the notified agenda, and a resolution adopted on an unlisted question is annullable even if every owner present approved it. For the absent foreign owner, this ground has a particular resonance: the agenda you received before the meeting defines the perimeter of what could lawfully be decided without you, and anything outside it was decided without your even theoretical consent.

Convening defects form the third family, and a June 2026 ruling gave it new sharpness. Where the meeting that appointed the managing agent is itself annulled, the agent is retroactively stripped of the power to convene later meetings, and everything convened by that agent can fall like dominoes: « Il en résulte que le syndic étant dépourvu du pouvoir de convoquer l’assemblée générale par l’effet rétroactif de l’annulation de l’assemblée générale qui l’a désigné, la convocation à une assemblée générale qu’il a délivrée et l’assemblée générale ainsi convoquée sont susceptibles d’être annulées à la demande d’un copropriétaire agissant dans le délai de deux mois précité, sans qu’il soit tenu de justifier d’un grief ou d’une faute du syndic. » (Cass. 3rd civ., 18 June 2026, No. 24-19.231). In English: since the managing agent lacks the power to convene the general meeting by retroactive effect of the annulment of the meeting that appointed them, the notice they issue and the meeting so convened may be annulled at the request of a co-owner acting within the two-month period, with no need to prove any grievance or any fault by the agent. In buildings with a history of disputed meetings, which Paris practitioners encounter regularly, the cascade matters: annulling one meeting can poison the authority behind the next, and a co-owner who lost the first battle on time limits may find the second meeting vulnerable on convening power. Note the double confirmation that no prejudice and no fault need proving; the irregularity alone suffices, exactly as the public-service guidance states.

The fourth ground, abus de majorité (abuse of majority), polices not the procedure but the use of voting power itself. A majority that votes a resolution contrary to the collective interest in order to favour some owners at the expense of others commits an abuse, and courts annul the resolution and may order restoration. In January 2026 the Cour de cassation upheld the annulment of resolutions that had retrospectively approved works differing from those the meeting had authorised, works that had cut into the roof, altered the building’s exterior and escaped the co-ownership architect’s control: « elle a relevé, à bon droit, que les SCI Maria et Theresia, copropriétaires, étaient en droit de demander la remise dans leur état initial des ouvrages modifiés sans autorisation de la copropriété. » (Cass. 3rd civ., 29 January 2026, No. 23-14.955). In English: it correctly held that the co-owners were entitled to demand that works altered without the co-ownership’s authorisation be restored to their initial state. The Court added that restoration measures are not disproportionate merely because they deprive the offender of the use of their property for a few months, where they repair an unauthorised interference with the building’s structure and appearance. For foreign owners, the abuse doctrine cuts both ways and deserves careful handling: it protects a minority owner against a majority that votes self-serving works, but it also threatens an owner who carries out unauthorised works in their Paris flat and then seeks majority absolution afterwards. Authorisation first, works second; the reverse order is litigated at the offender’s expense.

B. Effects of annulment, frozen works, and the Paris roadmap for owners abroad

An annulled resolution is deemed never to have existed, and the annulment binds all co-owners, including those who never sued. That retroactive, collective effect is the strategic prize of the action: one successful claimant frees the whole building from the decision. But the prize has boundaries that must be understood before suing. First, annulment does not release anyone from the general obligation to pay charges; arrears voted in other, unchallenged resolutions remain due, and the association’s contractors paid in good faith keep their money. Second, where the annulled decision altered the sharing of charges, the court itself reallocates: the statute provides that if a challenge to a decision modifying the allocation of charges succeeds, the judicial court carries out the new allocation. The action is therefore also a remedy for foreign owners trapped by an unfair redistribution of costs, not only for those opposing works.

Third, and most practically, the statute freezes the most expensive category of decisions while the challenge window runs: « Sauf urgence, l’exécution par le syndic des travaux décidés par l’assemblée générale en application des articles 25 et 26 de la présente loi est suspendue jusqu’à l’expiration du délai de deux mois mentionné au deuxième alinéa du présent article. » (Article 42 of Law No. 65-557 of 10 July 1965). In English: except in an emergency, implementation by the managing agent of works decided under Articles 25 and 26 is suspended until the two-month period expires. Filing the action within the period therefore does more than preserve a legal argument: it keeps the scaffolding off the façade while the court decides, unless genuine urgency is shown. Owners who discover a major works programme in their minutes should treat the suspension as a reason to act in the first days, not the last, because once the two months expire without proceedings, the agent may lawfully instruct the contractors and the financial machinery of calls for funds begins.

The Paris and Île-de-France specifics complete the picture. Territorial jurisdiction belongs exclusively to the court where the building stands: « En matière réelle immobilière, la juridiction du lieu où est situé l’immeuble est seule compétente. » (Article 44 of the Code of Civil Procedure). In English: in real-property matters, only the court of the place where the building is situated has jurisdiction. For a Paris flat, that is the Paris judicial court; the writ is served on the association, represented by the managing agent, by a commissaire de justice (court enforcement officer, formerly the huissier), and counsel must be a lawyer entitled to plead before that court. Foreign owners should organise three things before any dispute arises: a reliable channel for registered and electronic mail from the managing agent, a standing arrangement with a proxy-holder for meetings with instructions recorded in writing, and a systematic request for the minutes after every meeting, by a traceable means, so that the starting point of the two months can later be proved or contested. Keep the envelope, the electronic notice and the minutes together; photograph the postmark; and never assume that being abroad tolls any deadline, because it does not. Where the meeting also voted to authorise the managing agent to recover unpaid charges through simplified procedures, or elected a new conseil syndical (owners’ advisory council) whose composition looks irregular, each resolution must be examined separately under the standing and majority rules above rather than attacked as an indistinct whole. Readers dealing with the Paris end of such a dispute, from computing the deadline on a notification received abroad to serving proceedings on a Paris managing agent, can review how the firm’s real estate litigation team in Paris assists international owners with meeting challenges before the local courts.

Conclusion

A French co-ownership meeting can lawfully impose on an absent foreign owner tens of thousands of euros of works and a new distribution of charges, and the only remedy runs through a two-month action reserved to those who voted against or stayed away. The 2026 case law hardens every side of that remedy: the deadline starts the day after the registered letter is first presented, collected or not; missing it bars even an illegality defence raised later against a payment claim; a meeting convened by an agent whose appointment was annulled can itself be annulled without proof of any grievance; and a majority that retrospectively blesses unauthorised works commits an abuse that ends in court-ordered restoration. The procedure rewards owners who read their minutes the day they arrive, verify how each vote was recorded, check the applicable majority rung by rung, and instruct counsel within days rather than weeks, while the statutory suspension keeps disputed works on hold. Kept to that timetable, the challenge is a precise instrument: one well-founded action, brought in time by a single dissenting owner, erases the unlawful decision for the entire building.