Lack of authority of the syndic: the Court of Cassation reminds that a substantive irregularity cannot be regularised after the expiry of the limitation period

Imagine for a moment: you own a flat in Capbreton, in a development built ten years ago. Cracks appear on the façade, the roof leaks. The syndic, mandated by the management committee, brings legal proceedings against the builder. But the general meeting of co-owners never voted to authorise the legal action. A few years later, the builder raises the irregularity: the syndic did not have the authority to act. Can this situation be regularised after the event? This is precisely the question decided by the Court of Cassation in a judgment of 11 May 2000 (No. 98-17.179).

This decision is crucial for any co-owner, but also for any building professional. It reminds us that certain procedural rules are absolute: a substantive irregularity, such as the lack of authority of the syndic, cannot be covered after the expiry of the legal time limit for acting (the limitation period, i.e. the period after which legal proceedings can no longer be brought).

But what does this mean in concrete terms for you? How should you react if your syndic takes legal action without authorisation? And above all, how can you avoid this type of dispute? I will explain everything to you, with concrete examples from my practice in Mont-de-Marsan.

The facts: a story that happens every day

Let us return to the facts of the case. A syndicate of co-owners, represented by its syndic, had sued several builders (the building contractor) for compensation for defects affecting the building. The judgment at first instance was given, but the builders appealed, raising a procedural argument: the syndic had not received authorisation from the general meeting to take legal action when the proceedings were initiated.

Indeed, according to Article 55 of the Decree of 17 March 1967, the syndic cannot take legal action on behalf of the syndicate without having been expressly authorised by a decision of the general meeting. This authorisation must be given before the claim is filed. In this case, the authorisation was given by a general meeting on 6 March 1997, i.e. after the proceedings had been initiated, and for "the current proceedings".

The court of appeal had validated this late regularisation, considering that the general meeting had covered the lack of authorisation. But the Court of Cassation overturned this decision: it recalled that the lack of authority of the syndic is a substantive irregularity (i.e. a nullity that affects the very validity of the act) and that it can no longer be regularised after the expiry of the time limit for bringing the action (the ten-year limitation period of Article 1792 of the Civil Code). In short, once the period has passed, it is too late to grant authority retrospectively.

What few people know is that this solution applies both to actions for damages and to recourse actions (i.e. the action of the project owner against the builders to obtain indemnification after having been condemned). In this case, the syndicate had acted for damages, but the builders were trying to bring in other professionals as guarantors. The Court of Cassation extended the same reasoning.

The reasoning of the court — dissected

To understand the judgment, one must distinguish between two types of nullities in civil procedure. On the one hand, nullities for procedural defect (e.g., a lack of signature on the claim) which can be covered if the party invoking them has not suffered any grievance. On the other hand, substantive nullities, which are more serious because they affect the capacity of the person to take legal action. The lack of authority of the syndic is a substantive nullity, as Article 117 of the Code of Civil Procedure reminds us.

However, a substantive nullity cannot be regularised after the expiry of the time limit for acting. Why? Because the limitation period (here, the ten-year guarantee of Article 1792 of the Civil Code, which is 10 years from the acceptance of the works) is a final deadline. Once this period has elapsed, the right of action is extinguished. Allowing regularisation after this period would be tantamount to reviving a time-barred action, which the law prohibits.

In this case, the initial claim had been served before the expiry of the ten-year period, but the syndic did not have the authority. The general meeting granted authority after the period. The court of appeal considered that the authorisation given for "the current proceedings" was valid. But the Court of Cassation quashed the judgment with reference to Articles 1792 and 2270 of the Civil Code (now 1792 and 1792-4-1) and Article 55 of the Decree of 17 March 1967.

In other words, the high court considered that the initial irregularity (the lack of authority) rendered the claim null ab initio (from the start). And this nullity could not be covered after the limitation period. The lower courts should have declared the action inadmissible.

Note, however: if the authorisation had been given before the expiry of the period, even after the claim, the regularisation would have been possible. It is the timing that is crucial. undefined, I have come across cases where syndics obtained a retrospective authorisation a few days before the limitation period, which is valid. But here, the authorisation was after the period.

What this changes for you — concretely

This decision has very strong practical implications, depending on your profile.

For co-owners: You must check that the syndic has received an express mandate from the general meeting before bringing legal proceedings. If not, the action risks being declared inadmissible, and you could lose the benefit of the ten-year guarantee. Example: in Saint-Vincent-de-Tyrosse, a condominium of 12 units suffered from water ingress. The syndic sued the builder in 2018, but the AG only authorised the action in 2020, after the ten-year limitation period. Result: the action was declared inadmissible, and the co-owners had to pay for the repairs themselves (approximately €45,000).

For builders and building professionals: This case law protects you against late actions. If you are sued by a syndicate without authority, you can raise the nullity of the claim as soon as you become aware of it. But caution: the objection must be raised in limine litis (i.e., before any defence on the merits). Otherwise, you risk covering the irregularity.

For syndics: Be rigorous. Before filing a claim, ensure you have an AG resolution expressly authorising you to act. If the AG has not yet taken place, do not serve the claim. You can convene an emergency AG. And if the action is already underway without authority, have a ratification vote as soon as possible, but before the limitation period expires.

For buyers: When purchasing a unit, inquire about ongoing legal actions. If the syndic has acted without authority, the repair works may not be covered by the builders. Demand a certificate from the syndic confirming the regularity of the actions.

Four tips to avoid this type of dispute

• Check the syndic's mandate before any action: At the first general meeting of the year, include on the agenda a general authorisation to take legal action for apparent defects. This avoids emergencies.
• In an emergency, convene a special AG: The notice period is at least 15 days. If the limitation period is approaching, request written authorisation (unanimous agreement) but note that this is only valid if all co-owners agree.
• Keep the resolutions carefully: The syndic must file the AG minutes in a register. In case of a dispute, you will be able to prove the authorisation.
• Use a specialised lawyer: Before filing a claim, a lawyer will check the regularity of the procedure. It is an investment that avoids costly nullities.

Further reading: related case law and developments

This judgment is part of a consistent line of case law. The Court of Cassation has already held, in a judgment of 12 June 1991 (No. 89-20.145), that the lack of authorisation of the syndic is a substantive nullity that can be raised at any stage. More recently, in a judgment of 4 February 2016 (No. 14-29.456), it specified that ratification by the general meeting after the expiry of the limitation period cannot cover the irregularity.

This position is logical: it protects the legal certainty of builders, who cannot be exposed to actions indefinitely. The trend is therefore towards strengthening formal requirements, to the detriment of negligent syndicates. For condominiums, this means being particularly vigilant about deadlines.

In the future, we can expect the Court of Cassation to maintain this strictness, or even extend it to other substantive defects. The ALUR law of 2014 already strengthened the obligations of syndics, but on this point, case law remains the main safeguard.

Summary and next steps

Here is what you need to remember, in checklist form:

1. Before bringing legal proceedings, the syndic must have express authorisation from the general meeting (Article 55 of the 1967 Decree).
2. This authorisation must be given before the expiry of the limitation period (10 years for the ten-year guarantee).
3. If the authorisation is given after the limitation period, the action is inadmissible, even if the claim was served before.
4. If you are a builder and you receive a claim without authority, raise the nullity in limine litis.
5. If in doubt, consult a lawyer specialising in property law.

Are you in a similar situation? A 30-minute initial consultation with Maître Zakine (€45) can save you months of proceedings — and often much more. Book an appointment →