Exclusive Mandate: Court of Cassation Annuls If You Did Not Receive a Copy Immediately

You have just signed an exclusive mandate with an estate agency in Sarreguemines. The agent told you: "Don't worry, I'll send you the document by email this evening." You trust them. But if you do not leave with a paper copy in hand, this mandate could be void. This is what the Court of Cassation ruled in a judgment of 25 February 2010. A decision that shakes professionals and protects owners.

Why such a requirement? Article 78 of Decree No. 72-678 of 20 July 1972 (the text governing estate agents) requires immediate delivery of a copy of the mandate. Not within 24 hours, not the next day: immediately. If this is not done, the mandate is struck by absolute nullity (total annulment). A question burns on your lips: what happens if the agent has already introduced a buyer?

The answer is clear: without a valid mandate, the owner has no obligation to pay a commission. Let's revisit this case that changed the game, with concrete examples in Yutz and elsewhere.

The facts: a story that happens every day

Mr. Dupont (name changed), owner of a flat in Sarreguemines, entrusts the sale of his property to an estate agency by signing an exclusive mandate. Does the agent give him a copy? No. He tells him he will send it by post. The mandate provides for a commission of 5% of the sale price. A few weeks later, the agency finds a buyer. The preliminary sale agreement is signed on 25 April. But Mr. Dupont, who had never received the copy of the mandate, refuses to pay the commission. The agency sues him to obtain payment.

The High Court of Metz rules in favour of the agency at first instance, holding that the failure to deliver immediately was not a ground for nullity. Mr. Dupont appeals. The Court of Appeal of Metz upholds the judgment. He then appeals to the Court of Cassation. The Court of Cassation sets aside the appeal judgment and refers the case back to the Court of Appeal of Nancy. Why? Because immediate delivery of a copy of the mandate is a condition of validity, not a mere formality.

A twist: in the meantime, the buyer had withdrawn, but the agency still claimed its commission. Ultimately, the nullity of the mandate deprived the agency of any right to remuneration. A victory for the owner.

The reasoning of the court — dissected

The Court of Cassation relies on Article 78 of the Decree of 20 July 1972 (which lists the mandatory terms of a mandate and requires delivery of a copy). It clarifies that this delivery must be immediate, i.e., at the time of signing. If it is deferred, the mandate is void. Why such strictness? To protect the owner from pressure: by leaving with a copy, they can reread the clauses at home, seek advice, and not regret their commitment.

The lower courts (trial court and court of appeal) had considered that the absence of delivery did not entail nullity if the mandate was performed in good faith. But the Court of Cassation contradicts them: the law provides for no exception. It does not matter that the agent found a buyer or that the owner signed the preliminary agreement: if the copy was not delivered on the spot, the mandate is void.

This decision confirms consistent case law since 2006 (Civ. 1ère, 14 November 2006). It reminds that protective formalities for the consumer are not mere formalities. Estate agents must be irreproachable on this point.

What this changes for you — concretely

If you are an owner and you sign an exclusive mandate, you must imperatively leave with a copy signed by the agent and by you. If the agent says "I'll send it by email", refuse. Demand the paper immediately. Otherwise, you can contest the commission, even if the sale goes through. Example: in Yutz, an owner signed an exclusive mandate for a house at €250,000, commission of 5% i.e. €12,500. The agent did not deliver the copy. The owner sold privately without paying a commission. The agent sued, but the nullity of the mandate was pronounced.

For tenants or buyers: you are not directly concerned, but you can check that the agent has a valid mandate before signing a viewing form. If the mandate is void, the owner can refuse to pay the agent, which may block the transaction.

For estate agents: this decision is a warning. It is not enough to have the mandate signed: you must deliver a copy immediately. Keep proof of this delivery (signature on a register, photo, etc.).

Time limits: an action for nullity is time-barred after 5 years from the signing of the mandate. Amounts: the lost commission can be several thousand euros.

Four tips to avoid this type of dispute

• Demand a paper copy immediately: never sign a mandate without leaving with a document signed by the agent. If the agent refuses, do not sign.
• Check the mandatory terms: Article 78 requires the price, duration, commission, professional card number, etc. If a term is missing, the mandate may be void.
• Keep all documents: keep the mandate, correspondence, proof of delivery. In case of dispute, you can prove that you did not receive the copy.
• Consult a lawyer before signing: a quick consultation can save you years of proceedings. Maître Zakine can help you check the validity of your mandate.

Further reading: related case law and developments

This decision is part of a consumer-protective line. Already in 2006, the Court of Cassation annulled a mandate for failure to deliver a copy (Civ. 1ère, 14 November 2006, No. 05-16.877). More recently, in 2018 (Civ. 1ère, 21 March 2018, No. 17-10.476), it extended this requirement to search mandates (buyer's mandates). Courts are increasingly strict: any breach of form is sanctioned. For the future, estate agents may need to provide for delivery by secure electronic means, but for now, paper remains the rule.

Caution: some judgments have tempered the strictness in cases of non-exclusive mandates (simple sale mandates). But for exclusivity, the rule is clear.

Checklist before acting

FAQ:

1. What if the agent did not give me a copy immediately? You can challenge the validity of the mandate and refuse to pay the commission. Consult a lawyer promptly.
2. Can I sell my property through another agent if the mandate is void? Yes, nullity renders the mandate void. You are free to entrust the sale to another professional.
3. Can the agent claim administration fees? No, if the mandate is void, the agent is entitled to no remuneration, neither commission nor fees.
4. What is the time limit to act? You have 5 years from the signing of the mandate to invoke nullity.
5. Do I have to prove that I did not receive the copy? Yes, but it is for the agent to prove that they delivered it. If they have no proof, the doubt benefits you.

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