Sales, property management and search mandates
Estate agent dispute lawyer in Paris: review the mandate.
Commission claimed after an abandoned sale, information withheld before a purchase, rent collected but not paid over: the remedy depends on the assignment given to the agent. As an estate agent dispute lawyer in Paris, the firm examines the mandate, the professional's diligence and the documents showing your loss in order to determine the claim to bring.
A disputed commission, withheld rent or an unused unpaid-rent guarantee call for different checks: keep the mandate and your correspondence before any termination.
Estate agent dispute · Paris
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Send the mandate, the claim received, the management accounts and your correspondence: the firm examines the agency's obligations and the remedies available.
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Kohen Avocats, Paris 17
Estate agent dispute: the mandate, faults and evidence
Real estate law · Paris 17th arrondissement
What an estate agent dispute lawyer does in Paris
- Paris Bar
- Real estate law
- Sales and property management
Reda Kohen, avocat at the Paris Bar, sees clients at the firm, located at 11 rue Margueritte, in the 17th arrondissement of Paris.
A dispute with an estate agency may involve the seller, the buyer, the landlord or the client of a property finder (chasseur immobilier). The firm first identifies the assignment accepted: negotiating a sale, searching for a property or managing a letting, each with its own obligations.
The mandate sets out the professional's powers within the meaning of Article 1984 of the French Civil Code (Code civil), subject to the requirements of the Hoguet Act. Liability towards the principal arises in particular under Article 1992; towards a buyer who is not the principal, a fault may give rise to tort liability under Article 1240. Fault, loss and the causal link must be established before compensation is sought.
Send what you have, even if incomplete: the firm will prioritise and complete the file with you. In an emergency, call +33 6 46 60 58 22.
Official profile in the directory of French lawyers (CNB)Firm at 11 rue Margueritte, 75017 Paris
Sales: checking and advising
The information given must be assessed in light of the property, the project announced and what the professional could actually have known.
Management: rendering accounts
Rent collected, sums paid over and fees deducted must be capable of being reconciled with supporting documents, in accordance with Article 1993 of the Civil Code.
Commission: reviewing the commitments
The mandate, the terms of remuneration and any exclusivity clauses must be examined before a commission is accepted or contested. Staying silent does not resolve the claim.
The rules
Mandate, advice, accounts: the rules on estate agent disputes
The basis of the claim depends on your capacity and on the obligations actually entrusted to the professional.
- Article 6 of Law No. 70-9 of 2 January 1970 (Hoguet Act) requires a written document setting out, among other things, the remuneration and the rendering of accounts. For sales, Articles 72 and 73 of Decree No. 72-678 of 20 July 1972 govern the prior mandate and the remuneration.
- The agent is liable for faults in carrying out the mandate (Article 1992 of the Civil Code). A buyer who is not the principal may seek the professional's tort liability (Article 1240). Concerning a dwelling sold to be let, the judicial court (tribunal judiciaire) stated: “It is therefore for the agent to guarantee the regularity of the transaction with which it is entrusted” (our translation) (TJ Montpellier, Civil Division section 3, 10 July 2026, No. 24/00896). The extent of the checks required is still assessed according to the circumstances.
- The manager must account for the management and the sums received (Article 1993 of the Civil Code). Unpaid rent and a lack of diligence may justify a claim for payment and for termination. In the case examined in Lille, the court held: “The breaches noted are sufficiently serious to justify termination of the property management mandates at the sole fault of the company NG INVEST.” (our translation) (TJ Lille, chamber 01, 19 June 2026, No. 25/05399).
- Exclusivity and the penalty clause must comply with Article 78 of the Decree of 20 July 1972: an express stipulation, very prominent type and delivery of a copy to the principal. The sum provided for may not exceed the fees stipulated for the transaction; the conditions for applying the clause remain to be checked.
An agency instructed to sell is not necessarily instructed to manage the property. A fall in yield is not, on its own, enough to establish a fault by the professional or a compensable loss of opportunity.
Your documents
What to send depending on the agency's assignment
The mandate and the chronology of exchanges make it possible to distinguish the obligations promised from the services actually performed.
Sale or search
Seller, buyer or client of a property finder
- Signed mandate, annexes, amendments and proof that your copy was delivered
- Advertisement, viewing form, offer, promise to sell and deed of sale, where they exist
- Commission invoice, the agency's claim and termination correspondence
- Information about your project, documents given to you before the purchase and evidence of the loss
Property management
Landlord or principal
- Management mandate, leases, rent statements and relevant bank statements
- Management reports, fees deducted and requests for explanations
- Guarantee contract, Visale file, declarations and refusals of cover
- Inventories of condition, dated photographs, quotes and correspondence about damage
Before taking any step, distinguish unpaid rent from rent collected but not paid over, and check the terms of the guarantees taken out. Ending an exclusive mandate must also be prepared after reading its clauses, so as to anticipate any challenge.
The firm also handles:
- Preliminary sale agreement
- Latent defects in property
- Rent recovery
- Liability of the agent
The method
How the firm prepares your claim
Identify the obligation breached, gather the evidence and present a claim proportionate to the loss established.
Step 1
Studying the mandate and the documents
The preliminary review at €80 incl. VAT provides a first analysis of the mandate, the chronology and the difficulties reported to the firm.
Step 2
Distinguishing the claims
Return of funds, challenge to fees, production of accounts or compensation for a fault: each claim must correspond to an identifiable obligation.
Step 3
Sending a substantiated claim
The firm prepares the formal notice and examines the agency's reply, as well as any involvement of its insurer or financial guarantor.
Step 4
Negotiating or going to court
Depending on the evidence and the points disputed, the firm seeks an agreement or prepares the court claims for payment, termination and compensation.
The financial guarantor of funds held, the professional liability insurer and the unpaid-rent guarantee serve distinct functions. The conditions under which each applies must be examined separately.
The timetable
The timeline of a dispute with an estate agency
The order of steps depends on the documents available and on urgency, with no procedure duration announced in advance.
Keep the evidence
From the moment of disagreement. Gather the mandate, the sale or management documents and the correspondence in chronological order, with their attachments.
Define the disagreement
Identify the disputed commission, the missing funds or the omitted step, then separate each claim with its own supporting documents.
Check the deadlines
Examine the limitation period, the provisions on terminating the mandate and the declaration conditions set out in the relevant guarantee file.
Claim in writing
Request the explanations, accounts or payment expected, keeping proof of sending and of the professional's reply.
Consider an amicable resolution
Discuss a documented settlement; if the client is a consumer, check the admissibility conditions for consumer mediation.
Bring the appropriate action
Where there is no solution, present the claims to the competent court and, if necessary, arrange for the management documents to be produced.
The checks
What the firm checks before any claim
The claim must match your position and the exact commitments of the professional concerned.
- Capacity of the claimant and assignment accepted: seller-principal, buyer who is not the principal, landlord or client under a search mandate.
- Signed document, powers granted, remuneration, exclusivity and clauses applying after the mandate expires, with evidence of viewings and introductions.
- Alleged fault, information available to the professional, steps taken and evidence of reminders, of sums collected or of the absence of any declaration of unpaid rent.
- Limitation period for the client's action: in principle, five years from the day the facts enabling action were actually or should have been known (Article 2224 of the Civil Code).
- Loss and causal link: funds withheld, expenses incurred and justified or loss of opportunity, without automatically claiming every loss from the manager.
Summary
Situation, evidence, deadline, action
These situations guide the analysis of the mandate and the first claims to be addressed to the professional concerned.
Situation
Disputed sales commission
Decisive evidence: Mandate, invoice, the parties' commitment and evidence of the agency's involvement.
Timing: Examine the claim as soon as it is received, before acknowledging the debt.
Useful action: Check whether the fees are due, how they are calculated and who is liable to pay them.
Situation
Ending an exclusive mandate
Decisive evidence: Copy delivered, prominent clauses, date of signature and letter of termination.
Timing: Check the conditions of Article 78 of the Decree of 20 July 1972 and its exceptions.
Useful action: Prepare the termination and examine any claim based on exclusivity.
Situation
Information withheld before the purchase
Decisive evidence: Advertisement, project communicated, documents handed over and evidence of the failure to inform.
Timing: In principle, five years from the starting point under Article 2224 of the Civil Code.
Useful action: Establish the failure in the duty to advise and its effect on the decision to buy.
Situation
Rent collected but not paid over
Decisive evidence: Management accounts, bank movements and details of the deductions disputed.
Timing: Check the payment dates for passing on rent set out in the mandate.
Useful action: Request the accounts and payment of the justified balance, and examine the position of the funds held.
Situation
Unpaid rent or damage poorly followed up
Decisive evidence: Mandate, inventories of condition, rent statement, guarantee and chronology of steps taken.
Timing: Check the declaration conditions of the guarantee that applies.
Useful action: Distinguish the tenant's debt from the consequences attributable to a fault by the manager.
Situation
Commission claimed by a property finder
Decisive evidence: Search mandate, properties presented, viewings and date of the purchase.
Timing: Check the term of the mandate and any clauses that take effect after it expires.
Useful action: Analyse the introduction, the scope of the contract and the basis of the commission claimed.
Frequently asked questions
Your questions: estate agent disputes
Problem with an estate agency: who should you turn to?
First send the agency a written complaint, identifying precisely the contract, the facts complained of and the documents or sums requested. Attach the relevant documents and keep proof of this step, rather than multiplying telephone exchanges that leave no trace. If you are a consumer, consumer mediation may then be considered under Articles L. 612-1 and L. 612-2 of the Consumer Code (Code de la consommation). The prior complaint is not enough on its own: the mediator's jurisdiction and the other admissibility conditions remain to be checked. A lawyer examines in parallel the agency's obligations and the applicable limitation period, in particular if funds are still being withheld or if a commission is claimed. The firm thus determines whether your estate agent dispute calls for a claim for payment, a challenge to fees or a liability action.
Can you file a criminal complaint against an estate agency?
Filing a criminal complaint against an estate agency requires facts capable of amounting to a criminal offence, as distinct from a mere disagreement over performance of the contract. Funds entrusted and then misappropriated may, depending on the evidence gathered, amount to breach of trust as defined by Article 314-1 of the French Criminal Code (Code pénal). A delay in paying over rent is therefore not enough, on its own, to establish that offence: the sums collected, the use made of the funds and the explanations received must be examined. A disputed commission or a failure in the duty to advise may, for its part, be pursued through a civil action. The firm analyses the documents available before deciding how to proceed, without systematically equating a professional breach with a criminal offence. Keep the statements, the management accounts and any requests left unanswered; they also help prepare a claim for restitution or compensation.
Can an agency claim its commission if the sale does not go through?
For sales, Article 6 of the Hoguet Act regulates the sums claimed before a transaction has actually been concluded and recorded in writing. The mandate and the parties' commitment must be examined before determining whether the remuneration has become due. Articles 72 and 73 of the Decree of 20 July 1972 also set out the requirements for the prior mandate, the fees and the person liable for them. An invoice therefore does not, on its own, show that the commission is due in the situation in dispute. This remuneration must, however, be distinguished from a claim based on an exclusivity clause, a penalty clause or a fault attributed to the principal. The law also provides a particular regime where the principal acts in the course of professional activities. The firm examines each basis relied on before contesting the claim, comparing the clauses of the mandate with the circumstances in which the sale failed.
How do you end an exclusive mandate with an estate agency?
Article 78 of the Decree of 20 July 1972 provides, for the mandates concerned, a right to terminate once three months have passed since signature. This requires giving the other party at least fifteen days' notice, by registered letter with acknowledgement of receipt. The text contains exceptions, in particular for certain sales of lots and certain transactions involving commercial premises: their application must be checked. The exclusivity clause or the penalty clause must also be express, very prominent and included in a mandate of which a copy was given to the principal. Before any termination, gather the complete contract, its date of signature and the evidence of the steps taken by the agency. The provisions on buyers introduced and on the effects of the mandate after it ends must be examined. A badly prepared termination may leave a disagreement over the commission or a contractual indemnity.
Is an estate agent liable for a failure to advise on a purchase?
Liability requires identifying the information or check that was omitted, then establishing the consequences of that failing for the purchase. Where the buyer is not the agent's principal, Article 1240 of the Civil Code may found a tort liability action against the professional. The project communicated, the advertisement, the documents available and the perceptible characteristics of the property are essential elements of the analysis. A disappointing return does not, however, show on its own a failure in the duty to advise or a compensable loss. In a buy-to-let investment case, the court held: “They thus fail to substantiate a loss of opportunity that would be linked to the purchase of another, more profitable investment.” (our translation) (CA Paris, Pôle 5 chamber 10, 23 May 2022, No. 20/18370). The firm therefore distinguishes the risk inherent in the transaction from the consequences of insufficient information, without presuming that the professional guarantees the yield announced.
What can you do if the manager stops paying over rent collected?
First distinguish the rent actually received by the agency from the sums the tenants have not paid, by reconciling the statements. Article 1993 of the Civil Code requires the agent to account for the management and for the sums received on behalf of the principal. Ask for detailed accounts, supporting documents for the deductions and payment of the balance due on the dates set by the contract. Bank statements and earlier reports make it possible to check whether fees or expenses explain a difference. The Lille judgment cited on this page distinguishes rent collected but not paid over, undue management fees and the consequences of defective recovery. These claims must not be confused, because their proof and their purpose differ. Depending on the professional's situation, the firm also examines the conditions for approaching the financial guarantor, without presuming that it will cover the loss.
Is the agency liable for unpaid rent where the Visale guarantee was not used?
Unpaid rent does not automatically make the manager liable for all the rent: its commitments and the steps it took must be examined. The mandate, the Visale file, the declarations made and the reason for refusal make it possible to identify any fault in the follow-up. In the case decided in Paris, the professional had neither taken out the insurance provided for in the mandate nor made effective use of the existing Visale guarantee. The court stated: “The company FLATLOOKER can only be ordered to compensate the losses causally linked to the faults committed.” (our translation) (TJ Paris, 5th chamber 1st section, 24 June 2025, No. 24/06464). The compensation was analysed as a loss of opportunity to benefit from the guarantee. The firm therefore checks the conditions applicable to the file concerned, without transposing a declaration period or an amount of cover to every situation.
Who bears the cost of damage when the property was entrusted to an agency?
A management mandate does not mean that the agency automatically guarantees the condition of the property when the tenant leaves. Damage attributed to the tenant must be distinguished from the consequences of a fault by the manager in carrying out its assignment. Inventories of condition, dated photographs, quotes and correspondence make it possible to establish the defects and their justified cost. The mandate then indicates which steps were entrusted to the agency, in particular for inventories of condition and the follow-up of claims. In the Paris judgment of 24 June 2025 cited on this page, the failure to take out the insurance promised also affected cover for tenant repairs. The court found a loss of opportunity, taking account of the guarantees provided for in the mandate. The firm therefore looks for the link between each expense claimed and the step omitted, without attributing all repairs indiscriminately to the professional.
Can a property finder claim a commission after the search mandate has expired?
The answer depends on the terms of the search mandate, the properties presented and the circumstances in which the purchase was finally concluded. Dealing directly with the seller after a viewing organised by the professional does not necessarily rule out any remuneration. The Court of Cassation nevertheless requires an inquiry into “whether the terms of the mandates did not limit in time” (our translation) the prohibition on dealing directly with the seller introduced (Cass. 3e civ., 11 September 2025, No. 23-17.579). This decision calls for reading the clauses that take effect after expiry, rather than inferring the commission from the introduction alone. The firm therefore compares the signed mandate, the viewing reports and the date of purchase. It also examines the remuneration terms and any faults alleged against the property finder before responding to the claim.
What is the time limit for acting in a dispute with an estate agent?
A client's liability action falls in principle under Article 2224 of the Civil Code: five years from the knowledge of the facts enabling action. The text refers to the day on which the right holder knew or should have known those facts, which calls for a precise analysis. Signature of the mandate is therefore not systematically the starting point to be used for every fault alleged. Dates of discovery, accounts received, refusals of guarantee and the agency's replies must be kept for this check. Other deadlines may arise from the contract, in particular for terminating an exclusivity or declaring an incident to a guarantee body. A simple reminder should not be regarded as automatically protecting the action against the limitation period. The firm checks separately the nature of each claim and the steps needed to preserve the client's rights.
Sources and related pages
Official texts and related pages
The sources for this page and the firm's related areas of practice.
Further reading
Page updated on 25 October 2026.
A dispute with your agency? Have the mandate and the documents reviewed.
Commission claimed, rent withheld or failure to advise: send the documents to the firm to prepare your claim. Preliminary review at €80 incl. VAT, contact on +33 6 46 60 58 22.
The latest news.
What our clients say
Best real estate law and business law lawyer in Paris. A humane and attentive lawyer, with a wonderful team. Thank you, Maître KOHEN
Translated from French
Thank you to Maître KOHEN for his analyses of recent case law on fraudulent non-disclosure in property sales. It reassures me about an action for annulment that I am considering after buying a house affected by serious defects intentionally concealed by the seller and not reported by the estate agent; also defects (rising damp) characterised by spreading through-cracks and damp stains, not reported by the estate agent… Worse, defects concealed by the latter or at his instigation, under a coat of paint and by polystyrene tiles glued to the ceiling of a bedroom. And the said estate agent drafted the preliminary contract, which of course contains no information about any of these defects. Just to add that, being 77 years old and suffering from cognitive impairment, I am certain that the estate agent thought I would not be able to discover the deception and above all to establish the fraudulent intent, still less to bring legal proceedings given the complexity and length of the procedure... That is why I am opting for the criminal route, insofar as the intentional concealment of the defects by the seller and then by the estate agent amounts to the fraudulent manoeuvres of art. 313-1 of
Translated from French
Maître Reda KOHEN assisted me in a dispute concerning a sale agreement with a defaulting party. He provided professional and responsive support, and I highly recommend him.
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I highly recommend Maître Reda Kohen. Thanks to his explanations, I was able to recover my security deposit in a situation that seemed blocked. He was responsive, clear, and very professional. A big thank you for his invaluable help!
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Excellent support from Maître Kohen in a case combining business law and real estate law. Clear legal analysis from the first meeting, right through to the hearing. Professional and accessible lawyer, I highly recommend his firm in Paris 17.
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Maître Kohen assisted me in recovering unpaid debts from a defaulting tenant. Procedure mastered from start to finish, from the payment order to eviction. Human, attentive, and always reachable. Thank you for your work.
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Translated from French
I turned to Maître Kohen for a complex real estate dispute and I highly recommend his firm. He is very professional; he thoroughly analyzed my case from the very first appointment and clearly explained the possible options. Thanks to his expertise, we achieved a very favorable outcome. Responsive, a good teacher, and committed, he is a lawyer you can truly trust. Yours faithfully, Miss Maazaz
Translated from French
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A precise and concrete analysis and an immediate response. Excellent.
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I highly recommend this lawyer for his professionalism, honesty, and transparency. He helped me successfully and guided me through the process with great care and expertise. What I particularly appreciated was his honest approach and the fact that he recommended practical, cost-effective options instead of immediately pushing for the most expensive solution. He genuinely focused on finding the right approach for my situation. I’m very grateful for his support and would definitely recommend him to anyone looking for a trustworthy and professional lawyer in France.
Thank you for this detailed, precise help, with a proposal at the end on whether or not to continue (very quick response as well)
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Translated from French
I would like to warmly thank Maître Esther Cornu for her professionalism, her availability and the quality of her support. In a case of particular importance for my professional future, she showed great responsiveness, rigour and a gift for explaining things, taking the time to answer my questions precisely and to explain the various legal steps to me. I particularly appreciate the clarity of her analyses, her seriousness and her commitment in following up my case. Many thanks to Maître Esther Cornu for listening and for her support. I highly recommend!
Translated from French
I was pleasantly surprised by the responsiveness of Mr Reda Cohen, who took the time to answer my questions about my case instantly. It has become so rare these days to find a lawyer who is so available, responsive and attentive, even when it is simply a matter of answering questions. His answers are clear, precise and reassuring. You can tell that he takes the time to understand the situation and to provide relevant answers. Beyond his excellent ratings on Google, it is above all this availability and this seriousness that make the difference. Many thanks to Mr Reda Cohen for his professionalism and his responsiveness. I highly recommend!
Translated from French
A huge thank you to Maître Esther Cornu from Kohen Avocats for her support during a particularly difficult time. Her attentiveness, empathy, and humanity touched me deeply. She was able to answer my questions with clarity and sensitivity, while demonstrating great professionalism and fully respecting the confidentiality of the case. Beyond her professional qualities, I met a deeply humane lawyer whose support made a real difference. I sincerely recommend her.
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Good experience. And good work, thank you for everything.
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Saw Hassan on the TV news
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very clear article
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