In short
An offre d’achat (purchase offer) that specifies the property and the price and expresses the intention to be bound is a genuine offer within the meaning of the code civil (Civil Code, art. 1114). The buyer may withdraw it freely as long as it has not reached the seller (art. 1115), but not afterwards, before the period they set has expired or, failing that, a reasonable period (art. 1116). Service-public.gouv.fr gives a usual validity of 1 to 2 weeks. A contre-offre (counter-offer) is a new offer that makes the first one lapse (art. 1118). No payment can be demanded: it would make the commitment void (art. 1589-1). The buyer’s real safety net comes later: 10 days’ cooling-off after notification of the compromis (preliminary sale contract) (CCH, code de la construction et de l’habitation (Construction and Housing Code), art. L271-1).
What turns a letter into an offer
A contract is formed “by the meeting of an offer and an acceptance by which the parties express their will to be bound” (Civil Code, art. 1113). To be an offer, the proposal “contains the essential elements of the envisaged contract and expresses its author’s will to be bound in the event of acceptance”; otherwise, it is merely an invitation to negotiate (art. 1114).
In practice, service-public.gouv.fr describes a letter sent to the seller or the agent, by recorded delivery with acknowledgement of receipt or by email, containing at least:
- the description and floor area of the property;
- the date of the offer;
- the price offered;
- the period of validity.
The buyer may add their financing plan, a condition suspensive (condition precedent) relating to a loan or planning permission, the amount of the dépôt de garantie (deposit) planned at the compromis stage, and the desired moving-in date. They must have the legal capacity to sign the future deed; otherwise, the offer is not valid (service-public.gouv.fr). Making a written offer is not compulsory.
Validity period and withdrawing the offer
The Civil Code distinguishes two moments:
- Before receipt by the seller, the offer “may be freely withdrawn” (art. 1115).
- After receipt, it “may not be withdrawn before the expiry of the period set by its author or, failing that, the end of a reasonable period” (art. 1116). A wrongful withdrawal “prevents the contract from being concluded” but makes its author liable.
When that period expires, the offer is caduque (lapsed) (art. 1117). Service-public.gouv.fr states that the period of validity is “generally a few days (1 to 2 weeks)” and that, where no period is given, it will be set by the judge in the event of a dispute. Hence the value of writing down a precise date.
The seller’s reply: accept, counter or stay silent
While the offer is valid, the seller has three options, according to service-public.gouv.fr:
| Reply | Effect |
|---|---|
| Acceptance (“bon pour accord” (agreed) and signature) | The seller commits to sell and must stop viewings |
| Written counter-proposal | New offer; the original offer lapses |
| Silence | The offer lapses when its period ends |
The Civil Code puts it this way: “an acceptance that does not conform to the offer has no effect, except as a new offer” (art. 1118). A counter-offer therefore reverses the roles: it is now the buyer who can accept or refuse it. Silence “does not amount to acceptance” (art. 1120), and the contract is concluded “as soon as the acceptance reaches the offeror” (art. 1121).
Once agreement is reached, the sale is “complete between the parties” as soon as they have agreed “on the thing and the price” (art. 1583). If the seller then refuses to sell, the buyer can ask the court to enforce the sale, and claim damages (service-public.gouv.fr).
No payment with the offer
Service-public.gouv.fr is categorical: it is forbidden to pay an acompte (down payment) to the seller, and a payment makes the offer void. The Civil Code declares void “any unilateral undertaking entered into with a view to acquiring a property or a right in property for which a payment is demanded from or received from the person giving the undertaking, whatever its cause and form” (art. 1589-1).
Money comes in at the preliminary-contract stage. In a compromis, a deposit is common; service-public.gouv.fr puts it at 10% of the price, held in the notaire’s (notary’s) escrow account. In a promesse unilatérale (unilateral promise to sell), the indemnité d’immobilisation (option fee) is in practice between 5% and 10% of the price, and becomes compulsory, at a minimum of 5%, if the promise runs for more than 18 months (service-public.gouv.fr).
After agreement: the 10-day cooling-off period
Acceptance of the offer does not deprive a private buyer of their protection. For the purchase of a building for residential use, a non-professional buyer “may withdraw within ten days from the day after the first presentation of the letter notifying them of the deed” (CCH, art. L271-1). This period runs from notification of the preliminary contract, not of the offer (service-public.gouv.fr).
During this period no payment may be received, with some exceptions; if the buyer withdraws, the professional holding the funds returns them within 21 days, and breaching these rules is punishable by a fine of €30,000 (CCH, art. L271-2). The seller has no cooling-off period: once the offer is accepted, they must sell the property (service-public.gouv.fr).
FAQ
Is a verbal offer valid?
The Civil Code does not require an offer to be in writing (art. 1113 and 1114), but service-public.gouv.fr describes a dated letter specifying the property, floor area, price and period of validity. The written form mainly serves as evidence, particularly of the deadline.
Can I withdraw my offer after sending it?
Yes, as long as it has not reached the seller (art. 1115). After that, not before the end of the period set or of a reasonable period (art. 1116).
How long is a purchase offer valid?
For the period the buyer sets; service-public.gouv.fr indicates generally 1 to 2 weeks. If no period is set, a reasonable period applies (art. 1116 and 1117).
Does the seller’s counter-offer bind me?
No. It is a new offer (art. 1118) that you are free to accept or not. Your original offer lapses (service-public.gouv.fr).
Do I have to pay money with the offer?
No. A payment demanded or received makes the commitment void (art. 1589-1). Funds are paid at the compromis or promise stage, usually into the notary’s escrow account (service-public.gouv.fr).
Which professional to consult
The agent immobilier (estate agent) passes on the offer and the seller’s reply. The courtier en crédit (mortgage broker) helps cost the financing plan attached to the offer and the loan condition precedent. The notaire (notary) then drafts the compromis or the promise, and holds the funds in escrow. The diagnostiqueur (property surveyor) produces the survey file attached to the preliminary contract.
Find a professional
One professional per trade and per area, selected and scored out of 100 from public data, with a verifiable title. The trade, its official register and the professionals selected (pages in French):
The real estate agent selected in the largest cities
| City | Professional | Area | Score /100 | Status |
|---|---|---|---|---|
| Paris | Laforêt Paris 15 Vaugirard | Paris, 15e arrondissement | 89 | Selected |
| Marseille | ERA Agence de la Bastide | Marseille, 13e arrondissement | 90 | Selected |
| Toulouse | Nestenn By Solvimo | Toulouse | 84 | Selected |
| Nice | Immo Gambetta | Nice | 71 | Selected |
| Lyon | Orpi Duguesclin Transactions | Lyon, 6e arrondissement | 89 | Selected |
| Montpellier | Immo Angels | Montpellier | 80 | Selected |
| Bordeaux | Human Immobilier Bordeaux Chartrons | Bordeaux | 90 | Selected |
| Lille | Orpi Lille République Beaux-Arts | Lille | 92 | Selected |
| Rennes | Nestenn Rennes Centre | Rennes | 80 | Selected |
| Toulon | iBox Immobilier Toulon Jaurès | Toulon | 84 | Selected |
The 10 cities with the most sales (DVF 2025) where a real estate agent is selected; in a city with several areas, the best-scoring profile. "Verified": title read at the register by Payotte; "Selected": title declared, verifiable on the profile.
Related guides
Sources
- Qu'est-ce qu'une offre d'achat d'un bien immobilier ? (service-public.gouv.fr, vérifié le 23 mai 2025) (checked 11 October 2026)
- Code civil, articles 1113 à 1122 – offre et acceptation (Légifrance) (checked 11 October 2026)
- Code civil, article 1583 – en vigueur depuis le 21 mars 1804 (Légifrance) (checked 11 October 2026)
- Code civil, article 1589-1 – en vigueur depuis le 1er juin 2001 (Légifrance) (checked 11 October 2026)
- Code de la construction et de l'habitation, articles L271-1 à L271-3 (Légifrance) (checked 11 October 2026)
- Promesse de vente d'un logement existant : promesse unilatérale ou compromis (service-public.gouv.fr, vérifié le 10 avril 2026) (checked 11 October 2026)
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