What the search mandate changes
A mandat de recherche (a buyer's search mandate) reverses the buyer's position. Instead of reacting to listed properties, the buyer entrusts a professional with the task of qualifying a requirement, approaching a market and presenting analysed files. The difference lies in the quality of the information available to the person who decides.
The context makes the exercise worthwhile. The French market for older housing has regained volume, with 949,000 transactions on a rolling twelve-month basis at the end of May 2026, up 5.7% year on year, but on 17 June 2026 the FNAIM forecast between 900,000 and 920,000 sales for 2026 as a whole, a decline of 5% to 6%. The market reached a low point in 2024 and volumes remain below pre-2022 levels.
The top end of the market follows a different arithmetic. Paris records around 2,800 transactions a year above €1 million, of which 800 to 900 are above €2 million, with international clients accounting for around 60% of the luxury segment. With a few hundred sales a year, the difficulty is not searching, it is being informed early.
The legal framework, often poorly understood
The search mandate is subject to the same rules as the sale mandate: the loi Hoguet (the French law governing estate agents), a professional licence (carte professionnelle) endorsed for transactions, a financial guarantee where funds are held, and a mandatory written mandate entered in the register of mandates. A professional who searches without a written mandate cannot claim any remuneration.
Three clauses deserve a line-by-line reading. The term and the conditions for termination, since a tacitly renewed mandate locks the buyer in. The event that triggers remuneration: fees due on signature of the acte authentique (the final deed of sale executed before the notaire), an amount fixed in advance, and the treatment of properties found by the buyer directly. Finally, the scope, defined by area, property type and budget, failing which any acquisition made during the period could be attributed to the mandate.
One situation calls for particular vigilance: where the same firm represents both the seller and the buyer on the same property. It is common in a narrow market and it is not unlawful, but it must be disclosed to both parties in writing, before any negotiation, together with its consequences for the defence of each party's interests.
The brief: what it must decide
A useful brief does not describe an ideal, it sets priorities. It distinguishes deal-breaking criteria, which justify an immediate refusal, from preferences, which can be offset by price. Floor level, lift, aspect, quietness, number of bedrooms, condition, parking: each item is placed in one category or the other, failing which the selection simply reproduces the market's listings.
The budget is expressed on an all-in basis. The Finance Act for 2025 allows departmental councils (conseils départementaux) to raise the rate of droits de mutation (transfer duties) from 4.50% to 5.00%, from 1 April 2025 to 30 April 2028, and as at 1 June 2026 almost all départements apply this ceiling, including Paris and the whole of Île-de-France; only first-time buyers acquiring their main residence are excluded from the increase. As these duties represent around 70% of frais de notaire (the acquisition costs collected by the notaire, the French public notary), acquisition costs range from 7% to 8% of the price where the rate has remained at 4.50% and up to around 8.5% elsewhere. On an illustrative calculation for a €2,000,000 acquisition, total costs approach €170,000, an amount that belongs in the brief.
The holding structure belongs in the brief, not in the final phase. The impôt sur la fortune immobilière (IFI, the French real-estate wealth tax) applies from €1.3 million of net taxable real-estate assets on 1 January, and the 30% allowance on the main residence does not apply when the home is held through a société civile immobilière (SCI, a French property-holding company) in which the household lives. Settling this point before viewings avoids discovering, at the time of the offer, that the structure costs more than it saves.
Off-market, without the myth
Access to unlisted properties is the main argument for a search mandate. It is real, provided its nature is described accurately. An off-market property is most often one whose owner would sell on certain terms without having launched a marketing process, a property withdrawn from the market after a failed sale, or a property entrusted to a small circle for the sake of discretion.
What it offers: time to analyse, no immediate bidding war, a direct relationship with a seller who is not yet under pressure. What it costs: few recent comparables, a price expectation often formed outside the market, and an information asymmetry in the seller's favour. Off-market is not a source of low prices; it is early access, and its value depends on the analysis that accompanies it.
Analysing the value, not the listing
The decisive work consists in placing each property in its market tier. In Paris, the €3 million to €5 million bracket averages around €19,200/m² and the segment above €5 million around €27,500/m². The top end of the 16th arrondissement stands at around €16,300/m² in July 2026, Parc Monceau between €15,000 and €22,000/m², the Triangle d'Or of the 8th arrondissement regularly above €25,000/m², and hôtels particuliers (private town mansions) between €22,000 and €40,000/m². These benchmarks are compared with the Paris median price of €9,580/m² in the first quarter of 2026 to measure the premium paid.
For a second home, the logic differs. The regional median price on the Côte d'Azur stands at around €4,350/m² in 2026, down 1% year on year but up 25% over five years. Saint-Jean-Cap-Ferrat stands at around €18,240/m² as at 1 September 2026, with sea views starting at around €15,000/m². More than 90% of properties there are sold as second homes, with an average transaction value above €2.5 million, and more than 70% of buyers on the Côte d'Azur are foreign. Several transactions above €60 million were recorded in 2025.
Each file presented to the buyer contains the same elements, gathered before the viewing.
- Comparable signed sales, with date, floor area, floor level and condition.
- The minutes of the last three general meetings of the co-ownership, the service charges, the works voted and the multi-year works plan.
- The technical diagnostic file (dossier de diagnostic technique), the energy rating and its date, and the energy audit where it is required.
- An estimate of works for the programme envisaged, distinguishing the private lot from the common parts.
- The full budget, including the transfer duties and acquisition costs of the département.
Negotiating and securing the purchase
A buyer-side negotiation rests on verifiable points: how long the property has been on the market, the history of price reductions, works costed by quotes, and the seller's timing constraints. The energy rating enters the discussion when the property is intended for letting, the ban applying to class G since 1 January 2025, to class F from 1 January 2028 and to class E from 1 January 2034 in metropolitan France.
Securing the purchase is a matter of drafting. The offer states its period of validity, the intended financing and the conditions suspensives (conditions precedent) required. The promesse de vente (the preliminary sale agreement) opens a ten-day cooling-off period for a non-professional buyer and is accompanied by the technical diagnostic file. The mortgage condition precedent is drafted with an amount, a term and a maximum rate consistent with the market of September 2026, when the average 20-year rate stands at 3.35%. The notaire checks the title, the easements and the droit de préemption urbain (the municipal right of pre-emption).
For a non-resident buyer, the purchase is unrestricted, requires no prior authorisation and must be completed through a notaire. French-source rental income (revenus fonciers) is taxed at the progressive scale with a minimum tax rate of 20%, plus social charges (prélèvements sociaux), the latter being reduced to the solidarity levy alone at 7.5% instead of 17.2% for persons affiliated to a compulsory social security scheme of the European Economic Area, Switzerland or the United Kingdom.
Our conclusions
A search mandate is judged on two criteria, not on the length of the list sent. The first is the rate of refusal the agent is prepared to own: an agency that presents everything filters nothing. The second is the quality of the file accompanying each property, since it is this file that makes it possible to decide within a few days when the market demands it.
The economic case is measured on the total, never on the fee line alone. Acquisition costs reach up to around 8.5% of the price in the départements that have moved to 5.00%, and the 10-year OAT (French government bond) passed 4% in September 2026. A pricing error or an overlooked item of works weighs more than an intermediary's fee.
A final caveat. An agent replaces neither the notaire, who secures the deed, nor the tax lawyer, who validates the holding structure and, for a non-resident, the applicable tax treaty, nor the architect, who assesses the feasibility of the works. The agent's role is to gather information at the right time and to say what it does not know.
