Valuing a property without public comparables: the method when the property was never listed
A listed property is judged by comparison: other listings, time on the market, a history of price cuts. On a confidential property none of that exists, and it is the real counterpart of off-market access. This dossier gives the replacement method, which holds without a single listing.
By Jean Mascla, founder of Home SelectUpdated · 6 min read
The counterpart of off-market access
On a publicly listed property, the price is judged by comparison: other listings, a time on market, a history of reductions. On a confidential property, none of that exists, and that is the real trade-off of off-market access.
Start from what was paid, not what is asked
Since 2019 the tax administration has published, as open data, the property value declarations database, fed by notarised deeds and updated twice a year. For each transfer for value it gives the address, the date, the price, the floor area and the type of property. It is the only public source that says what was paid.
On a property with no listing, it is read at three successive scales. The building first: a unit sold eighteen months ago on the same staircase is the strongest comparable that exists. The street next, over three years, setting aside floor areas far from the one that interests you. The district last, for the trend, never for the point.
Two limits apply and they should be known. The database covers neither Alsace-Moselle nor Mayotte, which fall under a separate land registration regime. And it ignores the property’s condition: two flats at the same address can differ by thirty per cent depending on floor level, aspect and works.
Correct the reference price with documented differences
A price per square metre drawn from the database is an average. It is corrected, and each correction should rest on a document rather than an impression.
Floor level and lift: a ground floor on the street and a fourth floor with a lift do not belong to the same market, in the same building.
Aspect and view, to be recorded on site at the time of the viewing, with the hour and orientation noted.
The energy rating: since letting the most energy-hungry ratings was banned, a poor performer carries, for its buyer, a works budget and a deadline, and that can be quantified.
Works voted at a general meeting and not yet called in, readable in the minutes the seller must hand over.
A floor area shortfall: in a co-ownership, a private area more than five per cent below the one stated opens the proportionate price-reduction claim under article 46 of the Act of 10 July 1965, for one year from the deed. Better to establish it beforehand.
Use indexes for the trend, never for the value
The quarterly indexes of the notaries and of the national statistics institute say which way the market is going, not what a property is worth. They serve one precise and useful purpose: updating an old comparable. A unit sold twenty months earlier in the same building remains the best starting point, provided it is placed within the segment’s movement since that date.
They also answer a frequent seller’s argument, that of a price fixed on the memory of a higher market. A public series puts a figure against a conviction, and that is all it is asked to do.
Beaulieu-sur-Mer, Côte d’Azur
Have it costed by those with no interest in the sale
Two third parties value without being party to the transaction, and their opinion arrives before signature.
The lender first. A bank financing an acquisition has the property valued, and it lends on the basis of its own valuation. A costing below the agreed price forces you to fill the gap with a larger deposit or to renegotiate; either way, the information is free and it arrives in time. It is often the only quantified counterweight a buyer has on a property with no comparable, and one more reason to have processed financing before the first viewing.
The property valuer next, for atypical properties: a townhouse, an open floor, a prestige property, an address with no series of comparable sales. They give a reasoned opinion of value, with their method and comparables, which can be used in a negotiation. On a standard flat in a building that has seen several recent sales, the expense is not justified.
What the absence of a comparable does not change
It changes neither the seller’s obligations nor the statutory deadlines. The technical survey file, the co-ownership documents and the ten days of withdrawal apply identically, as our page on the deadlines from offer to deed recalls. Nor does it excuse checking that the property really is off-market, which our checklist for spotting a fake off-market sets out: a property listed elsewhere for six months has, for its part, every comparable in the world.
What Home Select organises for valuing a confidential property
Home Select searches and negotiates for the buyer, and for the buyer alone. Your property finder checks the property, the building’s documents and the calendar before you commit, and flags what deserves a question to the notaire or a clause in the offer.
Around the purchase, we introduce the partners used to buyers who live abroad: bilingual notaire, mortgage broker, lawyer, sworn translator. Each acts under their own responsibility; we keep the calendar, from the offer to the handing over of the keys.
Frequently asked questions
What is the most reliable source of prices actually paid?
The property value declarations database, published as open data by the tax administration since 2019 and updated twice a year, from notarised deeds. It gives the address, the date, the price, the floor area and the type of property for each transfer for value. It covers neither Alsace-Moselle nor Mayotte, which fall under a separate land registration regime, and it says nothing about the property’s condition.
What happens if the bank values below the agreed price?
The bank lends on the basis of its own valuation, not the seller’s: the gap then has to be filled by a larger deposit, or the price renegotiated. It is valuable information, obtained free and before the deed, and it is often the only quantified counterweight a buyer has on a property with no public comparable. The mortgage condition precedent protects a buyer who fails to obtain financing.
Is an independent valuation worth the cost?
On an atypical property, a prestige property or one whose price attaches to no series, yes: a property valuer gives a reasoned opinion of value, with their method and comparables, which can be used in a negotiation and before a bank. On a standard flat in a building where several units have sold recently, the property value database is usually enough.
How do you adjust a price per square metre to a specific property?
A price per square metre drawn from the database is an average. It is corrected, and each correction should rest on a document rather than an impression.
What are the notaries’ indices for when valuing a property?
The quarterly indexes of the notaries and of the national statistics institute say which way the market is going, not what a property is worth. They serve one precise and useful purpose: updating an old comparable. A unit sold twenty months earlier in the same building remains the best starting point, provided it is placed within the segment’s movement since that date.
Does the lack of comparables change the seller’s obligations?
It changes neither the seller’s obligations nor the statutory deadlines. The technical survey file, the co-ownership documents and the ten days of withdrawal apply identically, as our page on the deadlines from offer to deed recalls. Nor does it excuse checking that the property really is off-market, which our checklist for spotting a fake off-market sets out: a property listed elsewhere for six months has, for its part, every comparable in the world.
Preparing a purchase in France from abroad, or already an owner there? Describe your situation: a Home Select property finder answers within one working day, and the file starts with the right partners, in the right order.
Your request is already sent, simply pick what suits you.
A property finder calls you back within one working day.
🇫🇷+33
An error occurred. Please try again.
Then answer 3 quick questions to be matched with the right hunter.
Home Select processes your data (name, email, phone, project) to handle your request and contact you. It is recorded in our follow-up tool and read by the hunter in charge of your project. Our technical providers access it for hosting, email and checking that your email and number are real, some of them from the United States under the safeguards set by the GDPR. We keep it for three years after our last exchange, or five years after the end of our assignment if you entrust it to us, as French anti-money-laundering law requires. To access, correct or erase it, or to object to its use: contact@home-select.fr. Details in our privacy policy.
Your hunter calls you back within one working day.
Resume your request?
You started a request recently. Pick up where you left off, or start over.
Your answers are kept for 24 hours.
What is your project?
Takes 1 minute, no commitment.
Where are you looking?
Select one or more cities or areas
Your budget?
€
You pay only when Home Select finds it.
Anything to add?
Optional. Add any useful details: specifics about your search, constraints or your availability.
This helps your hunter prepare for your call.
An expert will contact you shortly
Your brief
Confidential search: your file goes to a senior hunter.
60 rue François 1er, 75008 Paris · FCI member
FeesOne month’s rent excluding charges, plus VAT, with a minimum of €2,000 including VAT. Payable only when the lease is signed. No application fee.
Step 1 of 2 · Your search
What are you looking for?
Furnished, unfurnished or both?
In which city?
One or more cities or areas.
€ / month
Charges included, as in the listings.
You would like to move in
Two minutes, no documents needed at this stage.
FeesOne month’s rent excluding charges, plus VAT, with a minimum of €2,000 including VAT. Payable only when the lease is signed. No application fee.
Step 2 of 2 · Your situation
Your situation
These answers let Home Select tell you quickly, and frankly, whether your search can succeed on the market in your city.
You are applying
€ / month
Before tax, regular bonuses included, for everyone applying.
Main applicant’s employment
Your company is based in France
Number of annual accounts filed
To strengthen your file
Optional for your profile. A guarantee reassures landlords.
Guarantor’s situation
€ / month
Who it is for, why you are moving, what matters to you. Do not include sensitive information (health, origin, religion, family situation).
Your contact details
🇫🇷+33
Reply within 24 business hours.
Home Select processes your data (name, email, phone, project, employment, income, guarantee) to review your rental request and contact you. Your answers are compared with the criteria landlords apply, then read by Home Select’s rental hunter. A request that cannot succeed receives a written reply within 24 business hours, and you can ask for it to be reviewed again at contact@home-select.fr. Our technical providers access it for hosting, email and checking that your email and number are real, some of them from the United States under the safeguards set by the GDPR. A request that does not lead to an assignment is erased after three months; otherwise, we keep your data for three years after our last exchange, or five years after the end of our assignment if you entrust it to us, as French anti-money-laundering law requires. To access, correct or erase it, or to object to its use: contact@home-select.fr. Details in our privacy policy.
FeesOne month’s rent excluding charges, plus VAT, with a minimum of €2,000 including VAT. Payable only when the lease is signed. No application fee.
Your file
Your file matches what landlords expect
Book your meeting with Stéphane Martins, rental hunter. He confirms it after reading your file, within 24 business hours.
Choose your time slot
Times shown in Paris time.
Confirmation arrives by email and text message.
FeesOne month’s rent excluding charges, plus VAT, with a minimum of €2,000 including VAT. Payable only when the lease is signed. No application fee.
Your request
Your request is in good hands
Stéphane Martins, rental hunter, is reviewing your file and will reply within 24 business hours.
You will receive a confirmation email.
You arrived through one of Home Select’s ads or campaigns.Ad measurement.Do you agree to Home Select measuring how well it works? Home Select will know which campaign brought you here and, if you get in touch, the ad platform will only learn that its ad worked, without receiving your contact details.Do you agree to Home Select measuring how well its ads work? If you arrive through one of them, Home Select will know which one and, if you get in touch, the ad platform will only learn that its ad worked, without receiving your contact details.Learn moreYour current choice: .