Property valuation
Property valuation in Boulogne-Billancourt: your home’s value within 48 hours
Why PNW Partners
Boulogne-Billancourt is one of the most liquid markets in Western Paris, and one of the most demanding: between Prince-Marmottan, the town centre and the Trapèze, the price per m² varies by nearly €1,900 depending on the area. A fair valuation is the first step to sell at the right price, or to decide between selling and letting.
PNW Partners values your property free of charge and in complete confidence, with a reasoned reply within 48 h. We come to Boulogne-Billancourt to visit your property and advise you between a fast, discreet sale and a letting optimised for yield.
How we value your property in Boulogne-Billancourt
01
Comparative analysis
We compare sales completed over the last 6 months on your street and in your area.
02
Property visit
Floor level, aspect, condition, service charges, finishes: we come to Boulogne to refine the value.
03
DPE impact
The energy rating weighs on value: we measure its effect and target the works that matter.
04
Rental potential
We cross-check the sale value with the possible rental income: company lease, furnished, mobility lease or Loi 1989.
05
Reply within 48 h
You receive a reasoned value and a recommendation: sell, let or wait.
Property prices in Boulogne-Billancourt: key figures
A few benchmarks to place your property. These are averages: the actual value depends on the address, floor level, condition and energy rating.
≈ €8,370/m²
Average sale price, apartments
≈ +1.2%
Price change over 1 year
≈ –11.2%
Price change over 5 years
≈ €31.3/m²
Average asking rent, all types
Average price per m² by area (apartments)
| Princes-Marmottan | ≈ €8,670 – €9,100 |
| Route de la Reine | ≈ €8,165 – €9,025 |
| Centre-ville | ≈ €7,900 – €8,690 |
| Trapèze | ≈ €7,340 – €8,805 |
| Édouard-Vaillant | ≈ €7,560 – €8,360 |
| Mail Maréchal Juin | ≈ €7,195 – €7,775 |
Prices are edging up over one year and remain below their level of five years ago, with clear gaps between areas: proximity to the Bois de Boulogne, the Seine or the metro, floor level and energy performance matter as much as the address.
Order of magnitude: a 60 m² apartment falls, on these averages, between ≈ €430,000 and ≈ €545,000 depending on the area. Only a personalised valuation takes your property into account.
Indicative averages, excluding extras and fees.
Prince-Marmottan, Silly-Gallieni, Trapèze: where is your property?
Prince-Marmottan and Parchamp–Albert-Kahn
The most prestigious area, at the gates of the Bois de Boulogne and the Albert-Kahn gardens: from €8,670 to €9,100/m² in Princes-Marmottan.
Town centre, Silly-Gallieni and Reine-Mairie
The town hall, rue de Silly, the shops and the grand residential buildings: a town centre very popular with families, from €7,900 to €8,690/m² in the centre.
Vaillant-Sembat and Jean-Jaurès
The bustle of Marcel Sembat and boulevard Jean-Jaurès, direct links to Paris and a mix of buildings: from €7,560 to €8,360/m² in Édouard-Vaillant.
Trapèze, Billancourt and Pont de Sèvres
The recent developments of the Trapèze and the Seine banks, the Île Seguin and its cultural venues: from €7,340 to €8,805/m² in the Trapèze.
Transport
Line 9: Marcel Sembat, Billancourt, Pont de Sèvres · Line 10: Boulogne–Jean Jaurès, Boulogne–Pont de Saint-Cloud · Many bus lines to Paris, Issy-les-Moulineaux and Sèvres.
What makes your apartment’s value vary
Energy performance (DPE): a value criterion
Properties rated G have been banned from letting since 1 January 2025, F-rated ones will be in 2028 and E-rated in 2034. For a seller, the energy rating affects how attractive the property is, especially to investors. Our partner assessor analyses the property and targets the works that matter.
Check my DPESell or let: compare before you decide
Selling is not always the best option. We compare the net proceeds of a sale with the rental income you could expect (furnished, company lease, mobility lease or Loi 1989) and present each scenario.
Boulogne-Billancourt is not subject to the reference rents in force in Paris, but it is a high-demand rental zone (zone tendue): on re-letting, the rent is capped relative to the previous tenant’s rent. Estimate my rent →
Frequently asked questions — valuation in Boulogne-Billancourt
How is the value of my apartment in Boulogne-Billancourt estimated?
We compare sales completed in recent months on your street and in your area, then factor in floor level, aspect, condition, service charges, DPE and finishes. We visit the property in Boulogne to refine the value and send you a reasoned valuation within 48 h.
Is the valuation free and confidential?
Yes. The valuation is free, confidential and without obligation. You receive a reasoned reply within 48 h of your request.
What is the price per m² in Boulogne-Billancourt?
In 2026, apartments in Boulogne-Billancourt sell for around €8,370/m² on average, up about 1.2% over one year and down about 11.2% over five years. By area, expect roughly €8,670 to €9,100/m² in Princes-Marmottan, €8,165 to €9,025 in Route de la Reine, €7,340 to €8,805 in the Trapèze, €7,900 to €8,690 in the town centre, €7,560 to €8,360 in Édouard-Vaillant and €7,195 to €7,775 around the Mail Maréchal Juin.
Which criteria make an apartment’s value vary?
The address and quality of the building, floor level and aspect, outdoor space, general condition and works required, service charges, the energy rating (DPE) and the letting status of the property (vacant or occupied).
Does the DPE affect the sale price in Boulogne?
Yes. Properties rated G have been banned from letting since 1 January 2025, F-rated ones will be in 2028 and E-rated in 2034, so the energy rating affects how attractive a property is, particularly to investors. We factor it into the valuation and can have the property assessed by our partner diagnostician.
Is it better to sell or let my property in Boulogne?
It depends on your goal (liquidity, income, succession) and your tax position. We compare the net proceeds of a sale with the rental income you could expect (furnished, company lease, mobility lease or Loi 1989). Boulogne-Billancourt is not subject to the reference rents in force in Paris, but it is a high-demand rental zone (zone tendue): on re-letting, the rent is capped relative to the previous tenant’s rent. For the tax side, we recommend validating your choice with your notary or accountant.
Why a valuation by an agency rather than an online estimator?
Online estimators rely on averages: they cannot see your building’s floor level, condition, service charges or DPE. They give an order of magnitude. A valuation by a professional who visits the property is more accurate. You can also start with our online valuation tool, which we then refine.
Can I sell my property discreetly?
Yes. Our valuation is confidential and, thanks to our access to the off-market segment, we can present your property to buyers before any public listing, if you wish.
Where is the agency, and do you travel to Boulogne?
Our agency is at 29 avenue Trudaine, 75009 Paris. We travel to Boulogne to visit and value your property, and we welcome you at the agency with or without an appointment Monday to Friday, 9:30am–12pm and 2pm–6pm, or by phone on +33 7 43 59 45 45.
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"Excellente expérience avec cette agence pour la location de notre appartement. Un grand merci à l'équipe, toujours disponible et réactif, chose rare dans l'immobilier ! Ils ont répondu à tous nos appels et messages, et ont suivi notre dossier de A à Z jusqu'à son acceptation par le propriétaire. Un accompagnement sérieux et humain. Je recommande vivement."
Julien Ranquere"Très bonne expérience, l'agent s'est montré disponible, à l'écoute et rassurant. Nous avons été tout le long bien tenu au courant des évènements de la première prise de contact jusqu'à la remise des clés."
Damien Fouquet"Merci beaucoup pour l'accompagnement ! Une équipe à l'écoute et super réactive. Ça rassure vraiment !"
Jo MuradReviews published on Google, shown in their original language