— ile-de-france · 95
Real estate prices in Osny — investor simulator — July 2026
Median price per m² in Osny
3 342 €/m²
- Dept. 95 rank No. 108 / 160
- 5-year trend -9,8 %
Half of sales between 2 904 €/m² and 4 023 €/m² (479 DVF sales).
DVF — DGFiP · median over 258 sales (2025)
Real estate market in Osny
In Osny, the price/sqm is around 3 342 € (-9,8 % over 5 years), a balanced market for investors (grade C/5).
What investor yield in Osny?
Indicative calculation. Excludes taxes, notary fees, vacancy and works. 5-year attractivity index crosses DVF + INSEE demography + Sit@del permits + Filocom vacancy.
Net annual yield
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5-year attractivity index: C (53/100)
— Read more
Understanding the Osny real estate market
Marge de négociation à Osny
À Osny, la marge de négociation liée au marché est de 0,5 % à 1 % — PFAS dans l'eau 0,037 µg/L (nettement au-dessus de la médiane nationale), nitrates dans l'eau 29 mg/L (nettement au-dessus de la médiane nationale), atteintes enregistrées 61 pour 1000 hab (nettement au-dessus de la médiane nationale).
Mais la décote se joue surtout bien par bien : un logement classé F ou G (passoire énergétique) se négocie -5 à -10 % de plus (décote énergétique, source ADEME) — 6,1 % des logements le sont ici ; un bien A-D performant part, lui, du prix du marché.
Un conseiller immobilier peut vous accompagner sur cette négociation →Range: half of sales between 2 904 €/m² and 4 023 €/m² (across 479 DVF sales, 3 years).
Price per m² by neighbourhood — Osny
| Neighbourhood | Median DVF price |
|---|---|
| Le Poirier Didier | 3 596 €/m² |
| La Muette | 3 515 €/m² |
| Sur Le Moulinard | 3 507 €/m² |
| La Chevaurue | 3 507 €/m² |
| Résidence du Vauvarois | 3 507 €/m² |
| Le Moulinard | 3 500 €/m² |
| La Renardière | 3 500 €/m² |
| Le Fer à Cheval | 3 500 €/m² |
| La Bruyére | 3 500 €/m² |
| Les Noirs Marais | 3 500 €/m² |
| Le Chemin de Génicourt | 3 500 €/m² |
| Le Village | 3 500 €/m² |
| Résidence du Moulin Vert | 3 500 €/m² |
| Le Bas d'Osny | 3 500 €/m² |
| Lameth | 3 491 €/m² |
| Le Buisson Simonet | 3 490 €/m² |
| La Groue | 3 490 €/m² |
| Le Buisson Simonet Est | 3 412 €/m² |
| La Côte de la Ravinière | 3 412 €/m² |
| La Colline de la Ravinière | 3 412 €/m² |
| Le Parquet | 3 343 €/m² |
| Le Plateau de la Ravinière | 3 343 €/m² |
| Les Terrasses de la Ravinière | 3 343 €/m² |
| Les Versants de la Ravinière | 3 343 €/m² |
Median DVF (DGFiP) per neighbourhood, across 33 neighbourhoods.
This market is defined above all by a marked price decline (-9,8 % over 5y).
This median price, based on DVF transactions over the last 5 years (DGFiP Etalab), places Osny within the ile-de-france regional market. On the rental side, the ANIL median apartment rent there is 18,1 €/sqm/month, an indicative gross yield of 6,5 % before taxes, fees and vacancy.
The town is in strong demographic growth over 5 years (2,4 %), with construction activity low (little new construction, tight market on existing stock). Housing vacancy is low (tight rental market, secure rents). These three factors crossed with the recent price trend (-9,8 % over 5 years) determine the attractivity grade C shown above.
Note: DVF covers registered transactions excluding non-finalised off-plan sales, and ANIL publishes medians (not averages — the rent distribution is pulled up by exceptional properties). For a fine analysis at the exact address, use the simulator above or the town's full profile.
Sources: DVF (DGFiP Etalab) — rolling 5-year medians, ANIL — rent map, INSEE pop_evol — 5-year demographics, Sit@del — 24-month building permits, Filocom (DGFiP / SDES) — housing vacancy. The attractivity grade and 5-year capital gain are NTYP estimates (proprietary weighting of the data above, independent of any affiliation) — see our methodology.
— Live calculations
Every dimension, in euros.
On this page, 6 calculations with the real figures for Osny: whether to buy or rent, how much to negotiate, the monthly mortgage payment, the net rental yield, the monthly cashflow and the energy bill.
Method and assumptions detailed in Transparency.
— Your questions
Frequently asked questions
Are the prices/sqm in Osny expensive?
The median DVF price is 3 342 €/sqm. For a 60 sqm apartment, that is around 200 542 € excluding acquisition fees (count +7 to 8 % notary fees in the existing market).
What rental yield can I expect in Osny?
The indicative gross yield is 6,5 % (median rent 18,1 €/sqm/month × 12 ÷ median price 3 342 €/sqm). The net yield after charges, property tax, vacancy and taxes is generally 30 to 45 % lower. Use the simulator above to personalise it to your case.
What does the C 5-year attractivity grade mean concretely?
The index crosses 4 factors over the last 5 years: DVF price trend, INSEE demographic trend, Sit@del building permits and Filocom vacancy. C corresponds to a balanced market with no strong signal. To study depending on the exact location. The full method is documented in the Methodology section.
Can future prices be predicted from the last 5 years?
Not reliably. The past price change (shown above, DVF source) describes the recent market — it does not foretell the future. Property markets tend to revert to their mean: a town that rose or fell sharply does not mechanically keep going the same way, and rates, the wider economy or a local shock weigh more than any extrapolation. That is why we show the observed change and the real drivers (demographics, vacancy, building permits) rather than a speculative future capital gain.
Is it better to buy an apartment or a house in Osny?
The median apartment price/sqm in Osny is typically 5 % above the house price/sqm (houses offer more usable surface but a lower €/sqm ratio thanks to the land share). For a rental investment, the apartment generally offers a better yield (more tenants, simpler management, lower urban vacancy). The house is rather preferable for a family primary residence or a heritage project with valuable land.
Is it better to buy or rent in Osny?
It depends how long you keep the home. In Osny, a 60 sqm flat costs about €200 542 to buy and €1 085 a month to rent, a rent-to-price ratio of 6,5 % gross per year. That ratio decides, not the price level.
Buying adds costs renting never pays — transfer duties, notary fees, property tax, maintenance — which must be recouped first. The “Buy or rent” calculator on this page works out the year the balance tips.