Price of a 3-room apartment (T3) in Rosny-sur-Seine
In Rosny-sur-Seine, the median price of a T3 is €2,081/sq.m, i.e. about €129,022 for an average area of 62 sq.m. Data from actual DVF transactions by the DGFiP (2 sales over the 12 months ending 31 December 2025).
Price range (T3)
What DVF sales say about the price of a T3 in Rosny-sur-Seine
Of the 3 property types measured in Rosny-sur-Seine, the T3 ranks 3rd by price per sq.m and 3rd by number of sales over 12 months. This property type takes about 3% of local activity, 2 of the 59 apartment and house sales counted over twelve months. The median price, €2,081/sq.m, falls in the lower third of the town's apartment price range, from the 1st to the 3rd quartile. Apartments sold in the town average 52 sq.m, against 62 sq.m for the T3, about 18% more. Among the neighbouring towns tracked by Briveo that measure the same property type, Versailles comes out at €6,471/sq.m, about 211% above.
Observed sale prices of a T3 in Rosny-sur-Seine
Of the sales of a T3 à Rosny-sur-Seine, half closed between 121,875 € and 161,000 €, for a median price of 129,500 €.
Half of the T3 sold measure between 60 and 62 sq.m.
Three years of sales
| Year | Sales | Median per sq.m |
|---|---|---|
| 2023 | 9 | €2,081/sq.m |
| 2024 | 4 | €1,992/sq.m |
| 2025 | 2 | €2,492/sq.m |
Source and method
- Property transfer records (DVF), published by the French tax authority (DGFiP)
- Sales recorded from 1 January 2023 to 31 December 2025
- Based on 2 sales
- Figures computed on 29 October 2026
The town
Rosny-sur-Seine covers 19.4 km², lies between 17 and 144 m above sea level and had 7,328 inhabitants in the 2023 census.
Rosny-sur-Seine [ʁonisyʁsɛn] is a French commune situated in the département of Yvelines, in the Île-de-France region, just to the west of Mantes-la-Jolie, the two communes sharing a border. This small town, situated in a bend of the Seine, is historically the pays de Sully. The commune has been twinned with Lustadt (Germany) since April 1981.
The full property page of the town
From Wikidata and the Wikipedia article « Rosny-sur-Seine », licensed CC BY-SA 4.0, read on 29 October 2026. Translated from the French article. Read the article
Other property types in Rosny-sur-Seine
Price of a T3 in nearby cities
Cities tracked by BRIVEO in the same department, median for the same property type when available.
Frequently asked questions, T3 in Rosny-sur-Seine
Q1What is the price of a T3 in Rosny-sur-Seine in 2026?
In Rosny-sur-Seine, the median price of a T3 is €2,081/sq.m, with a range of €1,972 to €2,326/sq.m (1st to 3rd quartile), based on DVF sales published by the DGFiP.
Q2What budget for a T3 of 62 sq.m in Rosny-sur-Seine?
For the average observed area (62 sq.m), the indicative budget goes from about €122,264 (1st quartile) to €144,212 (3rd quartile), around €129,022 at the median price. Indicative calculation, DVF price per sq.m multiplied by the area, excluding notary fees.
Q3How does the price of a T3 compare with apartments in Rosny-sur-Seine?
The median price of a T3 in Rosny-sur-Seine is about 8% below the city's apartment median (€2,256/sq.m), based on DVF sales published by the DGFiP.
Q4How many T3 sales in Rosny-sur-Seine?
The DGFiP DVF database records 2 sales of this type in Rosny-sur-Seine over the last 12 months.