Commune · data to June 2026
House prices in Triel-sur-Seine
Homes in Triel-sur-Seine sold for a median €3,269 per m² in the 12 months to June 2026, down 3.0% on the year before. That is the median of 154 sales recorded in property deeds. That is higher than in 74% of communes.
- Median sale price per m²
- €3,269/m²
- Change in a year
- −3.0%
- Apartments
- €3,153/m²
- Houses
- €3,323/m²
- land included
- Sales in 12 months
- 154
Triel-sur-Seine: −11.1% in 4 years
Median sale price per m², over the 12 months to each quarter
- Triel-sur-Seine
- Yvelines
- France
Show the numbers
| Quarter | Triel-sur-Seine | Yvelines | France |
|---|---|---|---|
| Q2 2026 | €3,269/m² | €3,845/m² | €2,605/m² |
| Q1 2026 | €3,293/m² | €3,867/m² | €2,588/m² |
| Q4 2025 | €3,333/m² | €3,852/m² | €2,589/m² |
| Q3 2025 | €3,351/m² | €3,886/m² | €2,581/m² |
| Q2 2025 | €3,369/m² | €3,881/m² | €2,564/m² |
| Q1 2025 | €3,369/m² | €3,892/m² | €2,559/m² |
| Q4 2024 | €3,369/m² | €3,912/m² | €2,542/m² |
| Q3 2024 | €3,414/m² | €3,930/m² | €2,551/m² |
| Q2 2024 | €3,495/m² | €3,978/m² | €2,577/m² |
| Q1 2024 | €3,705/m² | €4,017/m² | €2,610/m² |
| Q4 2023 | €3,767/m² | €4,083/m² | €2,644/m² |
| Q3 2023 | €3,767/m² | €4,146/m² | €2,685/m² |
| Q2 2023 | €3,695/m² | €4,185/m² | €2,704/m² |
| Q1 2023 | €3,650/m² | €4,208/m² | €2,696/m² |
| Q4 2022 | €3,625/m² | €4,184/m² | €2,675/m² |
| Q3 2022 | €3,655/m² | €4,144/m² | €2,627/m² |
| Q2 2022 | €3,679/m² | €4,093/m² | €2,566/m² |
Reports for Triel-sur-Seine
Each report opens the full series and the assumptions behind these figures.
At the median sale price, a 90 m² home costs €294,210. With 10% down and a 30-year mortgage, the payment is €1,145 a month. The HCSF caps it at 35% of a household's income.
- Payment, two incomes
- 21%
- Payment, one income
- 42%
Owning a 90 m² apartment costs less each month than renting it. Owning counts interest, running costs and the return the deposit could earn, at apartments' median sale price; rent is the asking rent. Repaying the loan is saving, so it is left out.
- Rent per month
- €1,582
- Owning per month
- €1,038
Figures for Yvelines: Triel-sur-Seine has no reliable figures of its own.
12.7% fewer homes were licensed for construction in the last 12 months than in an average year of the past decade.
- Licensed, 12 months
- 7,492
In 2022 the population fell by 180 while 16 homes were started.
- Homes started, 2022
- 16
- Population change, 2022
- −180
6.2% of the 5,444 homes counted in the 2023 census stood empty, whether for sale, to let or for other reasons.
- Empty, 2023 census
- 6.2%
- Empty homes
- 340
In 2025, 15% of the homes authorised were in existing buildings: conversions, extensions and changes of use.
- Homes in existing buildings, 2025
- 15%
Other communes in Yvelines
| Commune | Median sale price per m² | In a year |
|---|---|---|
| Saint-Germain-en-Laye | €6,613 | +2.3% |
| Versailles | €6,562 | −1.2% |
| Le Vésinet | €6,055 | −2.5% |
| Viroflay | €5,828 | +2.1% |
| Maisons-Laffitte | €5,678 | −3.1% |
| Le Chesnay-Rocquencourt | €5,462 | +0.5% |
| Chatou | €5,354 | +9.1% |
| Montesson | €4,886 | +4.2% |
| Houilles | €4,865 | −0.9% |
| Saint-Cyr-l'École | €4,602 | −1.8% |
| Le Pecq | €4,442 | −1.7% |
| Sartrouville | €4,263 | −3.7% |
| La Celle-Saint-Cloud | €4,077 | −3.3% |
| Marly-le-Roi | €3,935 | +1.1% |
| Conflans-Sainte-Honorine | €3,882 | +6.1% |
| Guyancourt | €3,848 | +2.8% |
| Rambouillet | €3,846 | +3.9% |
| Poissy | €3,841 | +3.0% |
| Montigny-le-Bretonneux | €3,829 | −4.3% |
| Verneuil-sur-Seine | €3,620 | +2.0% |
| Carrières-sous-Poissy | €3,600 | −3.6% |
| Bois-d'Arcy (78) | €3,444 | +1.8% |
| Les Clayes-sous-Bois | €3,406 | −0.7% |
| Triel-sur-Seine | €3,269 | −3.0% |
| Plaisir | €3,250 | +0.3% |
| Maurepas (78) | €3,004 | −0.7% |
| Élancourt | €2,996 | +4.7% |
| Trappes | €2,756 | −4.6% |
| Mantes-la-Ville | €2,559 | +0.6% |
| Mantes-la-Jolie | €2,500 | −0.9% |
| Les Mureaux | €2,438 | +4.8% |
The 31 with the most sales, of 90 with a published median.