Commune · data to June 2026
House prices in Bailly (78)
Homes in Bailly (78) sold for a median €4,190 per m² in the 12 months to June 2026, down 2.8% on the year before. That is the median of 51 sales recorded in property deeds. That is higher than in 89% of communes.
- Median sale price per m²
- €4,190/m²
- Change in a year
- −2.8%
- Apartments
- €3,819/m²
- Houses
- €5,828/m²
- land included
- Sales in 12 months
- 51
Bailly (78): −10.6% in 4 years
Median sale price per m², over the 12 months to each quarter
- Bailly (78)
- Yvelines
- France
Show the numbers
| Quarter | Bailly (78) | Yvelines | France |
|---|---|---|---|
| Q2 2026 | €4,190/m² | €3,845/m² | €2,605/m² |
| Q1 2026 | €4,376/m² | €3,867/m² | €2,588/m² |
| Q4 2025 | €4,220/m² | €3,852/m² | €2,589/m² |
| Q3 2025 | €4,192/m² | €3,886/m² | €2,581/m² |
| Q2 2025 | €4,311/m² | €3,881/m² | €2,564/m² |
| Q1 2025 | €4,146/m² | €3,892/m² | €2,559/m² |
| Q4 2024 | €4,194/m² | €3,912/m² | €2,542/m² |
| Q3 2024 | €4,045/m² | €3,930/m² | €2,551/m² |
| Q2 2024 | €4,224/m² | €3,978/m² | €2,577/m² |
| Q1 2024 | €4,434/m² | €4,017/m² | €2,610/m² |
| Q4 2023 | €4,344/m² | €4,083/m² | €2,644/m² |
| Q3 2023 | €4,251/m² | €4,146/m² | €2,685/m² |
| Q2 2023 | €4,581/m² | €4,185/m² | €2,704/m² |
| Q1 2023 | €4,510/m² | €4,208/m² | €2,696/m² |
| Q4 2022 | €4,518/m² | €4,184/m² | €2,675/m² |
| Q3 2022 | €4,623/m² | €4,144/m² | €2,627/m² |
| Q2 2022 | €4,685/m² | €4,093/m² | €2,566/m² |
Reports for Bailly (78)
Each report opens the full series and the assumptions behind these figures.
At the median sale price, a 90 m² home costs €377,100. With 10% down and a 30-year mortgage, the payment is €1,468 a month. The HCSF caps it at 35% of a household's income.
- Payment, two incomes
- 20%
- Payment, one income
- 41%
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
- €1,803
- Owning per month
- €1,257
Figures for Yvelines: Bailly (78) 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
4.6% of the 1,726 homes counted in the 2023 census stood empty, whether for sale, to let or for other reasons.
- Empty, 2023 census
- 4.6%
- Empty homes
- 79
In 2025, 0% of the homes authorised were in existing buildings: conversions, extensions and changes of use.
- Homes in existing buildings, 2025
- 0%
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% |
| Bailly (78) | €4,190 | −2.8% |
| 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% |
| 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.