Jouars-Pontchartrain · report
Renovation in Jouars-Pontchartrain
In 2025, 72% of the homes authorised were in existing buildings: conversions, extensions and changes of use.
- Homes in existing buildings, 2025
- 72%
Homes authorised in Jouars-Pontchartrain: new buildings and existing ones
Dwellings authorised each year, by the year the permit was granted: in new buildings, and by works on existing buildings (conversions, extensions, changes of use). SDES Sitadel.
- Existing buildings
- New buildings
Show the numbers
| Year | New buildings | Existing buildings | Total |
|---|---|---|---|
| 2025 | 15 | 38 | 53 |
| 2024 | 3 | 1 | 4 |
| 2023 | 5 | — | 5 |
| 2022 | 15 | 1 | 16 |
| 2021 | 109 | 2 | 111 |
| 2020 | 34 | 3 | 37 |
| 2019 | 54 | 4 | 58 |
| 2018 | 98 | 3 | 101 |
| 2017 | 63 | 2 | 65 |
| 2016 | 21 | 1 | 22 |
| 2015 | 28 | 2 | 30 |
| 2014 | 74 | 22 | 96 |
| 2013 | 55 | 12 | 67 |
Only permits that create dwellings are listed, so renovation that adds no home (refurbishing, insulating, re-roofing) is not counted. A permit is permission to build, not a finished home. The current year is left out until it is complete.
Other reports for Jouars-Pontchartrain
At the median sale price, a 90 m² home costs €323,190. With 10% down and a 30-year mortgage, the payment is €1,258 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
- €1,699
- Owning per month
- €1,074
Figures for Yvelines: Jouars-Pontchartrain 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 grew by 74 while 120 homes were started: 0.6 new residents for every new home.
- New residents per new home, 2022
- 0.6
- Population change, 2022
- +74
6.4% of the 2,537 homes counted in the 2023 census stood empty, whether for sale, to let or for other reasons.
- Empty, 2023 census
- 6.4%
- Empty homes
- 163