Saint-Cyr-l'École · report
Renovation in Saint-Cyr-l'École
In 2025, 49% of the homes authorised were in existing buildings: conversions, extensions and changes of use.
- Homes in existing buildings, 2025
- 49%
Homes authorised in Saint-Cyr-l'École: 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 | 116 | 110 | 226 |
| 2024 | 88 | 31 | 119 |
| 2023 | 213 | 126 | 339 |
| 2022 | 227 | 32 | 259 |
| 2021 | 147 | 7 | 154 |
| 2020 | 341 | — | 341 |
| 2019 | 160 | 10 | 170 |
| 2018 | 627 | 1 | 628 |
| 2017 | 161 | 1 | 162 |
| 2016 | 314 | — | 314 |
| 2015 | 243 | 2 | 245 |
| 2014 | 380 | 4 | 384 |
| 2013 | 207 | 9 | 216 |
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 Saint-Cyr-l'École
At the median sale price, a 90 m² home costs €414,180. With 10% down and a 30-year mortgage, the payment is €1,612 a month. The HCSF caps it at 35% of a household's income.
- Payment, two incomes
- 32%
- Payment, one income
- 63%
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
- €1,766
- Owning per month
- €1,492
Figures for Yvelines: Saint-Cyr-l'École 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 817 while 219 homes were started: 3.7 new residents for every new home.
- New residents per new home, 2022
- 3.7
- Population change, 2022
- +817
7.4% of the 10,244 homes counted in the 2023 census stood empty, whether for sale, to let or for other reasons.
- Empty, 2023 census
- 7.4%
- Empty homes
- 760