Bois-d'Arcy (78) · report
Renovation in Bois-d'Arcy (78)
In 2025, 9% of the homes authorised were in existing buildings: conversions, extensions and changes of use.
- Homes in existing buildings, 2025
- 9%
Homes authorised in Bois-d'Arcy (78): 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 | 10 | 1 | 11 |
| 2024 | 2 | 1 | 3 |
| 2023 | 3 | 74 | 77 |
| 2022 | 10 | 8 | 18 |
| 2021 | 68 | — | 68 |
| 2020 | 14 | 3 | 17 |
| 2019 | 94 | — | 94 |
| 2018 | 233 | 1 | 234 |
| 2017 | 493 | — | 493 |
| 2016 | 146 | 6 | 152 |
| 2015 | 3 | — | 3 |
| 2014 | 46 | 3 | 49 |
| 2013 | 6 | 1 | 7 |
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 Bois-d'Arcy (78)
At the median sale price, a 90 m² home costs €309,960. With 10% down and a 30-year mortgage, the payment is €1,206 a month. The HCSF caps it at 35% of a household's income.
- Payment, two incomes
- 23%
- Payment, one income
- 47%
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
- €1,655
- Owning per month
- €1,034
Figures for Yvelines: Bois-d'Arcy (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
In 2022 the population grew by 361 while 16 homes were started: 22.6 new residents for every new home.
- New residents per new home, 2022
- 22.6
- Population change, 2022
- +361
5.0% of the 7,485 homes counted in the 2023 census stood empty, whether for sale, to let or for other reasons.
- Empty, 2023 census
- 5.0%
- Empty homes
- 372