Fontenay-sous-Bois · report
Renovation in Fontenay-sous-Bois
In 2025, 48% of the homes authorised were in existing buildings: conversions, extensions and changes of use.
- Homes in existing buildings, 2025
- 48%
Homes authorised in Fontenay-sous-Bois: 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 | 81 | 76 | 157 |
| 2024 | 591 | 14 | 605 |
| 2023 | 354 | 15 | 369 |
| 2022 | 137 | 15 | 152 |
| 2021 | 455 | 20 | 475 |
| 2020 | 89 | 17 | 106 |
| 2019 | 127 | 23 | 150 |
| 2018 | 315 | 10 | 325 |
| 2017 | 394 | 10 | 404 |
| 2016 | 195 | 108 | 303 |
| 2015 | 163 | 36 | 199 |
| 2014 | 55 | 21 | 76 |
| 2013 | 22 | 13 | 35 |
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 Fontenay-sous-Bois
At the median sale price, a 90 m² home costs €531,810. With 10% down and a 30-year mortgage, the payment is €2,070 a month. The HCSF caps it at 35% of a household's income.
- Payment, two incomes
- 42%
- Payment, one income
- 84%
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
- €2,063
- Owning per month
- €1,863
Figures for Val-de-Marne: Fontenay-sous-Bois has no reliable figures of its own.
9.9% more homes were licensed for construction in the last 12 months than in an average year of the past decade.
- Licensed, 12 months
- 12,010
In 2022 the population grew by 1,111 while 622 homes were started: 1.8 new residents for every new home.
- New residents per new home, 2022
- 1.8
- Population change, 2022
- +1,111
5.9% of the 24,672 homes counted in the 2023 census stood empty, whether for sale, to let or for other reasons.
- Empty, 2023 census
- 5.9%
- Empty homes
- 1,453