Fontenay-Trésigny · report
Renovation in Fontenay-Trésigny
In 2025, 4% of the homes authorised were in existing buildings: conversions, extensions and changes of use.
- Homes in existing buildings, 2025
- 4%
Homes authorised in Fontenay-Trésigny: 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 | 54 | 2 | 56 |
| 2024 | 17 | 1 | 18 |
| 2023 | 20 | 5 | 25 |
| 2022 | 11 | 26 | 37 |
| 2021 | 33 | 1 | 34 |
| 2020 | 61 | 3 | 64 |
| 2019 | 54 | — | 54 |
| 2018 | 15 | 4 | 19 |
| 2017 | 74 | 2 | 76 |
| 2016 | 29 | — | 29 |
| 2015 | 63 | 6 | 69 |
| 2014 | 46 | 1 | 47 |
| 2013 | 131 | 2 | 133 |
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-Trésigny
At the median sale price, a 90 m² home costs €269,280. With 10% down and a 30-year mortgage, the payment is €1,048 a month. The HCSF caps it at 35% of a household's income.
- Payment, two incomes
- 23%
- Payment, one income
- 45%
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
- €1,376
- Owning per month
- €1,001
Figures for Seine-et-Marne: Fontenay-Trésigny has no reliable figures of its own.
29.0% fewer homes were licensed for construction in the last 12 months than in an average year of the past decade.
- Licensed, 12 months
- 7,285
In 2022 the population grew by 107 while 19 homes were started: 5.6 new residents for every new home.
- New residents per new home, 2022
- 5.6
- Population change, 2022
- +107
6.7% of the 2,683 homes counted in the 2023 census stood empty, whether for sale, to let or for other reasons.
- Empty, 2023 census
- 6.7%
- Empty homes
- 179