Soisy-sous-Montmorency · report
Renovation in Soisy-sous-Montmorency
In 2025, 0% of the homes authorised were in existing buildings: conversions, extensions and changes of use.
- Homes in existing buildings, 2025
- 0%
Homes authorised in Soisy-sous-Montmorency: 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 | 24 | — | 24 |
| 2024 | 92 | — | 92 |
| 2023 | 12 | 3 | 15 |
| 2022 | 18 | 1 | 19 |
| 2021 | 25 | 1 | 26 |
| 2020 | 10 | — | 10 |
| 2019 | 20 | 2 | 22 |
| 2018 | 41 | 1 | 42 |
| 2017 | 126 | 4 | 130 |
| 2016 | 5 | 4 | 9 |
| 2015 | 2 | — | 2 |
| 2014 | 3 | 6 | 9 |
| 2013 | 4 | — | 4 |
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 Soisy-sous-Montmorency
At the median sale price, a 90 m² home costs €330,480. With 10% down and a 30-year mortgage, the payment is €1,286 a month. The HCSF caps it at 35% of a household's income.
- Payment, two incomes
- 26%
- Payment, one income
- 52%
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
- €1,736
- Owning per month
- €1,021
Figures for Val-d'Oise: Soisy-sous-Montmorency has no reliable figures of its own.
32.3% fewer homes were licensed for construction in the last 12 months than in an average year of the past decade.
- Licensed, 12 months
- 4,869
In 2022 the population fell by 60 while 12 homes were started.
- Homes started, 2022
- 12
- Population change, 2022
- −60
6.8% of the 8,106 homes counted in the 2023 census stood empty, whether for sale, to let or for other reasons.
- Empty, 2023 census
- 6.8%
- Empty homes
- 550