Montmagny · report
Renovation in Montmagny
In 2025, 1% of the homes authorised were in existing buildings: conversions, extensions and changes of use.
- Homes in existing buildings, 2025
- 1%
Homes authorised in Montmagny: 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 | 128 | 1 | 129 |
| 2024 | 2 | — | 2 |
| 2023 | 1 | 1 | 2 |
| 2022 | 14 | 1 | 15 |
| 2021 | 10 | — | 10 |
| 2020 | 119 | 1 | 120 |
| 2019 | 37 | — | 37 |
| 2018 | 103 | 4 | 107 |
| 2017 | 13 | 4 | 17 |
| 2016 | 72 | — | 72 |
| 2015 | 201 | 1 | 202 |
| 2014 | 26 | — | 26 |
| 2013 | 74 | — | 74 |
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 Montmagny
At the median sale price, a 90 m² home costs €293,220. With 10% down and a 30-year mortgage, the payment is €1,141 a month. The HCSF caps it at 35% of a household's income.
- Payment, two incomes
- 29%
- Payment, one income
- 57%
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
- €1,738
- Owning per month
- €901
Figures for Val-d'Oise: Montmagny 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 grew by 473 while 4 homes were started: 118.3 new residents for every new home.
- New residents per new home, 2022
- 118.3
- Population change, 2022
- +473
6.0% of the 5,935 homes counted in the 2023 census stood empty, whether for sale, to let or for other reasons.
- Empty, 2023 census
- 6.0%
- Empty homes
- 356