Montmirail (51) · report
Renovation in Montmirail (51)
In 2025, 75% of the homes authorised were in existing buildings: conversions, extensions and changes of use.
- Homes in existing buildings, 2025
- 75%
Homes authorised in Montmirail (51): 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 | 3 | 9 | 12 |
| 2023 | 125 | 3 | 128 |
| 2022 | 2 | — | 2 |
| 2021 | 4 | 2 | 6 |
| 2020 | 1 | 1 | 2 |
| 2019 | 4 | 3 | 7 |
| 2018 | 10 | 4 | 14 |
| 2017 | 1 | — | 1 |
| 2016 | 4 | 5 | 9 |
| 2015 | 4 | — | 4 |
| 2014 | 23 | 4 | 27 |
| 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 Montmirail (51)
At the median sale price, a 90 m² home costs €131,670. With 10% down and a 30-year mortgage, the payment is €512 a month. The HCSF caps it at 35% of a household's income.
- Payment, two incomes
- 13%
- Payment, one income
- 26%
Figures for Marne: Montmirail (51) has no reliable figures of its own.
28.0% fewer homes were licensed for construction in the last 12 months than in an average year of the past decade.
- Licensed, 12 months
- 1,934
In 2022 the population fell by 16 while 4 homes were started.
- Homes started, 2022
- 4
- Population change, 2022
- −16
12.2% of the 1,978 homes counted in the 2023 census stood empty, whether for sale, to let or for other reasons.
- Empty, 2023 census
- 12.2%
- Empty homes
- 242