Batz-sur-Mer · report
Renovation in Batz-sur-Mer
In 2025, 36% of the homes authorised were in existing buildings: conversions, extensions and changes of use.
- Homes in existing buildings, 2025
- 36%
Homes authorised in Batz-sur-Mer: 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 | 9 | 5 | 14 |
| 2024 | 8 | 2 | 10 |
| 2023 | 5 | 2 | 7 |
| 2022 | 9 | 2 | 11 |
| 2021 | 13 | — | 13 |
| 2020 | 7 | — | 7 |
| 2019 | 31 | 1 | 32 |
| 2018 | 47 | 1 | 48 |
| 2017 | 50 | 1 | 51 |
| 2016 | 32 | — | 32 |
| 2015 | 4 | 2 | 6 |
| 2014 | 10 | — | 10 |
| 2013 | 13 | — | 13 |
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 Batz-sur-Mer
At the median sale price, a 90 m² home costs €403,920. With 10% down and a 30-year mortgage, the payment is €1,572 a month. The HCSF caps it at 35% of a household's income.
- Payment, two incomes
- 34%
- Payment, one income
- 68%
Renting a 90 m² apartment costs less each month than owning 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
- €1,276
- Owning per month
- €1,405
Figures for Loire-Atlantique: Batz-sur-Mer has no reliable figures of its own.
13.1% fewer homes were licensed for construction in the last 12 months than in an average year of the past decade.
- Licensed, 12 months
- 10,457
In 2022 the population grew by 93 while 4 homes were started: 23.3 new residents for every new home.
- New residents per new home, 2022
- 23.3
- Population change, 2022
- +93
2.2% of the 4,218 homes counted in the 2023 census stood empty, whether for sale, to let or for other reasons.
- Empty, 2023 census
- 2.2%
- Empty homes
- 92