Saint-Martin-d'Hères · report
Renovation in Saint-Martin-d'Hères
In 2025, 11% of the homes authorised were in existing buildings: conversions, extensions and changes of use.
- Homes in existing buildings, 2025
- 11%
Homes authorised in Saint-Martin-d'Hères: 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 | 76 | 9 | 85 |
| 2024 | 520 | 23 | 543 |
| 2023 | 27 | 12 | 39 |
| 2022 | 122 | 7 | 129 |
| 2021 | 282 | 7 | 289 |
| 2020 | 79 | 41 | 120 |
| 2019 | 12 | 5 | 17 |
| 2018 | 488 | 15 | 503 |
| 2017 | 395 | 19 | 414 |
| 2016 | 143 | — | 143 |
| 2015 | 5 | 5 | 10 |
| 2014 | 46 | 9 | 55 |
| 2013 | 74 | 18 | 92 |
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 Saint-Martin-d'Hères
At the median sale price, a 90 m² home costs €207,000. With 10% down and a 30-year mortgage, the payment is €806 a month. The HCSF caps it at 35% of a household's income.
- Payment, two incomes
- 21%
- Payment, one income
- 41%
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
- €1,215
- Owning per month
- €738
Figures for Isère: Saint-Martin-d'Hères has no reliable figures of its own.
31.7% fewer homes were licensed for construction in the last 12 months than in an average year of the past decade.
- Licensed, 12 months
- 6,432
In 2022 the population fell by 327 while 249 homes were started.
- Homes started, 2022
- 249
- Population change, 2022
- −327
6.5% of the 18,863 homes counted in the 2023 census stood empty, whether for sale, to let or for other reasons.
- Empty, 2023 census
- 6.5%
- Empty homes
- 1,225
Public bodies signed €3.6M of housing works here in 2025, and €3.6M since 2024.
- Signed in 2025
- €3.6M
- Per resident, 2025
- €94