Sion
Municipality in the canton of Valais FSO no. 6266 Data 2025, as of 29 Sept 2026
In 2025, 47 of 21’364 dwellings stood vacant in Sion, a vacancy rate of 0.22%.
The vacancy rate fell from 0.55% in 2016 to 0.22% in 2025 (-0.33 pp).
That is the 111th highest vacancy rate of 122 municipalities in the canton of Valais.
Key figures 2025
- Vacancy rate
- 0.22%
- Vacant dwellings
- 47
- Dwelling stock
- 21’364
Vacancy trend 2016-2025
| Year | Rate | Vacant | Stock |
|---|---|---|---|
| 2025 | 0.22% | 47 | 21’364 |
| 2024 | 0.82% | 169 | 20’610 |
| 2023 | 0.68% | 138 | 20’294 |
| 2022 | 0.77% | 154 | 20’000 |
| 2021 | 2.72% | 534 | 19’632 |
| 2020 | 2.32% | 450 | 19’397 |
| 2019 | 2.14% | 410 | 19’159 |
| 2018 | 1.43% | 270 | 18’881 |
| 2017 | 1.47% | 275 | 18’707 |
| 2016 | 0.55% | 99 | 18’000 |
Breakdown of vacant dwellings
Of the 47 vacant dwellings, 7 are in single-family houses and 40 in multi-family houses; 36 are for rent and 11 for sale; 28 are new and 19 older.
House type
| House type | Vacant | Rate | Share of vacant |
|---|---|---|---|
| Single-family houses | 7 | 0.03% | 14.9% |
| Multi-family houses | 40 | 0.19% | 85.1% |
Sale / rent
| Sale / rent | Vacant | Rate | Share of vacant |
|---|---|---|---|
| For sale | 11 | 0.05% | 23.4% |
| For rent | 36 | 0.17% | 76.6% |
Dwelling age
| Dwelling age | Vacant | Rate | Share of vacant |
|---|---|---|---|
| New dwellings | 28 | 0.13% | 59.6% |
| Older dwellings | 19 | 0.09% | 40.4% |
Comparison
The canton of Valais average is 1.18% (3’282 vacant of 278’136 dwellings).
Across Switzerland it is 1.00% (48’455 vacant of 4’845’500 dwellings).
| Comparison | Rate | Vacant | Stock |
|---|---|---|---|
| Sion | 0.22% | 47 | 21’364 |
| Valais | 1.18% | 3’282 | 278’136 |
| Switzerland | 1.00% | 48’455 | 4’845’500 |
More municipalities in the canton of Valais
Source and method
Source: Federal Statistical Office (FSO), survey of vacant dwellings (Leerwohnungszählung), via stats.swiss. The dwelling stock is estimated from the published counts and rates.
House type, tenure and dwelling age are three independent breakdowns of the same vacant dwellings; they cannot be combined (there is no "rented new dwelling" figure).
Vacancy data for 2025, statistics computed on 29 Sept 2026.