Olten
Municipality in the canton of Solothurn FSO no. 2581 Data 2025, as of 29 Sept 2026
In 2025, 227 of 11’019 dwellings stood vacant in Olten, a vacancy rate of 2.06%.
The vacancy rate fell from 2.99% in 2016 to 2.06% in 2025 (-0.93 pp).
That is the 36th highest vacancy rate of 106 municipalities in the canton of Solothurn.
Key figures 2025
- Vacancy rate
- 2.06%
- Vacant dwellings
- 227
- Dwelling stock
- 11’019
Vacancy trend 2016-2025
| Year | Rate | Vacant | Stock |
|---|---|---|---|
| 2025 | 2.06% | 227 | 11’019 |
| 2024 | 2.44% | 267 | 10’943 |
| 2023 | 2.50% | 273 | 10’920 |
| 2022 | 3.87% | 421 | 10’879 |
| 2021 | 3.66% | 395 | 10’792 |
| 2020 | 3.28% | 351 | 10’701 |
| 2019 | 3.04% | 325 | 10’691 |
| 2018 | 2.68% | 284 | 10’597 |
| 2017 | 2.75% | 292 | 10’618 |
| 2016 | 2.99% | 314 | 10’502 |
Breakdown of vacant dwellings
Of the 227 vacant dwellings, 7 are in single-family houses and 220 in multi-family houses; 214 are for rent and 13 for sale; 0 are new and 227 older.
House type
| House type | Vacant | Rate | Share of vacant |
|---|---|---|---|
| Single-family houses | 7 | 0.06% | 3.1% |
| Multi-family houses | 220 | 2.00% | 96.9% |
Sale / rent
| Sale / rent | Vacant | Rate | Share of vacant |
|---|---|---|---|
| For sale | 13 | 0.12% | 5.7% |
| For rent | 214 | 1.94% | 94.3% |
Dwelling age
| Dwelling age | Vacant | Rate | Share of vacant |
|---|---|---|---|
| New dwellings | 0 | 0.00% | 0% |
| Older dwellings | 227 | 2.06% | 100% |
Comparison
The canton of Solothurn average is 2.05% (3’003 vacant of 146’488 dwellings).
Across Switzerland it is 1.00% (48’455 vacant of 4’845’500 dwellings).
| Comparison | Rate | Vacant | Stock |
|---|---|---|---|
| Olten | 2.06% | 227 | 11’019 |
| Solothurn | 2.05% | 3’003 | 146’488 |
| Switzerland | 1.00% | 48’455 | 4’845’500 |
More municipalities in the canton of Solothurn
- Grenchen1.27%
- Solothurn1.24%
- Zuchwil5.19%
- Biberist1.22%
- Dornach2.11%
- Derendingen1.07%
- Trimbach6.40%
- Oensingen1.20%
- Balsthal3.44%
- Bellach2.19%
- Gerlafingen0.51%
- Wangen bei Olten2.95%
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.