In brief
In Olten (canton of Solothurn), the Federal Register of Buildings and Dwellings lists 12 buildings that are planned or under construction: 12 projected, 0 authorised and 0 under construction. Together they include 51 planned dwellings. As of 11.10.2026.
Buildings planned and under construction
All projects, under construction first, then by number of dwellings.
| Address | Status | Dwellings |
|---|---|---|
| Zielweg 12 | projected | 7 |
| Zielweg 3 | projected | 6 |
| Zielweg 2 | projected | 6 |
| Zielweg 4 | projected | 6 |
| Zielweg 6 | projected | 5 |
| Zielweg 8 | projected | 5 |
| Zielweg 7 | projected | 5 |
| Zielweg 9 | projected | 5 |
| Zielweg 11 | projected | 5 |
| Zielweg 5 | projected | 1 |
| Zielweg 1 | projected | – |
| Zielweg 10 | projected | – |
Frequently asked questions about Olten
How many new-build projects are there in Olten?
In Olten (canton of Solothurn), the Federal Register of Buildings and Dwellings lists 12 buildings that are planned or under construction: 12 projected, 0 authorised and 0 under construction. Together they include 51 planned dwellings. As of 11.10.2026.
Where can I find building permit applications in Olten?
Building permit applications from Olten are published in the official gazette of the canton of Solothurn or by the municipality. Vorbau doesn’t analyse this canton’s building permit applications yet, but you can see the planned buildings from the building register on the map.
How do I find out about new building projects in Olten?
With an alert on vorbau.ch: draw an area around Olten on the map and you’ll get an email as soon as a building there is newly registered, authorised, started or completed. One alert is free.
Other municipalities in the canton of Solothurn
Sources: Federal Statistical Office, Federal Register of Buildings and Dwellings (RBD); cantonal official gazettes via amtsblattportal.ch; SOGC. Planned buildings may change or not go ahead.