Between Sion
and Lausanne
One team, two locations. We welcome you in Lausanne and in Sion, Monday to Friday, 9 am to 5 pm.
Source: Federal Office of Topography swisstopo, swissTLMRegio 2026
Client meetings
Lausanne
Place de la Gare 12 1003 LausanneMonday to Friday, 9 am – 5 pm
Client meetings
Sion
Rue de Clodevis 13 1967 Bramois, SionMonday to Friday, 9 am – 5 pm
For both locations: +41 79 128 95 49 hello@osom.ch
Meeting in person
- 01
You get in touch
Through the contact form, by email or by phone. We agree on a time and a place, Monday to Friday, between 9 am and 5 pm.
- 02
We welcome you in Lausanne or in Sion
Whichever is closer to you. You bring your question, and we look at it together.
- 03
We decide the next step together
If we can help, we send you a written proposal. Nothing starts without your agreement.
The meeting comes with no obligation.
The same services in Lausanne and in Sion.
See the services