Engineering and planning tenders in the canton of Solothurn
Here are the public tenders for engineering and planning services in the canton of Solothurn: open procedures first, then closed ones. Buyers with several tenders here include Einwohnergemeinde Olten Direktion Bau and Schweizerische Bundesbahnen SBB, Infrastruktur – Einkauf, Supply Chain und Produktion, Einkauf Bauprojekte Region Mitte. Each detail page summarises the buyer, scope and dates, and links to the official notice on simap.ch. All industries together are on the page Public tenders in the canton of Solothurn.
Civil engineering, architecture, building services design, environmental and transport planning, and site supervision: planning mandates from public buyers in the canton of Solothurn, covering CPV division 71.
Open tenders
Renovation and conversion of the Capuchin monastery into a music school
Einwohnergemeinde Olten is seeking a general planner team to continue and deliver the submitted project converting the listed Kapuzinerkloster into a music school, addressing the school’s unresolved space shortage.
Nmin sampling and analysis (Nmin method) as part of the Niederbipp-Gäu-Olten nitrate project (cantons of SO and BE)
Amt für Umwelt is commissioning Nmin soil sampling and laboratory analysis for the 2027-2032 monitoring phase of the Niederbipp-Gäu-Olten nitrate project, supporting targeted fertilisation to reduce nitrate in drinking-water sources.
Closed tenders
Inspections of fire protection systems
Solothurnische Gebäudeversicherung is replacing its expiring inspection contract with inspections of fire protection systems to verify compliant installation and operation in insured buildings.
Olten, Neuer Bahnhofplatz Olten (NBO)
Arbeitsgattung Projektmanagement/Bauherrenunterstützung (PM-BHU) Umfang der Leistungen als Projektmanagement / Bauherrenunterstützung (PM / BHU) Beschrieb der Teilleistungsmodule in DOK B Kapitel 5 Die Teilleistungsmodule können nicht explizit mit SIA-Projektphasen verknüpft werden.
Complete renovation of Basel marshalling yard West main signal box and East main signal box External trackwork management Subproject phases 32-53
Die Stellwerke West und Ost des Rangierbahnhofs Basel müssen saniert werden, da die bestehende Infrastruktur sowie die technischen Anlagen den aktuellen Anforderungen der SBB nicht mehr entsprechen. Zudem stehen sanierungsbedürftige oder nicht den Nutzerbedürfnissen entsprechende Räume derzeit leer. Daher ist eine umfassende Ertüchtigung der Gebäude erforderlich.
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Full list of tendersEvery tender on this page, open and closed, with its submission deadline.ShowHide
- Inspections of fire protection systemsSO13.10.2026, 23:5943065
- Olten, Neuer Bahnhofplatz Olten (NBO)SO09.10.2026, 16:4542859
- Complete renovation of Basel marshalling yard West main signal box and East main signal box External trackwork management Subproject phases 32-53SO31.08.2026, 15:0037238
- Renovation of Baumgarten residential care centre, Bettlach - Selective planner selection procedureSO13.08.2026, 16:0039598
- General planning services for the structural extension of Haus zur Heimat, OltenSO04.08.2026, 23:5939565
- Renovation of Olten City Theatre – Selective planner selection procedure for general planning teamsSO07.08.2026, 16:0039413
- Lucerne Through Station, 1st stage; experts in civil engineering for the construction/approval project TP1 and TP2SO14.09.2026, 15:0033162