The commercial register lists 1 843 active companies in construction in the canton of Solothurn, placing Solothurn 15th nationally for this sector (3 % of the national total). 1 402 of them (76 %) are VAT-registered, and 626 (34 %) published an official change in the past 18 months: registration, amendment, change of officers, share capital or address.
The first email goes out within the minute, with the last 30 days of your perimeter: new registrations, changes of officers, moves, capital. Then two morning emails with only what has moved since, as soon as there is something new. No account, no password.
Construction is the sector that creates and strikes off the most companies: general contractors, structural work, finishing trades, installers. A new registration almost always means an immediate need for insurance, equipment leasing, fiduciary services and labour.
This sector accounts for 11 % of companies classified in the canton of Solothurn, against 9 % across Switzerland. 9 companies in construction were registered in the canton of Solothurn over the past 30 days, 26 over 90 days.
Solothurn is an industrial canton: watchmaking and microtechnology in Grenchen and Solothurn, mechanical and metal engineering in the Niederamt and around Olten, and logistics around Olten and Egerkingen at the motorway junction. Industrial SMEs dominate, supported by fiduciaries and engineering firms.
Swiss construction counts 52,621 establishments and 368,971 jobs, an SME fabric dominated by finishing trades. After two flat years the sector grew again in 2025 (construction spending up 3.2%), driven by a historic housing shortage, low interest rates and a well filled public order book.
Swiss construction splits into three NOGA divisions. Building construction (41) holds 9,810 establishments and 87,863 jobs, civil engineering (42) remains a narrow club of 1,189 establishments and 24,266 jobs, and specialised construction works (43) form the bulk with 41,622 establishments and 256,842 jobs, according to the Federal Statistical Office STATENT 2024 business census.
That imbalance shapes any sales approach: nearly eight in ten establishments are finishing trade firms (electrical, plumbing, heating, plastering, joinery, tiling, facades), typically five to thirty people and an owner who decides alone. The large general contractors (Implenia, Marti, Losinger Marazzi, Steiner, HRS, Frutiger, ERNE) win the structural work and pass a large share of the volume down to subcontractors.
Geographically, Zurich (7,394 establishments, 54,845 jobs), Bern (5,601 and 42,111), Vaud (4,910 and 31,451), Aargau (4,044 and 26,455), Ticino (3,287 and 20,040) and St. Gallen (3,276 and 23,601) form the core.
After a trough in 2024 (construction spending down 0.6% according to the Federal Statistical Office, with building falling and civil engineering rising), the recovery was confirmed in 2025: provisional results show construction spending up 3.2% and construction investment up 3.5%, with conversion and extension work (+3.5%) pulling as hard as new build (+3.4%).
The main construction sector posted turnover of CHF 23.9 billion in 2025, 2.1% above 2024, and the Swiss Contractors Association expects around CHF 24.4 billion in 2026. Housing is the engine: residential orders rose 11% in 2025. Public demand remains solid, with public construction spending up 5.2% and public construction investment up 6.7% over the year.
The real bottleneck is labour and land, not demand. The vacant dwelling rate fell to 0.93% on 1 June 2026, meaning 45,493 homes across Switzerland, with Zug at 0.20%, Geneva at 0.31% and Zurich at 0.52%: objections, permit timelines and land availability weigh more than financing. The new national agreement for 2026 to 2031 stabilises the wage framework for six years but raises the payroll over its term.
Construction law is cantonal and communal: every canton has its own building act, zoning plans and permit procedures, which is why timelines differ sharply between Zurich, Geneva and Valais. Technical standards come from the professional bodies: SIA norms and the CAN standard item catalogue used for tenders.
Social partners structure the sector to a degree rare in Europe. The national collective agreement for main construction, negotiated between the Swiss Contractors Association and the Unia and Syna unions, is declared generally binding and sets minimum wages, annualised hours and early retirement from age 60. Joint commissions inspect sites, Suva handles accident prevention and trade funds administer contributions.
On the client side, public bodies dominate: the Swiss Federal Railways, the Federal Roads Office, armasuisse, cantonal building and civil engineering offices, cities, pension funds and large institutional real estate investors. Public contracts run through simap.ch, under the revised federal public procurement act and the intercantonal AIMP agreement, which weight quality and sustainability more heavily than price alone.
Who buys what: finishing trade firms buy materials and site equipment, commercial vehicles, plant hire, measurement and invoicing software, accounting and fiduciary services, recruitment and staff leasing. General contractors and developers buy engineering, geotechnics, surveying, BIM planning, construction insurance, financing and project management.
Signals to watch: municipal building permits announce activity six to eighteen months ahead, simap.ch reveals who won a main lot and therefore its future subcontractors, and job postings for site managers betray a filling order book.
How ciblr helps: isolate by canton and NOGA division the firms with 5 to 49 employees that form the addressable core of the finishing trades, spot recent commercial register entries for a first approach before the incumbent supplier settles in, and combine size, location and sub-sector to build a prospecting list that follows the real geography of building sites rather than the administrative map.
Of these 1 843 companies, the dominant legal forms are: Limited liability company (GmbH / Sàrl) (46 %), Public limited company (AG / SA) (28 %), Sole proprietorship (24 %). 303 were entered in the commercial register in 2025 and 2026, that is 16 % of the active base; 164 registrations in 2025. That is well above the average of the three previous years (135 a year): the sector is attracting new entrants.
Share capital is known for 1 375 companies (75 %): CHF 140 M combined, median company in the 20-100k band; 495 of them (36 %) have capital of at least CHF 100,000.
1 412 companies (77 %) are VAT-registered, a sign of real activity; 1 854 (101 %) have at least one registered director; 401 publish a general phone or email, 427 have a website verified by ciblr, and 28 run job postings on Job-Room.
SOGC publications in the last 90 days: 34 new registrations, 22 changes of directors, 1 capital changes, 21 relocations of seat, 28 other amendments, 9 liquidations or deletions.
1 843 companies in construction are registered with the commercial register as active in the canton of Solothurn, or 3 % of the 67 865 companies in the sector across Switzerland.
1 402 of these companies (76 %) are VAT-registered according to the UID register, which generally indicates turnover above CHF 100 000 and genuine activity.
ciblr gives you three days of watch on this target: the last 30 days of movements within the minute, then two morning emails with what has moved, as soon as there is something new. The subscription at CHF 299 per month gives access to the whole target, with contact details, Excel export and change tracking.
Most recent SOGC publication captured for this canton: 2 days ago. 608 publications captured in the past 30 days. Company officers there are re-read directly in the cantonal commercial register.
Every company counted here is registered with the commercial register (Zefix) with the status "active". The sector is derived from the FSO's NOGA code, the size is estimated by ciblr from official publications (legal form, share capital, declared headcount, VAT registration), and "recent signal" means an SOGC publication (registration, amendment, change of officers, share capital or address) in the past 18 months. The figures are recalculated every week from the ciblr database. No data is purchased or invented.
ciblr sends you three days of watch of companies in construction in the canton of Solothurn: the last 30 days within the minute, then two morning emails, as soon as the perimeter moves. For the whole target, the subscription is CHF 299 per month, no commitment.
The same figures for neighbouring cantons, useful for regional prospecting.