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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceMüllheim DorfTschanen AG Bauunternehmung
Tschanen AG Bauunternehmung Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Tschanen AG Bauunternehmung is a family-owned construction company that carries out residential construction, renovations and commercial, industrial and public building projects. Its services include general and engineering civil works, concrete and mobile-crane operations, bespoke customer works, project development and real-estate activities via Tschanen Immobilien AG.

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Products & services

Industry:Building Maintenance
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4.6/5

Tschanen AG Bauunternehmung

6
Residential construction
Single-family houses, multi-family houses and residential developments; project development from the idea to completion, all from one source.
Conversion & renovation
Renovations, refurbishments, building renewal and preservation of building fabric for existing structures; careful modernisation with a focus on maintaining value.
Commercial and industrial construction
Industrial halls, commercial buildings and production facilities; project development from the idea to handing over the keys.
Public buildings, schools, clinics
Kindergartens, schools, retirement centres, hospitals, clinics, town houses and municipal centres; construction for public clients.
General civil works
Utility lines, sewer systems, site connections and forecourts for infrastructure, drainage and access in new development areas and around buildings.
Engineering civil works
Bridges, culverts for streams, concrete repairs, retaining walls as well as concrete yards and roads for technically demanding infrastructure projects.
Trust & reputation

ranQ Trust Score of Tschanen AG Bauunternehmung: 4.6 out of 5.0

Trust Score4.6/ 5.0

Excellent

x

Data basis 96% · As of October 2026

Tschanen AG Bauunternehmung scores 89.4 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.85.124%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.95.110%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.95.08%
Tschanen AG Bauunternehmung scores 92.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.82.07%
Tschanen AG Bauunternehmung scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Tschanen AG Bauunternehmung scores 80.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.80.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Tschanen AG Bauunternehmung reaches a ranQ Trust Score of 4.6 out of 5.0 — rated «Excellent». The rating draws, among other things, on 4.8 out of 5 stars from 41 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.8
of 5

Aggregated from 41 reviews across all connected sources

Sources
GGoogle4.841
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Falewis 1
8555 Müllheim Dorf
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:30
Tue
07:00 - 12:00, 13:00 - 17:30
Wed
07:00 - 12:00, 13:00 - 17:30
Thu
07:00 - 12:00, 13:00 - 17:30
Fri
07:00 - 12:00, 13:00 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-104.062.650
Founded
1983 · 43 years
Last commercial register change
July 28, 2026
Employees
21 to 50
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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