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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryAssociations & Interest GroupsInterest GroupsLucernede-macher Kolb
de-macher Kolb Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The company's core activity is the promotion and exchange of knowledge and experience in the field of earth building, particularly through the organization of events, courses, excursions and consulting services. The association represents the interests of professionals, entrepreneurs and private individuals who are involved with the topic of clay and earth building.

AI-generated
Offering

Products & services

Industry:Interest Groups
✓ Offered5
Clay building consulting
Free brief information on clay construction, phone-based technical advice, and referrals to specialists from consulting, training, planning, execution, and clay construction materials trading.
Finding experts
Directory and referrals for clay construction specialists in consulting, planning, execution, specialist planning, courses, research, and construction materials trading.
Events and continuing education on clay construction
Agenda with site visits, excursions, seminars, courses, exhibitions, and reports about clay and sustainable building.
Newsletter
Newsletter published about three times a year with announcements of events, information on clay construction in Switzerland, and insights into the association and its members.
Clay building projects and public clay buildings
Overview of clay construction projects, project updates, and a map of public clay buildings for orientation and inspiration.
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4.1/5

de-macher Kolb

Trust & reputation

ranQ Trust Score of de-macher Kolb: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

de-macher Kolb has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
de-macher Kolb scores 78.5 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.55.07%
de-macher Kolb scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
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).83.322%
de-macher Kolb scores 100.0 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 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

de-macher Kolb reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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Location

Eigerweg 4
6005 Lucerne

At a glance

Legal form
Sole proprietorship
UID
CHE-104.226.555
Founded
1995 · 31 years
Last commercial register change
July 7, 2021
Employees
1 to 10
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.
67.0
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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