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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesEngineerBaselAmstein + Walthert Basel AG
Amstein + Walthert Basel AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Amstein + Walthert Basel AG provides engineering and consulting services in building technology and related disciplines. Its activities include electrical, heating, ventilation, air-conditioning, refrigeration and plumbing engineering, as well as consulting on sustainable planning, construction and building operations.

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Service area

Offering

Products & services

Industry:Engineer
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4.1/5

Amstein + Walthert Basel AG

✓ Offered2
Engineering
Engineering services for building services engineering and complex building construction, including heating, ventilation, air conditioning, refrigeration, sanitary engineering as well as electrical systems and building automation.
Consulting
Advisory services from strategic planning through conversion of use to the operation of real estate and sites, including analyses, concepts, measures and sustainability assessments.
Trust & reputation

ranQ Trust Score of Amstein + Walthert Basel AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

Amstein + Walthert Basel AG 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%
Amstein + Walthert Basel AG 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%
Amstein + Walthert Basel AG 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%
Amstein + Walthert Basel AG 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

Amstein + Walthert Basel AG 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 November 2026.

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

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Location

Henric Petri-Strasse 15
4051 Basel

At a glance

Legal form
Corporation
UID
CHE-108.436.726
Founded
1996 · 30 years
Last commercial register change
September 14, 2026
Employees
21 to 50

Active in 1 of 26 cantons

  • BSBasel-City
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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