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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil Engineering FirmsZurichKlein Engineering
Klein Engineering Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Klein Engineering is the planning, design and consulting in the field of high-rise and bridge construction, particularly in the areas of prestressed concrete, steel construction and composite structures. The company offers services such as cable-stayed calculations, finite element calculations, project reviews, construction controls and construction management. It specializes in the design and construction of bridges, high-rise buildings and other special structures, including cable-stayed, arch and suspension bridges.

AI-generated
Offering

Products & services

Industry:Civil Engineering Firms
✓ Offered9
Building construction
New construction, alterations, strengthening and refurbishment of above-ground structures; prestressing, reinforced concrete, masonry, pre-stressed concrete, flat slabs, earthquake assessments and seismic strengthening.
Civil engineering
General civil engineering, special bridge construction, design of cable-stayed, arch and incremental launching bridges, condition surveys, strengthening, repairs and construction supervision.
Construction methods
Construction-stage calculations, stressing programmes, free cantilever calculations, incremental sliding, heavy-load handling, bridge lifting and translation, temporary structures and site monitoring.
Project review and studies
Preliminary projects, concept studies, variants and proposals, project reviews, risk assessments and second opinions for construction projects.
Jury panels and commissions
Expert juries, jury reports, competition processes and participation in construction commissions for bridge and above-ground building projects.
Architect consultancy
Advising architects during the competition phase, technical support for construction projects and quality assurance within the design team.
Technical construction management and site inspections
Site inspections, technical construction management, site instructions, installation instructions, manuals and site monitoring.
Earthquake assessments and seismic strengthening
Earthquake assessments, seismic strengthening and subsequent strengthening of concrete, steel and timber structures.
Heavy-load handling and incremental launching
Heavy-load handling, bridge lifting, translations and launching works as part of construction methods and bridge erection.
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4.1/5

Klein Engineering

Trust & reputation

ranQ Trust Score of Klein Engineering: 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.

Klein Engineering 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%
Klein Engineering 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%
Klein Engineering scores 85.0 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).85.022%
Klein Engineering scores 48.6 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 35.48.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Klein Engineering 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.

Knowledge

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Location

Culmannstrasse 26
8006 Zurich
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-111.977.603
Founded
2004 · 22 years
Last commercial register change
December 8, 2010
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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