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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureGeneral ContractorsWil SgKielholz+Partner AG
Kielholz+Partner AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Kielholz and Partner is the provision of engineering services, particularly in the field of civil and structural engineering, including services such as seismic analysis, BIM, CAD, renovation and conversion of existing buildings, as well as steel construction.

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Offering

Products & services

Industry:General Contractors
✓ Offered7
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Kielholz+Partner AG

Building construction
Building construction for residential projects, industrial construction, renovation, trade-fair construction and steel construction.
Earthquake analyses
Earthquake analyses according to SIA standards with software support, precautionary measures, risk avoidance and emergency planning.
Park deck system
Modular parking-deck system with prefabricated elements for quick assembly and various applications.
BIM (Building Information Modeling)
Planning, execution and operation of buildings using a digital building model as an information basis.
CAD
Designs for building construction, civil engineering and steel construction, including workshop drawings, product definitions as well as production-ready parts and assemblies.
Renovations and conversions
Support for renovation and conversion projects using the altbauweise network and collaborating with regional and cross-cantonal partners.
Civil engineering
Civil engineering via the partner office Kielholz + Stäheli AG in Eschlikon.
Trust & reputation

ranQ Trust Score of Kielholz+Partner AG: 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.

Kielholz+Partner 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.
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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%
Kielholz+Partner AG scores 93.9 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%
Kielholz+Partner AG scores 83.3 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).83.322%
Kielholz+Partner AG scores 71.4 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 35.71.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Kielholz+Partner 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 October 2026.

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

Knowledge

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Location

Säntisstrasse 2a
9500 Wil Sg

At a glance

Legal form
Corporation
UID
CHE-113.332.469
Founded
2006 · 20 years
Last commercial register change
September 22, 2022
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.85.03%
    • Full methodology

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