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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSpecialized Construction ActivitiesDöttingenBau Ing AG
Bau Ing AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Bau Ing AG is the planning, design, assembly and maintenance of steel structures, plants and frameworks, including engineering, assembly and revision work, welding supervision and structural analysis.

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Offering

Products & services

Industry:Specialized Construction ActivitiesMetal Construction
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Bau Ing AG

✓ Offered7
Steel construction
Steel load-bearing structures for halls, bridges, tank and silo structures, towers, masts, chimneys, pipelines and special constructions.
Erection work
Erection of steel structures on site, including modifications, detailed planning and execution in accordance with specifications.
Engineering
Concept studies, alternative comparison, structural analysis, design calculation, BIM-compatible 3D models as well as overview and workshop drawings.
Plant construction
Assembly of plant components as well as revision work on plant components, if required with reinforcement of stressed areas.
Client advisory and owner representation
Client advisory and owner representation in steel construction, complemented by tender documents and building permit submission dossiers.
Review calculations and expert reports
Preparation of review calculations and expert reports for steel construction projects and load-bearing structures.
Welding supervision
Taking on welding supervision mandates by in-house employed welding specialist engineers.
Trust & reputation

ranQ Trust Score of Bau Ing AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Bau Ing AG scores 67.7 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.72.124%
  • 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.40.910%
  • 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.88.08%
Bau Ing AG scores 89.3 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.70.07%
Bau Ing 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%
Bau Ing AG scores 45.7 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 35.45.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Bau Ing AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.8 out of 5 stars from 4 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 4 reviews across all connected sources

Sources
GGoogle4.84
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Gewerbestrasse 21
5312 Döttingen
Opening hours
Mon
07:00 - 17:00
Tue
07:00 - 17:00
Wed
07:00 - 17:00
Thu
07:00 - 17:00
Fri
07:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.694.970
Founded
1994 · 32 years
Last commercial register change
July 8, 2025
Employees
11 to 20
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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