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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionTrinErni AG Bauunternehmung
Erni AG Bauunternehmung Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Erni AG Bauunternehmung is a construction company offering building construction, civil engineering, engineered structures (bridges and galleries) and railway construction, as well as customer service works. The company also develops, sells and manages selected real estate projects.

AI-generated
Offering

Products & services

Industry:Building Construction
✓ Offered5
Building construction
Small- to large-scale buildings in all elevations and difficulty levels, including new builds and further building-construction projects.
Civil engineering
Civil engineering works with varied activities, including road refurbishments, road realignments, roundabouts and other infrastructure work.
Engineering structures
Bridge and engineering construction for new builds and renovations, including railway, road and slow-mobility bridges, as well as galleries and viaducts.
Rail construction
Rail construction for new builds and renovations of historic structures along the rail network, including viaducts, galleries, tunnel portals and station upgrades.
Customer works
Customer service for matters related to construction, including consulting, overall project management, deployment planning, tendering, invoicing, as well as emergencies, and above- and below-ground construction works.
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4.0/5

Erni AG Bauunternehmung

Trust & reputation

ranQ Trust Score of Erni AG Bauunternehmung: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Erni AG Bauunternehmung scores 64.7 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.78.324%
  • 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.55.910%
  • 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.35.08%
Erni AG Bauunternehmung scores 78.2 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.79.212%
  • 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%
Erni AG Bauunternehmung 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%
Erni AG Bauunternehmung scores 37.1 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 35.37.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Erni AG Bauunternehmung reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.9 out of 5 stars from 8 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
4.9
of 5

Aggregated from 8 reviews across all connected sources

Sources
GGoogle4.98
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Via Coma 5
7014 Trin

At a glance

Legal form
Branch
UID
CHE-434.243.666
Founded
2018 · 8 years
Last commercial register change
September 4, 2018
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.
76.0
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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