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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionFlumsRio Hermann Hoch- und Tiefbau GmbH
Rio Hermann Hoch- und Tiefbau GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Rio Hermann GmbH is the provision of construction services in civil engineering and building construction, as well as in renovation. This includes, in particular, the realization of infrastructure projects in civil engineering and the implementation of demanding construction projects in building construction.

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Products & services

Industry:Building ConstructionCivil Engineering
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3.9/5

Rio Hermann Hoch- und Tiefbau GmbH

Site Preparation
✓ Offered5
Building construction
Building construction for multi-family houses, single-family houses and conversions; formwork, reinforcement and concrete work, exposed concrete, customer bricklayer work as well as partial renovations.
Civil engineering
Civil engineering for infrastructure projects, excavation, transport and excavator work; support foundations, earth movement, pipework and installation work, slope stabilisation and anchor drilling.
Site works
Site works around multi-family houses and building projects; earth movement, terrain work and outdoor facilities in connection with new builds and conversions.
Renovations
Renovations and partial renovations of structures; including chimney repairs, partial renovation of road sections and structural reinstatements in existing properties.
Specialist works
Specialist works in construction, such as exposed concrete, Misapor insulating concrete, walking excavator operations, anchor drilling and work on steep or difficult-to-access terrain.
Trust & reputation

ranQ Trust Score of Rio Hermann Hoch- und Tiefbau GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Rio Hermann Hoch- und Tiefbau GmbH scores 56.6 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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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.63.324%
  • 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.45.610%
  • 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.50.08%
Rio Hermann Hoch- und Tiefbau GmbH scores 83.0 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%
Rio Hermann Hoch- und Tiefbau GmbH 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%
Rio Hermann Hoch- und Tiefbau GmbH scores 2.3 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 35.2.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Rio Hermann Hoch- und Tiefbau GmbH reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 4.2 out of 5 stars from 5 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
4.2
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle4.25
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Lochrietstrasse
8890 Flums

At a glance

Legal form
Limited Liability Company
UID
CHE-113.566.381
Founded
2007 · 19 years
Last commercial register change
October 19, 2023
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.88.06%
  • 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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