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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil EngineeringLausenE. Erny Tiefbau- und Umgebungsarbeiten AG
E. Erny Tiefbau- und Umgebungsarbeiten AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of the company 'E. Erny Tiefbau- und Umgebungsarbeiten AG' encompasses the following services: demolition, earthworks, pipeline construction, natural stone walls, stone gardens, squares, stairs and paths, and model gardens. The company thus offers a wide range of services in the field of civil engineering and environmental construction, including the construction of natural stone walls, stone gardens and other landscape structures.

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Products & services

Industry:Civil Engineering
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4.2/5

E. Erny Tiefbau- und Umgebungsarbeiten AG

Site Preparation
✓ Offered8
Civil engineering works
Demolition, earthworks and utility network construction; GPS-controlled excavation works, backfilling, terrain modelling, slope stabilisation, embankments, gravel spreads, renaturalisation and special works.
Utility network construction
Utility lines, sewer systems, manholes, trenches and drainage pipes for water, electricity, gas, district heating, communications and drainage.
Earthworks
GPS-controlled excavation works, backfilling, terrain modelling, slope stabilisation, embankments, gravel spreads, renaturalisation and special works.
Demolition and dismantling
Demolition and dismantling of above-ground structures of all types, clearing works, and proper separation, crushing and disposal of demolition material.
Site works
Natural stone walls, rock gardens as well as squares, stairs and paths made of natural stone, concrete, interlocking paving blocks, marl and fine crushed gravel.
Natural stone walls
Natural stone walls made of Jura limestone and shell limestone, granite blocks, granite stelae or stone gabions as retaining walls, boundary walls or seating walls.
Rock gardens
Rock gardens made of Alpine limestone, Jurassic limestone gravel, schroppen, boulder stones, granite stones, round gravel, crushed gravel and Jurassic stones.
Squares, stairs and paths
Squares, stairs and paths made of concrete and granite slabs, concrete or natural stone block steps, interlocking paving blocks, marl and fine crushed gravel.
Trust & reputation

ranQ Trust Score of E. Erny Tiefbau- und Umgebungsarbeiten AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

E. Erny Tiefbau- und Umgebungsarbeiten AG scores 68.9 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.80.624%
  • 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.50.08%
E. Erny Tiefbau- und Umgebungsarbeiten 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%
E. Erny Tiefbau- und Umgebungsarbeiten AG 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%
E. Erny Tiefbau- und Umgebungsarbeiten AG scores 14.3 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 35.14.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

E. Erny Tiefbau- und Umgebungsarbeiten AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 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
5
of 5

Aggregated from 8 reviews across all connected sources

Sources
GGoogle58
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Saarbaumstrasse 6
4415 Lausen
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:00
Tue
07:00 - 12:00, 13:00 - 17:00
Wed
07:00 - 12:00, 13:00 - 17:00
Thu
07:00 - 12:00, 13:00 - 17:00
Fri
07:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-114.754.910
Founded
2009 · 17 years
Last commercial register change
July 10, 2026
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.100.06%
  • 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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