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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,888 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil EngineeringMeiringenGhelma AG Spezialtiefbau
Ghelma AG Spezialtiefbau Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of Ghelma AG Spezialtiefbau encompasses the planning and execution of special deep foundation projects, including: * excavation pit securing (nailing walls, raking walls, pile walls, tie-backs) * pile foundations (in-situ concrete piles, displacement piles, micro-piles) * special drilling (filter wells, drainage drilling, contaminated site remediation, exploratory drilling) * protective structures (rockfall protection, landslide protection, rock face securing, flood protection, protective scaffolding) * embankment stabilization (jet grouting, high-pressure injections, low-pressure injections) The company offers innovative and customized solutions for complex construction projects and has its own research and development department as well as a workshop for the manufacture of specialized equipment.

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Products & services

Industry:Civil Engineering
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Ghelma AG Spezialtiefbau

Site Preparation
✓ Offered8
Excavation shoring
Excavation pit closures with nail walls, Rühl walls, pile walls and back anchors, as well as systems GSTB-MPS, GSTB-VNM and GSTB-KOU.
Pile foundations
Pile foundations for structures with cast-in-place concrete piles, displacement bored piles, micropiles, system GSTB-NDJ and bench stabilization.
Jet grouting
Soil improvement with high-pressure injections (HDI) and low-pressure injections (NDI) to adapt to the geology and the purpose of the grouted body.
Special boreholes
Special boreholes for filter wells, drainage boreholes and remediation of contaminated sites, as well as installations for subsurface monitoring and excavation monitoring.
Exploratory boreholes
Exploratory boreholes for ground investigation with SPT tests, borehole cores and geological fundamentals for geotechnical structures.
Protective structures
Protective structures against mudflows, rockfall and flooding, as well as rock securing and protective scaffolding for exposed structures.
Engineering
Engineering for specialized deep construction with planning, development of contractor options and project-specific solutions from a single source.
Research & Development
Research and development for specialized equipment and systems, partly with own design and production in the workshop yard.
Trust & reputation

ranQ Trust Score of Ghelma AG Spezialtiefbau: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 100% · As of October 2026

Ghelma AG Spezialtiefbau scores 74.7 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.79.424%
  • 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.52.910%
  • 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%
Ghelma AG Spezialtiefbau scores 95.8 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.96.07%
Ghelma AG Spezialtiefbau scores 86.7 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).86.722%
Ghelma AG Spezialtiefbau scores 36.5 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 35.62.94%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.10.04%
Qualifications+0.00

Ghelma AG Spezialtiefbau reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 7 customer reviews. 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 7 reviews across all connected sources

Sources
GGoogle57
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

May 25, 2016Media
Meilenstein für Familienbetrieb
bernerzeitung.ch

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Location

Sandstrasse 10
3860 Meiringen
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-112.122.171
Founded
2004 · 22 years
Last commercial register change
July 30, 2025
Employees
101 to 500
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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