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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryFinance & InsuranceHolding CompaniesLangenthalLandolt Group AG
Landolt Group AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Landolt Group AG provides sewer and surface maintenance services, including sewer and surface cleaning, manhole emptying and recycling, suction works and sludge transport, as well as CCTV inspections and leak testing.

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Offering

Products & services

Industry:Holding Companies
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4.0/5

Landolt Group AG

✓ Offered
4
Sewer cleaning
Flushing work from A to Z for sewer networks, drain unblocking, cleaning of municipal drainage systems, foul water, seepage and stormwater lines, as well as milling of deposits and root intrusion.
Vacuum tank and pit cleaning
Vacuum works with vacuum trucks, shaft recycling, emptying and cleaning of oil separators, sludge collectors, sewage and slurry pits, grease separators and faecal tanks, as well as transport of drilling mud.
CCTV sewer inspection
Maintenance and condition surveys of the sewer network using CCTV sewer vehicles, data capture via computer, investigation reports, damage localisation, as well as acceptance of new builds and a basis for rehabilitation decisions.
Surface cleaning
Road cleaning with high-pressure water for forecourts, pavements, streets and underpasses using a washing bar or lance.
Trust & reputation

ranQ Trust Score of Landolt Group AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Landolt Group AG scores 64.5 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.76.824%
  • 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.58.610%
  • 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.35.08%
Landolt Group AG scores 74.8 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.75.012%
  • 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%
Landolt Group AG 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%
Landolt Group AG scores 34.3 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 35.34.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Landolt Group AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.8 out of 5 stars from 9 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 9 reviews across all connected sources

Sources
GGoogle4.89
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Dennliweg 37
4900 Langenthal
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-250.980.331
Founded
2019 · 7 years
Last commercial register change
May 17, 2022
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.
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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