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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringLucerneKeller + Lorenz AG
Keller + Lorenz AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Keller + Lorenz AG is an independent consultancy for applied geology, geotechnical engineering and hydrogeology. The firm provides expert reports and 2D/3D geological models, construction supervision, monitoring and measurement concepts, risk analyses, and remediation or stabilization projects.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered7
Geotechnics
Ground investigations, earthwork and rock mechanics calculations, stability and settlement assessments, foundation and excavation concepts, excavation support, geotechnical construction supervision.
Geology
Geological mapping and field investigations, data collection and documentation of boreholes and geothermal probes, digital processing, subsurface modelling, geophysical interpretations, 2D and 3D models.
Hydrogeology
Hydrogeological studies, groundwater exploration and modelling, prospecting and development of groundwater resources, groundwater management, protection concepts, monitoring and drainage concepts.
Natural hazards
Initial assessments, crisis management and immediate measures, hazard mapping and risk analyses, protection concepts and protective structures, monitoring concepts, rockfall simulations and slope stability calculations.
Environmental geology
Site evaluation and aftercare of landfills, contaminated site investigations, load models, assessment of contaminant potential and spread, excavation investigations, containment and remediation concepts.
Renewable energies: geothermal energy / groundwater
Geothermal forecasts, calculations and simulations, consulting for thermal groundwater use and geothermal applications, support for filter wells and geothermal probes / fields.
Analyses, consulting, expert reports
Risk analyses, BIM geodata provision, project management consulting, site selection and alternative studies, monitoring concepts, groundwater monitoring, geomeasurement technology and expert reports.
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3.9/5

Keller + Lorenz AG

Trust & reputation

ranQ Trust Score of Keller + Lorenz AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Keller + Lorenz AG scores 53.8 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.70.824%
  • 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.27.910%
  • 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%
Keller + Lorenz 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%
Keller + Lorenz 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%
Keller + Lorenz AG scores 9.4 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 35.9.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Keller + Lorenz AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 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 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Tribschenstrasse 61
6005 Lucerne
Opening hours
Mon
07:30 - 17:00
Tue
07:30 - 17:00
Wed
07:30 - 17:00
Thu
07:30 - 17:00
Fri
07:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.273.321
Founded
1984 · 42 years
Last commercial register change
September 12, 2024
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.
100.0
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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