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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureConstruction managerAmstegLambdaplan GmbH
Lambdaplan GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Lambdaplan GmbH provides construction and renovation planning, construction management, energy consulting and building diagnostics. Its services include GEAK assessments, hazardous-material and mould analyses, and evaluations of building condition.

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Presence

Service area

Offering

Products & services

Industry:Construction manager
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4.1/5

Lambdaplan GmbH

Energy consulting
✓ Offered3
Construction management and renovation planning
Construction management for renovations, refurbishments and new builds, including cost estimates, schedule planning, detailed design, measuring the building and preparing plans, as well as 3D floor plan planning.
Energy consulting
Energy consulting, energy analysis of buildings and guidance on how to proceed, advice on funding programmes, preparation of building energy certificates GEAK and energy proofs for building applications.
Contaminant and building analyses
Testing and analysis of asbestos, PCB and PAH, mould investigation, building condition analyses, as well as property analyses for real estate purchases including an assessment of remediation costs and conversion potential.
Trust & reputation

ranQ Trust Score of Lambdaplan GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of November 2026

Lambdaplan GmbH scores 88.9 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.89.724%
  • 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.81.910%
  • 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.95.08%
Lambdaplan GmbH scores 57.1 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.39.612%
  • 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%
Lambdaplan GmbH 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%
Lambdaplan GmbH scores 2.6 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 35.2.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Lambdaplan GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 24 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 24 reviews across all connected sources

Sources
GGoogle524
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Grund 57
6474 Amsteg
Opening hours
Mon
07:00 - 18:00
Tue
07:00 - 18:00
Wed
07:00 - 18:00
Thu
07:00 - 18:00
Fri
07:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-253.864.158
Founded
2024 · 2 years
Last commercial register change
December 2, 2024
Employees
1 to 10

Active in 6 of 26 cantons

  • Central Switzerland
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.
88.0
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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