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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureTimber Construction & CarpentryLömmenschwilLehmann Bauservice GmbH
Lehmann Bauservice GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Lehmann Bauservice GmbH encompasses consulting, planning, sales, installation, service and repair of windows, doors and accessories, including shading and insect protection solutions. The company offers individual solutions for private individuals, SMEs and municipalities, and acts as a general contractor for interior construction, renovation and conversions.

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Products & services

Industry:Timber Construction & CarpentryJoinery
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Lehmann Bauservice GmbH

✓ Offered4
Windows & Doors
Supply, installation, dismantling and servicing of windows, balcony doors, sliding doors and entrance doors; maintenance, repairs, glass-break and break-in repairs, and replacement of fittings and panes.
Insect protection
Custom insect protection for windows and doors; fly screens, solutions for hinged frames, swing doors, sliding doors, pleated blinds and electric roller shutters.
Construction and project management
Client representation, preparation and assessment of studies, end-to-end project execution, and cost and schedule controlling for new-build, renovation and modernization projects.
Renovation / deconstruction and disposal
Turnkey conversion, deconstruction and renovation work with professional execution, disposal, and, if required, involvement of other trades or companies.
Trust & reputation

ranQ Trust Score of Lehmann Bauservice GmbH

Trust Score

No score yet

x

A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity. Missing evidence: Review quality, Review volume, Review recency, Media authority

Data basis 54% · As of October 2026

Lehmann Bauservice GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Lehmann Bauservice GmbH scores 83.0 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.55.07%
Lehmann Bauservice GmbH scores 83.3 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).83.322%
Lehmann Bauservice GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%

The data basis is 54%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Media authority. As of October 2026.

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

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Location

Romanshornerstrasse 6
9308 Lömmenschwil

At a glance

Legal form
Limited Liability Company
UID
CHE-210.024.641
Founded
2011 · 15 years
Last commercial register change
March 25, 2024
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.
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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