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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureTimber constructionLömmenschwilLehmann Bauservice GmbH
Lehmann Bauservice GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Lehmann Bauservice GmbH provides advice, planning, supply and installation of windows and doors, along with maintenance and repair services. Its services also include insect and sun protection, construction and project management, and renovation, dismantling and disposal work.

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Service area

Offering

Products & services

Industry:Timber constructionCarpenter
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4.1/5

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: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

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.
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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 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Lehmann Bauservice GmbH scores 0.3 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 35.0.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Lehmann Bauservice GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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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

Active in 1 of 26 cantons · 1 municipality

  • SGHäggenschwil
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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