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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesMetal ConstructionLaupersdorfBrunner Polybau GmbH
Brunner Polybau GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Brunner Polybau GmbH is the planning, manufacture and installation of various building elements and systems, particularly: winter gardens and balcony glazing, pergolas and awnings, exterior and interior shading systems, insect protection systems, and metal construction. The company also provides comprehensive services, from consulting to planning, execution and completion of construction projects.

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Products & services

Industry:Metal Construction
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4.1/5

Brunner Polybau GmbH

✓ Offered
7
Winter gardens
Winter gardens custom-made, including retractable versions, with glazing and shading; focus on individually made solutions for weather-protected seating and outdoor areas.
Glazing
Glazing for balcony, terrace, seating area and interior spaces; including sliding glazing, all-glass sliding systems, cover systems and partially insulated solutions.
Pergolas
Custom pergolas and terrace coverings, with weather-resistant protection, shading and optional accessories for outdoor areas.
Outdoor shading
Outdoor shading with awnings and weather-resistant solutions for terraces, glass roofs and outdoor areas; custom-tailored for different situations.
Metal construction
Custom metal construction for balconies, railings, staircases, glass roofs, carports and other steel, stainless-steel and aluminium structures.
Indoor shading
Indoor shading with plissees, roller blinds, curtain systems and other made-to-measure shading solutions for windows and winter gardens.
Insect protection
Custom insect protection for windows and doors, including tension frames, insect screens with roller blinds, swing and sliding doors, as well as lightwell covers.
Trust & reputation

ranQ Trust Score of Brunner Polybau GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 96% · As of October 2026

Brunner Polybau GmbH scores 80.1 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.85.424%
  • 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.68.910%
  • 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.78.08%
Brunner Polybau GmbH scores 65.3 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.50.012%
  • 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%
Brunner Polybau 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%
Brunner Polybau GmbH scores 37.1 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.37.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Brunner Polybau 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 14 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 14 reviews across all connected sources

Sources
GGoogle514
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Untere Brühlmatt 740
4712 Laupersdorf
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 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-437.450.960
Founded
2023 · 3 years
Last commercial register change
February 28, 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.
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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