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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureTimber Construction & CarpentryKirchleerauBrunner Zimmerei + Treppenbau
Brunner Zimmerei + Treppenbau Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Brunner Zimmerei und Treppenbau is the planning and realization of timber construction projects, particularly in the areas of carpentry and staircase construction. This includes the creation of plans and visualizations, the implementation of new buildings, conversions, winter gardens, carports and terrace roofs, as well as the manufacture of stairs and wooden facades.

AI-generated
Offering

Products & services

Industry:Timber Construction & Carpentry
✓ Offered6
Timber construction
Roof structures, roof extensions, carports and sheds, timber stud wall constructions, renovations of existing buildings, prefabricated element construction, storey additions, platforms and privacy screens.
Stair construction
Winding stairs, outdoor stairs, top-mounted stairs, log stairs, wood-and-metal stairs, and mortised oak stairs.
Roofing
Inspection and repair of existing roofs, renovation of old pitched roofs made of tiles or Eternit, installation of new pitched roofs, dormers.
Winter gardens
Winter gardens, living room extensions and covered entrances as timber construction solutions for additional living space.
Floor coverings
Oak parquet floors, bamboo parquet and laminate with stone decor.
Interior fit-out
Interior fit-out with parquet, room dividers and other wood solutions indoors.
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3.9/5

Brunner Zimmerei + Treppenbau

Trust & reputation

ranQ Trust Score of Brunner Zimmerei + Treppenbau: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Brunner Zimmerei + Treppenbau scores 59.3 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.75.024%
  • 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.40.910%
  • 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%
Brunner Zimmerei + Treppenbau scores 78.5 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%
Brunner Zimmerei + Treppenbau scores 83.3 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).83.322%
Brunner Zimmerei + Treppenbau scores 6.3 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 35.6.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Brunner Zimmerei + Treppenbau 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 4 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 4 reviews across all connected sources

Sources
GGoogle54
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Grundstrasse 256
5054 Kirchleerau
Opening hours
Mon
07:00 - 12:00, 13:15 - 17:30
Tue
07:00 - 12:00, 13:15 - 17:30
Wed
07:00 - 12:00, 13:15 - 17:30
Thu
07:00 - 12:00, 13:15 - 17:30
Fri
07:00 - 12:00, 13:15 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-113.385.520
Founded
2007 · 19 years
Last commercial register change
January 25, 2007
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.
67.0
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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