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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureInterior ConstructionWisen SoBITTERLI'S Holzbau & Bedachungen GmbH
BITTERLI'S Holzbau & Bedachungen GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Bitterlis Holzbau und Bedachungen encompasses the planning, execution, and maintenance of carpentry, roofing, and sheet metal work, including: carpentry and timber construction, prefabricated construction, roofing (pitched roofs, facades, skylights), thermal insulation of roofs and facades, roof renovation, maintenance, and repair, interior finishing, carport and garden house construction, wooden floor installation (indoor and outdoor), and building permit and energy certificate services. The company thus offers comprehensive services in the field of timber construction and roofing.

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Products & services

Industry:Interior ConstructionTimber Construction & Carpentry
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BITTERLI'S Holzbau & Bedachungen GmbH

Roofing
✓ Offered12
Carpentry, Timber Construction & Element Building
CAD planning for roof trusses, timber construction and element building; on-site measurement, timber framing and erection for roof trusses, carports and garden houses, including timber frame construction with wall, ceiling and floor elements.
Pitched Roof Roofing
Roof covering of pitched roofs with clay tiles, Prefa or Eternit; new builds, comprehensive renovations and smaller modifications with energy efficiency and budget in mind.
Roof Renovation
Complete roof renovations with dismantling down to the beams, new build with materials and dormers, improvements for energy savings, and cantonal funding.
Facades
Timber facades in covering, vertical (standing) or concealed construction; installation of prefabricated facade timbers as well as facades with wood insulation boards and render/plaster.
Thermal Insulation for Roof & Facade
Insulation of floors, walls, ceilings, roofs and facades from inside or outside with glass wool, stone wool, wood fibre, sheep’s wool, hemp or cellulose; including funding.
Roof Windows
Installation and renovation of roof windows, including Velux, electric or solar-powered units; with sun, light and heat protection such as roller blinds, exterior roller shutters and markisettes.
Roof Maintenance & Roof Repair
Periodic roof inspections, one-off maintenance and cleaning, repair of storm and hail damage, and repairs to prevent subsequent damage.
Interior Fit-Out
Interior fit-out and conversions with timber, drywall, galleries and solutions for reusing older buildings; ceiling and wall coverings and partition walls.
Carport & Garden House
Design and construction of carports and garden houses made of timber, based on measurements and customer requirements.
Timber Flooring for Inside & Outside
Timber floors for indoor areas and terraces; planning, installation, care, sanding and surface treatment with oil, wax or lacquer.
Dormer Windows
Planning and installation of dormer windows to bring in light and enlarge the attic floor, also as part of roof renovations.
Building Permit Application & Energy Certification
Building design, submission of building permit applications and preparation of energy certifications in connection with energy-efficient renovations and funding.
Trust & reputation

ranQ Trust Score of BITTERLI'S Holzbau & Bedachungen GmbH: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

BITTERLI'S Holzbau & Bedachungen GmbH scores 72.7 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.80.624%
  • 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.55.910%
  • 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.70.08%
BITTERLI'S Holzbau & Bedachungen 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%
BITTERLI'S Holzbau & Bedachungen 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%
BITTERLI'S Holzbau & Bedachungen GmbH scores 2.3 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 35.2.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

BITTERLI'S Holzbau & Bedachungen GmbH reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 8 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 8 reviews across all connected sources

Sources
GGoogle58
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Ausserdorfstrasse 33
4634 Wisen So
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 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-114.933.105
Founded
2009 · 17 years
Last commercial register change
November 29, 2022
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.88.06%
  • 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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