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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureTimber Construction & CarpentryZollikonHeinz Schiesser GmbH
Heinz Schiesser GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Heinz Schiesser GmbH is carpentry and timber construction, particularly the planning and execution of: roof extensions, new buildings, wooden ceilings, wooden facades, insulation and thermal insulation, dormer windows, parquet floors, repairs, and terrace grates and decking. The company offers individual solutions and services in the field of timber construction and carpentry.

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Products & services

Industry:Timber Construction & Carpentry
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4.0/5

Heinz Schiesser GmbH

10
New builds
New builds in timber construction and carpentry, designed flexibly around individual requirements; planning and execution for new residential and building projects.
Attic conversions
Attic conversions to extend living space, with individual requirements and solutions for converting existing attic floors.
Roof windows
Roof window solutions including heat protection, configuration and installation of Velux roof windows for attic rooms.
Insulation / thermal insulation
Insulation of attic spaces and timber buildings of all kinds, to reduce heating costs and to protect the property in the long term.
Repairs
Repairs and restoration of timber works, refurbishment of older houses and timber elements in keeping with their style.
Wooden ceilings
Wooden ceilings for interior spaces, with processing and installation as a permanent floor or ceiling structure in timber construction.
Terrace decking / deck boards
Wooden terrace grating and terrace decks, for outdoor areas and the construction of wooden terraces.
Wood facades
Wood facades for building envelopes and exterior cladding in timber construction, listed as a separate service area.
Dormers
Dormers in the roof area, implemented as part of attic conversions and timber construction works.
Parquet flooring
Parquet flooring as floor finishes for living spaces, with advice and installation as part of the timber construction offering.
Trust & reputation

ranQ Trust Score of Heinz Schiesser GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Heinz Schiesser GmbH scores 65.1 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.63.324%
  • 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.45.610%
  • 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.95.08%
Heinz Schiesser 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%
Heinz Schiesser GmbH scores 85.0 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).85.022%
Heinz Schiesser GmbH scores 1.7 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 35.1.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Heinz Schiesser GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.2 out of 5 stars from 5 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
4.2
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle4.25
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Gustav-Maurer-Strasse
8702 Zollikon
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 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-107.169.617
Founded
1997 · 29 years
Last commercial register change
January 11, 2021
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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