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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureTimber constructionWollerauOtt Holzbau
Ott Holzbau Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Ott Holzbau is a family-run timber construction and roofing business. Its services include building alterations and extensions, new construction, roof structures and building envelopes, as well as interior work, rental of access platforms and snow clearing.

AI-generated
Presence

Service area

Offering

Products & services

Industry:Timber constructionRoofer
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3.8/5

Ott Holzbau

✓ Offered5
Roofing
Roof truss construction, new-build and extension of roofs, roof windows, tiled and sheet-metal roofs; renovation concepts, thermal insulation calculations, maintenance measures and collaboration with certified energy consultants.
Extensions and conversions
Extensions and conversions, interior fit-out, dormers, panelling on walls and ceilings as well as parquet, laminate and cork parquet for conversions and changes of rooms.
New builds
Pergola, lean-to shelter and carport, conservatory, shed, stable and horse stable; execution of timber construction projects for new builds and agricultural buildings.
Rental of lifting platforms
Rental of lifting platforms up to 28 metres for work at height, with suitable equipment for different applications.
Snow clearing
Ploughing, salting and removal of snow for yards, access roads, streets and forecourts during the winter months.
Trust & reputation

ranQ Trust Score of Ott Holzbau: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of November 2026

Ott Holzbau scores 49.8 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.68.224%
  • 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.17.610%
  • 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.35.08%
Ott Holzbau 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%
Ott Holzbau scores 86.7 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).86.722%
Ott Holzbau scores 11.1 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 35.11.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Ott Holzbau reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Samstagernstrasse 18
8832 Wollerau
Opening hours
Mon
07:00 - 18:00
Tue
07:00 - 18:00
Wed
07:00 - 18:00
Thu
07:00 - 18:00
Fri
07:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-107.652.925
Founded
1999 · 27 years
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • SZWollerau
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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