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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil worksSteinenSchönberger Bau AG
Schönberger Bau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Schönberger Bau AG provides construction services including project planning, renovations and remodeling, construction management, and execution of trades such as plastering, masonry and floor coverings.

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Presence

Service area

Offering

Products & services

Industry:Civil works
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3.9/5

Schönberger Bau AG

General contractor
✓ Offered12
Construction planning
Construction planning for new builds, renovations and conversions, including architecture, construction consulting, construction management, CAD services and coordination with authorities and specialist planners.
Construction execution
Construction execution with site management, masonry work, plastering work, stucco work, floor coverings, ceramic and natural stone coverings, as well as balcony and terrace refurbishments.
Renovation / conversion / damage remediation
Renovation, conversion and damage remediation for existing properties, from smaller conversions to comprehensive planning and execution.
New construction
Planning for new builds with comprehensive support from the initial idea through to implementation.
Construction consulting
Advice on construction projects, in particular for renovations, conversions and comprehensive solutions.
Construction management
Coordination of projects, authorities, specialist planners and contractors within the scope of construction planning.
Architecture
Architectural services as part of construction planning for new builds, renovations and conversions.
CAD services
CAD services for planning and drafting building projects.
Sustainable construction
Sustainable construction with solutions that meet social, economic and ecological requirements.
Site management
Site management for steering and supervising construction projects during execution.
Plastering work
Plastering work for construction and conversion projects.
Masonry work
Masonry work for new-build, conversion and renovation projects.
Trust & reputation

ranQ Trust Score of Schönberger Bau AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of November 2026

Schönberger Bau AG scores 69.3 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.83.324%
  • 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.63.210%
  • 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%
Schönberger Bau AG scores 66.4 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.39.612%
  • 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.82.07%
Schönberger Bau AG 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%
Schönberger Bau AG scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Schönberger Bau AG 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 11 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 11 reviews across all connected sources

Sources
GGoogle511
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Breitenstrasse 31
6422 Steinen
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
Corporation
UID
CHE-173.750.020
Founded
2024 · 2 years
Last commercial register change
February 14, 2024
Employees
21 to 50

Active in 1 of 26 cantons

  • SZSchwyz
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.
100.0
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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