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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionFrickWunder Bau GmbH
Wunder Bau GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Wunder Bau GmbH encompasses the planning, execution, and realization of construction projects, including: * Building services (heating, plumbing, air conditioning) * Electrical installations (electrical systems, photovoltaics, smart home) * Renewable energies (photovoltaics, solar systems) * Renovation and refurbishment of buildings (bathroom and kitchen renovations, complete house renovations) * General contracting (all services of the main construction industry) The company thus offers comprehensive services in the construction sector, from planning to execution, and focuses on the needs of its customers in the areas of living and working.

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Offering

Products & services

Industry:Building Construction
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3.9/5

Wunder Bau GmbH

Civil Engineering
General Contractors
✓ Offered6
Heating engineering
Heating engineering for repairs, extensions, planning and execution of large installations in conversions and new builds.
Sanitary engineering
Sanitary engineering for bathrooms, kitchens and water installations, including sanitary work with modern techniques and clean water supply in the building.
Electrical installations / Smart Home
Electrical installations and Smart Home systems for simple and complex projects, with consulting, resource planning and collaboration with partners.
Renewable energy
Photovoltaic and solar systems as well as customer-specific energy solutions, implemented on fair terms.
Refrigeration and ventilation engineering
Refrigeration and ventilation engineering for indoor climate in residential and working spaces.
Renovations and conversions
Renovations, conversions and refurbishments including bathroom and kitchen renovations, whole-house renovations, building protection, building services and remediation of pollutants.
Trust & reputation

ranQ Trust Score of Wunder Bau GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

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Data basis 54% · As of October 2026

Wunder Bau GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Wunder Bau GmbH scores 67.8 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.64.612%
  • 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.55.07%
Wunder Bau GmbH 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%
Wunder Bau GmbH scores 1.1 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 35.1.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Wunder Bau GmbH reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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Location

Hauptstrasse 45
5070 Frick

At a glance

Legal form
Limited Liability Company
UID
CHE-317.969.448
Founded
2021 · 5 years
Last commercial register change
September 22, 2023
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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