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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionSuhrGrundmann Bau AG
Grundmann Bau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Grundmann Bau AG is a construction company offering services in building construction, civil engineering, renovations and hazardous-material remediation, and it develops real estate projects. The company acts as a total or general contractor for project realisation, sells and rents properties it develops, and maintains certified quality and environmental management systems (ISO 9001, ISO 14001).

AI-generated
Offering

Products & services

Industry:Building Construction
✓ Offered9
Building construction
Building construction for residential and commercial spaces, from new builds to demanding construction projects with solid craftsmanship and many years of experience.
Civil engineering
Civil engineering including utility lines, sewer systems and excavation pits, carried out with detailed planning and expertise for construction projects of any size.
Alterations and renovation
Alterations, extensions, renovation, remediation and maintenance, as well as a client bricklayer service for small and larger construction projects.
Hazardous material remediation
Hazardous material remediation for asbestos and other construction pollutants, from analysis to remediation and project support.
Construction logistics
Construction logistics with 5-axle trucks, crane operations, skip service, silo deliveries and covered flatbed transports for job sites and material transports.
Real estate development
Development of plots and properties with needs analyses, strategic planning and a sustainable focus for residential and commercial spaces.
Real estate construction
Real estate construction of owner-occupied apartments, rental apartments, single-family houses and commercial buildings as a total or general contractor.
Sale of real estate
Sale of owner-occupied apartments, rental apartments, single-family houses and commercial premises that have been developed and constructed in-house.
Rental of real estate
Rental of apartments, office and commercial premises for different needs and requirements.
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4.1/5

Grundmann Bau AG

Trust & reputation

ranQ Trust Score of Grundmann Bau AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 58% · As of October 2026

Without public customer reviews the score stays capped.

Grundmann Bau AG 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.
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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%
Grundmann Bau AG scores 93.9 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.82.07%
Grundmann 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%
Grundmann Bau AG scores 46.5 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 35.82.94%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.10.04%
Qualifications+0.00

Grundmann Bau AG reaches a ranQ Trust Score of 4.1 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 58%, 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.

Press

Media

December 5, 2020Media
Seit 90 Jahren in Familienhand: Sichtbeton ist Familiensache
aargauerzeitung.ch

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Location

Wynenfeldstrasse 10
5034 Suhr
Opening hours
Mon
08:00 - 12:00, 13:30 - 18:00
Tue
08:00 - 12:00, 13:30 - 18:00
Wed
08:00 - 12:00, 13:30 - 18:00
Thu
08:00 - 12:00, 13:30 - 18:00
Fri
08:00 - 12:00, 13:30 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-112.421.521
Founded
2005 · 21 years
Last commercial register change
July 1, 2026
Employees
21 to 50
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.85.03%
    • Full methodology

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