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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryFinance & InsuranceHolding CompaniesGossau SgB3 Gruppe AG
B3 Gruppe AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

B3 Gruppe AG is an engineering and planning firm providing services for building and infrastructure projects and construction process management. Services include civil and transport engineering, hydraulic works, bridges and special foundations, structural timber, concrete and steel design, fire protection, general planning, construction management, digital/BIM workflows, sustainability measures, and expert consulting.

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Products & services

Industry:Holding Companies
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B3 Gruppe AG

✓ Offered
8
General planning
Planning services and project management from a single source for interdisciplinary general planning projects, from the study stage to commissioning, including economical and sustainable project delivery.
Construction management
Project and construction planning, schedule, cost and quality control, risk management, contract management, site supervision, as well as approvals and commissioning in building and civil engineering works.
Civil engineering and traffic infrastructure construction
Traffic route construction, town-centre design projects, municipal drainage, GEP, bridge and footbridge construction, rail construction, site development and access, utility line construction, as well as noise barriers and earth berms.
Hydraulic engineering
Analysis, river and stream planning, renovation and expansion, flood protection, river corridor management, numerical modelling, renaturalisation and watercourse maintenance concepts.
Timber construction
Timber engineering services, structural design, static/structural concepts, workshop and execution planning, design competitions, feasibility studies, component and assembly planning, as well as BIM-supported planning.
Fire protection
Fire protection consulting, fire protection concepts, fire safety plans, property-specific assessments, negotiations with authorities, fire resistance documentation, quality assurance, statements and expert reports.
Digital construction
BIM planning, digital construction, VDC, integrated collaboration, BIM to Field and BIM consulting for planning, execution and project coordination.
Expertise and consulting
Support for and representation of the client, BIM consulting, senior site supervision, as well as expert opinions/reports on traffic noise, ideas, structures, existing-condition surveys, crack reports and expert mandates.
Trust & reputation

ranQ Trust Score of B3 Gruppe AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

B3 Gruppe 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%
B3 Gruppe AG scores 81.6 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.75.012%
  • 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%
B3 Gruppe AG 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%
B3 Gruppe AG scores 82.9 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: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

B3 Gruppe 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 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.

Knowledge

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Location

IIgenstrasse 7
9200 Gossau Sg

At a glance

Legal form
Corporation
UID
CHE-274.657.211
Founded
2019 · 7 years
Last commercial register change
May 26, 2025
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.70.03%
    • Full methodology

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