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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsBaselAltenbach Architekten GmbH
Altenbach Architekten GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Altenbach Architekten GmbH is the planning and realization of architectural projects, including participation in architectural competitions and consulting services for clients. The company offers its services as a general contractor or general planner across all phases of performance, with a focus on combining functional, constructive, social, and building ecological requirements.

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Products & services

Industry:Architecture Firms
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4.0/5

Altenbach Architekten GmbH

Architectural planning
Architectural planning for new builds, conversions and renovations; individual architectural solutions, comprehensive functional and aesthetic concepts, digital visualisations and economic planning.
Overall management and general planning
Overall management and general planning across all service phases; planning, coordination and implementation of projects of varying size and requirements.
Architecture competitions
Participation in architecture competitions for private, institutional and public clients.
Advisory services
Advisory services for clients on architectural matters, project development and implementation decisions.
Trust & reputation

ranQ Trust Score of Altenbach Architekten GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

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Data basis 54% · As of October 2026

Altenbach Architekten 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.
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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%
Altenbach Architekten GmbH scores 72.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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.55.07%
Altenbach Architekten GmbH scores 85.0 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).85.022%
Altenbach Architekten GmbH scores 0.6 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.0.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Altenbach Architekten GmbH reaches a ranQ Trust Score of 4.0 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

Reichensteinerstr. 29
4053 Basel

At a glance

Legal form
Limited Liability Company
UID
CHE-464.443.170
Founded
2019 · 7 years
Last commercial register change
February 7, 2019
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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