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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsBiel/Bienneoeko-arch GmbH
oeko-arch GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of oeko-arch GmbH is the planning and implementation of energy-efficient and building-biological construction projects, particularly in the field of architecture.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered6
Architecture
Architecture for new builds, conversions and renovations; planned in a resource-efficient way for optimal living conditions and long-term operation.
Building biology
Building-biology planning with health-promoting building materials and structures, produced and processed locally wherever possible, environmentally friendly and returnable to the natural cycle.
Energy efficiency
Energy-efficient planning for new builds and existing buildings; new buildings as energy producers, existing structures with an improved total energy balance.
Energy retrofitting
Energy retrofitting of single-family houses and residential buildings, partly with solar roofs; improving the energy balance in the existing stock.
Conversion and modernisation
Conversion and modernisation of single-family houses, multi-family houses and residential buildings, including extensions, roof conversions and use as a two-unit house.
GEAK expertise
GEAK expertise for buildings, including an energy assessment and support to improve the energy balance.
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4.1/5

oeko-arch GmbH

Trust & reputation

ranQ Trust Score of oeko-arch GmbH: 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.

oeko-arch 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%
oeko-arch GmbH scores 83.0 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.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.55.07%
oeko-arch 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%
oeko-arch GmbH scores 65.7 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 35.65.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

oeko-arch GmbH 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.

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Location

Tiefenmattweg 29
2503 Biel/Bienne

At a glance

Legal form
Limited Liability Company
UID
CHE-149.138.829
Founded
2011 · 15 years
Last commercial register change
July 29, 2025
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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