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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitectZurichandreas birrer architekten AG
andreas birrer architekten AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The company provides services in the field of real estate consulting and planning. The core activities include: property valuations and appraisals, renovation and refurbishment concepts, project management and owner representation, sustainable and energy-efficient solutions (e.g. Minergie new and renovation buildings), development of material and color concepts, ecological and cost-effective solutions. The company supports clients in the planning, implementation and renovation of real estate and offers comprehensive consulting and project management.

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Service area

Offering

Products & services

Industry:Architect
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4.1/5

andreas birrer architekten AG

✓ Offered4
Architecture
Architecture for residential buildings, school and public buildings, office and commercial buildings as well as conversions, retail fit-outs and extensions; planning, development of concepts and detail solutions, budget-compliant design.
Energy consulting
Consulting for new builds and conversions with Minergie experience; analysis of additional costs, sustainable and optimised solutions, and work as an energy coach for renovation and conversion projects.
Client representation and project management
Representation of clients’ concerns in project management work, in particular in retail fit-out; ensuring quality and implementation of the concept.
Consulting for property acquisition and property valuations
Support during the acquisition of properties, property valuations and assessment of conversion costs as a basis for decision-making for purchase or non-purchase.
Trust & reputation

ranQ Trust Score of andreas birrer architekten AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

andreas birrer architekten 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.
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%
andreas birrer architekten AG scores 85.5 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.55.07%
andreas birrer architekten 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%
andreas birrer architekten AG scores 0.6 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 35.0.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

andreas birrer architekten 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 November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Eisgasse 6
8004 Zurich

At a glance

Legal form
Corporation
UID
CHE-109.611.274
Founded
2002 · 24 years
Last commercial register change
October 31, 2013
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • ZHZurich
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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