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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsAarauFischer.Peterhans Architekten ETH SIA GmbH
Fischer.Peterhans Architekten ETH SIA GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Fischer.Peterhans GmbH is the provision of architectural services.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered7
Architectural services
Covering all service phases according to SIA 102, from concept and feasibility studies through preliminary and construction project planning to tender and execution planning, construction management and cost control.
Urban planning studies and study mandates
Development of concept and feasibility studies, handling of study mandates and competitions, as well as urban planning studies for different requirements and scales.
Competition organisation
Organisation and support of competitions and planner selection procedures, including competition organisation for construction projects and public initiatives.
Alterations and renovations
Planning and handling of alterations, renovations, facade restorations, energy-efficient renovations, and change of use of residential, commercial and existing buildings.
New-build projects
Planning and implementation of new-builds such as residential houses, multi-family homes, residential complexes, kindergartens and office buildings.
Residential construction
Planning of single-family houses, multi-family homes, terraced houses, housing developments and multi-generation homes.
Buildings for public and semi-public uses
Planning for kindergartens, schools, social service facilities, care homes and other public or community building projects.
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4.1/5

Fischer.Peterhans Architekten ETH SIA GmbH

Trust & reputation

ranQ Trust Score of Fischer.Peterhans Architekten ETH SIA 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.

Fischer.Peterhans Architekten ETH SIA 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.
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%
Fischer.Peterhans Architekten ETH SIA GmbH scores 83.0 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%
Fischer.Peterhans Architekten ETH SIA GmbH scores 83.3 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).83.322%
Fischer.Peterhans Architekten ETH SIA GmbH scores 2.9 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 35.2.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Fischer.Peterhans Architekten ETH SIA 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

Golattenmattgasse 1A
5000 Aarau

At a glance

Legal form
Limited Liability Company
UID
CHE-111.780.041
Founded
2004 · 22 years
Last commercial register change
January 20, 2023
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.88.06%
  • 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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