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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsWinterthurArchitektengruppe 4 GmbH
Architektengruppe 4 GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Architektengruppe 4 GmbH provides architectural planning and project design services for residential and public buildings, including single-family houses, multi-family housing, settlements and conversions. Its specialist areas include interior architecture, monument preservation, lighting design, energy solutions (Minergie) and consulting.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered6
Architecture
New builds, additions and conversions, renovations and changes of use for single-family houses, multi-family houses, settlements and public uses.
Minergie specialist planning
Minergie specialist planning for new builds and conversions; certified Minergie specialist planner since spring 2008, with reference to GEAK and sustainable building.
Interior design
Interior design for buildings, with selection and design of materials, form language, colour and light, aligned with users’ needs and spatial experiences.
Lighting concepts
Lighting concepts and their implementation for buildings, indoor spaces and outdoor areas; as part of architectural assignments or as stand-alone projects.
Real-estate advisory
Advisory for purchasing properties regarding buildability, expansion potential, need for renewal, energy-efficient refurbishment and possible resale value.
Heritage preservation
Planning and support in dealing with heritage-protected building fabric and in the transformation into modern living spaces, coordinated with authorities and clients.
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4.2/5

Architektengruppe 4 GmbH

Trust & reputation

ranQ Trust Score of Architektengruppe 4 GmbH: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Architektengruppe 4 GmbH scores 71.3 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.78.124%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.49.510%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.78.08%
Architektengruppe 4 GmbH scores 86.7 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.70.07%
Architektengruppe 4 GmbH 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%
Architektengruppe 4 GmbH scores 37.1 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 35.37.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Architektengruppe 4 GmbH reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 6 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 6 reviews across all connected sources

Sources
GGoogle56
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Frauenfelderstrasse 75
8404 Winterthur

At a glance

Legal form
Limited Liability Company
UID
CHE-108.816.081
Founded
1994 · 32 years
Last commercial register change
May 25, 2021
Employees
11 to 20
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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