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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitectBaselA04 AG
A04 AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

A04 AG plans and delivers interior design and spatial concepts for private and public spaces. The company advises on furnishing solutions and offers designer furniture, textiles, lighting, accessories and kitchens.

AI-generated
Presence

Service area

Offering

Products & services

Industry:Architect
✓ Offered
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4.4/5

A04 AG

2
Interior design
Interior design and space concepts for private and public areas, from concept planning through to execution; with advice, material, colour and form concepts, as well as design furniture.
Furniture
Design furniture and furnishing collections, including from well-known manufacturers and brands; as a complement to interior design projects and for styled interiors.
Trust & reputation

ranQ Trust Score of A04 AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of November 2026

A04 AG scores 80.3 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.84.124%
  • 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.65.210%
  • 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.88.08%
A04 AG scores 83.5 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.95.212%
  • 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%
A04 AG scores 86.7 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).86.722%
A04 AG scores 51.4 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 35.51.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

A04 AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 12 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 12 reviews across all connected sources

Sources
GGoogle512
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Margarethenstrasse 63
4053 Basel
Opening hours
Mon
10:00 - 12:00, 13:00 - 18:00
Tue
10:00 - 12:00, 13:00 - 18:00
Wed
10:00 - 12:00, 13:00 - 18:00
Thu
10:00 - 12:00, 13:00 - 18:00
Fri
10:00 - 12:00, 13:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-438.668.042
Founded
2013 · 13 years
Last commercial register change
November 4, 2022
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • BSBasel
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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