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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsWil Sga2architekten.ch Christoph Stauffer
a2architekten.ch Christoph Stauffer Logo
Verified· 3 sourcesTrust Score
Summary

About the company

a2architekten.ch Christoph Stauffer is an architectural practice that designs and delivers projects in the residential, educational and commercial sectors. The practice covers all project phases from preliminary sketches to handover, including tendering, contract and cost management, and site supervision, and cooperates with specialist consultants and project partners.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered5
Architectural planning
Architecture from the first sketches of the preliminary project to handover of the keys, including ideas, planning, tenders, contract and cost management, as well as on-site construction management.
Construction management
On-site construction management, coordination of implementation, monitoring of quality on site and support through to handover.
Conversion and renovation
Conversions, renovations and façade restorations of residential buildings, school buildings, historic properties and other existing structures.
New residential construction
New-build projects for multi-family and single-family houses, including replacement builds and planning of residential developments.
Buildings for public and institutional users
Planning and conversion of school buildings, a land registry office, a free church, an elderly care centre and a residential home.
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3.8/5

a2architekten.ch Christoph Stauffer

Trust & reputation

ranQ Trust Score of a2architekten.ch Christoph Stauffer: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

a2architekten.ch Christoph Stauffer scores 53.9 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.60.724%
  • 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.40.910%
  • 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.50.08%
a2architekten.ch Christoph Stauffer scores 75.3 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.92.512%
  • 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%
a2architekten.ch Christoph Stauffer 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%
a2architekten.ch Christoph Stauffer scores 1.7 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 35.1.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

a2architekten.ch Christoph Stauffer reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 4.0 out of 5 stars from 4 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
4
of 5

Aggregated from 4 reviews across all connected sources

Sources
GGoogle44
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Wilbergstrasse 9
9500 Wil Sg
Opening hours
Mon
08:00 - 12:00, 13:30 - 17:00
Tue
08:00 - 12:00, 13:30 - 17:00
Wed
08:00 - 12:00, 13:30 - 17:00
Thu
08:00 - 12:00, 13:30 - 17:00
Fri
08:00 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-109.512.577
Founded
2014 · 12 years
Last commercial register change
June 16, 2014
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.67.06%
  • 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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