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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitectViganelloGIEFFE STUDIO SAGL
GIEFFE STUDIO SAGL Logo
Verified· 3 sourcesTrust Score
Summary

About the company

GIEFFE STUDIO SAGL is an architecture and real estate company that plans and delivers construction projects. Its services include architectural design, project and construction management, new builds, conversions and renovations, as well as real estate consulting, brokerage and management.

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GIEFFE STUDIO SAGL

Presence

Service area

Active in 1 of 26 cantons · 1 municipality

  • TILugano
Offering

Products & services

Industry:ArchitectGeneral contractorProperty developer
✓ Offered6
Architectural Design
Architectural and building design by architects, engineers and specialist planners; includes developing solutions for construction projects commissioned by clients and based on the studio’s own projects.
General and Total Contracting
Coordination and delivery of construction projects as general or total contractor, from planning and cost estimates through site management to turnkey handover.
Real Estate Development and Investment
Development of construction projects commissioned by clients or initiated by the studio, and participation in building projects as an active or silent partner.
Renovation and Refurbishment
Conversion, renovation and refurbishment of buildings and homes; documented projects include the renovation and extension of residential properties.
Property Management
Real estate consultancy and management, including accounting, service-charge statements and tax-related accounting for property ownership.
Real Estate Brokerage
Real estate brokerage with preparation of sales documentation, pricing and sales strategies, and exclusive or non-exclusive sale mandates.
Trust & reputation

ranQ Trust Score of GIEFFE STUDIO SAGL: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of November 2026

GIEFFE STUDIO SAGL scores 56.2 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.53.324%
  • 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.45.610%
  • 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%
GIEFFE STUDIO SAGL 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%
GIEFFE STUDIO SAGL 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%
GIEFFE STUDIO SAGL scores 0.3 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 35.0.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

GIEFFE STUDIO SAGL reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 3.6 out of 5 stars from 5 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
3.6
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle3.65
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Via Elsa Franconi-Poretti 4
6962 Viganello
Opening hours
Mon
08:00 - 18:00
Tue
08:00 - 18:00
Wed
08:00 - 18:00
Thu
08:00 - 18:00
Fri
08:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-110.232.558
Founded
2003 · 23 years
Last commercial register change
November 12, 2024
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.
88.0
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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