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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,544 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsCarouge GeADVA SA
ADVA SA Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of ADVA is the planning, coordination and implementation of architectural projects, particularly in the areas of transformation, renovation, rehabilitation and restoration of existing buildings, including listed buildings. This also includes services such as the creation of building plans, the coordination of construction projects and the consulting of customers in the implementation of their construction projects.

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Products & services

Industry:Architecture Firms
✓ Offered5
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4.1/5

ADVA SA

Architectural office
Architectural studies, design and realization of renovation, conversion, attic extension (surélévation) and new-build projects; site supervision, coordination of trades and taking charge of all phases.
Custom home construction
Custom home construction in Geneva and Carouge, from concept to execution; selecting professionals, handling administrative procedures and building according to needs, the site and the budget.
Dwelling renovation
Renovation of dwellings and old houses, from design to construction; refurbishment, remediation, structural consolidation and preservation of the old character.
House extension project
House extension to add living space; architectural study, turnkey expansion and integration of constraints relating to daylight, insulation, services and budget.
Transformation of existing buildings
Transformation of villas, apartments and listed buildings; restructuring of spaces, creation of a homogeneous overall set-up and harmonization with the existing building fabric.
Trust & reputation

ranQ Trust Score of ADVA SA: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

ADVA SA 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.
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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%
ADVA SA scores 72.8 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.70.212%
  • 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%
ADVA SA 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%
ADVA SA scores 5.7 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 35.5.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

ADVA SA 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.

Knowledge

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Location

Rue Jacques-Grosselin 23
1227 Carouge Ge
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-431.861.307
Founded
2020 · 6 years
Last commercial register change
January 24, 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.
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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