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

About the company

RTB Corvaglia Sàrl is a general construction and real estate development company. It supports new-build, renovation and conversion projects from planning through completion, and develops and markets its own apartments, villas and halls.

AI-generated
Presence

Service area

Offering

Products & services

Industry:Architect
✓ Offered8
New construction
New construction of villas, apartments and halls, with overall project management from design to completion.
Renovation and conversion
Renovation and conversion of real estate properties, with technical monitoring, coordination of the parties involved and administrative steps linked to the project.
Turnkey villas
Turnkey villas built and marketed by RTB Corvaglia, with client support up to the acquisition.
Real estate development
Development and marketing of own real estate projects, in particular apartments, villas and halls, with support when purchasing.
Comprehensive project support
Support from design to completion, technical monitoring, coordination of the stakeholders, advice and administrative procedures.
Land value enhancement
Services for land value enhancement as part of construction and real estate development projects.
Sale of real estate
Real estate for sale, in particular apartments, villas, warehouses and industrial halls.
Rental of real estate
Real estate available for rent, in particular offices and warehouses, with searching by type, location, rooms and budget.
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4.3/5

RTB Corvaglia Sàrl

Trust & reputation

ranQ Trust Score of RTB Corvaglia Sàrl: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of November 2026

RTB Corvaglia Sàrl scores 75.2 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.72.024%
  • 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.80.810%
  • 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%
RTB Corvaglia Sàrl 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%
RTB Corvaglia Sàrl 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%
RTB Corvaglia Sàrl scores 68.6 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 35.68.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

RTB Corvaglia Sàrl reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.5 out of 5 stars from 23 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
4.5
of 5

Aggregated from 23 reviews across all connected sources

Sources
GGoogle4.523
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Route du Simplon 81
1895 Vionnaz
Opening hours
Mon
24h
Tue
24h
Wed
24h
Thu
24h
Fri
24h
Sat
24h
Sun
24h

At a glance

Legal form
Limited Liability Company
UID
CHE-108.187.049
Founded
1995 · 31 years
Last commercial register change
April 7, 2025
Employees
11 to 20

Active in 1 of 26 cantons

  • VSValais
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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