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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionSt. MoritzOscar Christoffel AG
Oscar Christoffel AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of O. Christoffel AG is construction, including specialized services such as facade masonry, exposed concrete work, special foundation engineering, slope stabilization and natural hazard protection. The company also offers additional services such as plastering, sealing, turnkey construction and real estate services.

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Products & services

Industry:Building ConstructionCivil Engineering Firms
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4.0/5

Oscar Christoffel AG

✓ Offered10
Building construction
Building construction for small jobs and major projects, from new builds to multi-year developments; delivery with modern technology and experienced specialists.
Civil engineering
Civil engineering for waterworks, utility lines, concrete structures and track work; projects are carried out in line with environmental guidelines and, where required, with ecological supervision.
Special foundations
Special foundations with excavation and rock works, blasting, stabilisation work and operations in difficult terrain and deep trenches or depressions.
Renovation and conversion
Renovation and modernisation of existing buildings while preserving their character; from smaller adjustments to comprehensive renewal of older houses.
Demolition and securing work
Demolition of walls, interiors or entire buildings, plus securing rocks and slopes through technical stabilisation.
Turnkey construction
Turnkey construction as a general contractor, from planning through full project execution to handover.
Plastering work
Plastering work for interiors and shell construction, using varied techniques for new surfaces and finished rooms.
Facade and dry construction
Facade and dry construction for facade fronts and partition walls, carried out with minimal effort and dirt.
Construction waterproofing
Construction waterproofing and bonded reinforcement for underground garages, wet rooms and other facilities to protect against moisture ingress.
Screeds and flowing screeds
Screeds and flowing screeds for rooms with underfloor heating, pipe connections and other installations.
Trust & reputation

ranQ Trust Score of Oscar Christoffel AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Oscar Christoffel AG scores 52.7 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.68.224%
  • 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.17.610%
  • 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.50.08%
Oscar Christoffel AG scores 94.3 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.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.90.07%
Oscar Christoffel AG 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%
Oscar Christoffel AG scores 14.3 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 35.14.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Oscar Christoffel AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 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
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Via Surpunt 56
7500 St. Moritz
Opening hours
Mon
07:30 - 12:00, 13:30 - 18:00
Tue
07:30 - 12:00, 13:30 - 17:30
Wed
07:30 - 12:00, 13:30 - 17:30
Thu
07:30 - 12:00, 13:30 - 17:30
Fri
07:30 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.050.732
Founded
1989 · 37 years
Last commercial register change
February 26, 2026
Employees
51 to 100
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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