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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionPontresinaSeiler AG, Hoch- und Tiefbau, Pontresina
Seiler AG, Hoch- und Tiefbau, Pontresina Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Seiler AG is the execution of civil engineering and construction work, including hazardous substance remediation, in the Engadine region. The company offers a wide range of services, including the construction of single-family homes, high-altitude construction sites, customer-specific work such as conversions and renovations, as well as hazardous substance remediation.

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Offering

Products & services

Industry:Building ConstructionBuilding Maintenance
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4.3/5

Seiler AG, Hoch- und Tiefbau, Pontresina

Civil Engineering
Site Preparation
✓ Offered4
Building construction
Building construction for single-family houses, apartments, industrial and commercial buildings, conversions, renovations, as well as high-mountain construction sites and demolition work.
Civil engineering
Civil engineering including excavation work, installation of utility lines, restoration work, as well as bridge refurbishments, stream protection works, and restoration of dry stone walls and forest paths.
Customer projects
Customer projects for garden seating areas, bathrooms, apartment conversions, renovation and plastering work, as well as smaller maintenance and repair work.
Hazardous materials remediation
Hazardous materials remediation for asbestos, PCB and mould, including assessment, dismantling, cleaning, proper disposal and air clearance measurement.
Trust & reputation

ranQ Trust Score of Seiler AG, Hoch- und Tiefbau, Pontresina: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Seiler AG, Hoch- und Tiefbau, Pontresina scores 74.9 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.71.924%
  • 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.79.710%
  • 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%
Seiler AG, Hoch- und Tiefbau, Pontresina scores 90.9 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%
Seiler AG, Hoch- und Tiefbau, Pontresina 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%
Seiler AG, Hoch- und Tiefbau, Pontresina scores 22.9 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 35.22.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Seiler AG, Hoch- und Tiefbau, Pontresina 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 22 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
4.5
of 5

Aggregated from 22 reviews across all connected sources

Sources
GGoogle4.522
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Via da Bernina 26
7504 Pontresina
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:30
Tue
07:30 - 12:00, 13:00 - 17:30
Wed
07:30 - 12:00, 13:00 - 17:30
Thu
07:30 - 12:00, 13:00 - 17:30
Fri
07:30 - 12:00, 13:00 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.057.964
Founded
1959 · 67 years
Last commercial register change
September 26, 2025
Employees
11 to 20
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.100.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.85.03%
    • Full methodology

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