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DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringVispIngenieurbüro TEYSSEIRE und CANDOLFI AG, dipl. Ing. ETH/SIA
Ingenieurbüro TEYSSEIRE und CANDOLFI AG, dipl. Ing. ETH/SIA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Teysseire & Candolfi AG is an engineering firm specializing in various fields of expertise, including: railway technology, geotechnics, industry, maintenance, construction, measurement technology, urban water management, safety, underground construction, transportation, and hydraulic engineering. The company's core activity is the planning, design and implementation of infrastructure projects, particularly in the fields of transportation, hydraulic engineering and geotechnics. The company also offers services in the areas of construction, measurement technology and safety.

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Products & services

Industry:Technical Consulting & Engineering
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Ingenieurbüro TEYSSEIRE und CANDOLFI AG, dipl. Ing. ETH/SIA

Engineering consulting and project design
Engineering consulting, project design and construction management in the specialist areas of railway engineering, geotechnics, structural engineering, water engineering, transport engineering, municipal water engineering and underground construction.
Construction management and delivery
Construction management and delivery of new-build, refurbishment and rehabilitation projects, including SIA phases 31–53 for bridges, buildings, rail and infrastructure projects.
Geotechnics
Geotechnical investigations and planning for construction pits, soil-nail walls, retaining walls, embankment construction and geotechnical measures for transport and infrastructure works.
Water engineering and flood protection
Water engineering, channel widening, dams, water intakes, grit separators, river corrections and flood-protection projects for municipalities, cantons and infrastructure facilities.
Maintenance and rehabilitation
Maintenance and rehabilitation of tunnels, galleries, retaining walls, village roads, bridges and other existing infrastructure works.
Railway engineering
Railway engineering for railway lines, stations, track renewals, freight terminals, retaining walls and tunnel facilities in the surroundings of SBB, MGBahn and BLS.
Construction
Construction of new builds and conversions for residential developments, administration and operational buildings, bridges, walls and infrastructure structures.
Measurement technology
Measurement technology including vibration measurements, lake-bed surveys, and run-off and flow measurements for construction, water and infrastructure projects.
Municipal water engineering
Municipal water engineering with General Drainage Plan (GEP), ARA facilities, stormwater treatment basins, return pipelines and service lines.
Safety
Safety-related engineering services for projects and facilities; listed on the website as a separate area of work with ongoing references.
Trust & reputation

ranQ Trust Score of Ingenieurbüro TEYSSEIRE und CANDOLFI AG, dipl. Ing. ETH/SIA: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 96% · As of October 2026

Ingenieurbüro TEYSSEIRE und CANDOLFI AG, dipl. Ing. ETH/SIA scores 61.4 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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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.76.724%
  • 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.35.08%
Ingenieurbüro TEYSSEIRE und CANDOLFI AG, dipl. Ing. ETH/SIA scores 93.9 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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.82.07%
Ingenieurbüro TEYSSEIRE und CANDOLFI AG, dipl. Ing. ETH/SIA 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%
Ingenieurbüro TEYSSEIRE und CANDOLFI AG, dipl. Ing. ETH/SIA scores 17.1 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.17.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Ingenieurbüro TEYSSEIRE und CANDOLFI AG, dipl. Ing. ETH/SIA reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 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 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 5 reviews across all connected sources

Sources
GGoogle55
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Terbinerstrasse 18
3930 Visp

At a glance

Legal form
Corporation
UID
CHE-105.755.537
Founded
1992 · 34 years
Last commercial register change
August 8, 2024
Employees
21 to 50
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%
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