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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureConstruction & Project ManagementSchlierenSTRABAG AG
STRABAG AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

STRABAG AG is a construction company that executes complex timber, transport‑infrastructure, building, engineering and civil‑engineering projects. Its services include engineering and civil engineering, specialist foundation works, road construction, building construction, timber construction, tunnel construction and building‑material production.

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Products & services

Industry:Construction & Project Management
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STRABAG AG

✓ Offered8
Civil engineering structures
Engineering structures for infrastructure systems, power plants, cable car systems and other technically demanding structures in concrete and steel; from retaining walls to bridges and complex power-plant construction.
Civil engineering works
Civil engineering construction, demolition, excavation pits, earthworks, hydraulic works, power-station construction, transport infrastructure, utility and sewer construction as well as landscaping and site works.
Building construction
New construction, conversions and renovations in building construction; including infrastructure and shell construction, building in existing structures, civil engineering and simple masonry work.
Road construction
Road and trackway construction, deep track construction, utility and sewer construction, earth and civil engineering works as well as landscaping; for roads, motorways, rail lines, cycle paths and public squares.
Special foundation engineering
Enclosure of excavation pits, large-diameter bored piles, small-diameter bored piles, anchors, soil nails, sheet piling, diaphragm walls, groundwater lowering, soil freezing and well construction.
Tunnel construction
Planning, construction and commissioning of tunnel projects for underground transport routes; with a focus on safety, efficiency and modern construction methods.
Timber construction
Conventional carpentry, timber element construction, conversions, concrete formwork and engineered timber construction; complemented by customer-specific timber construction works.
Building materials production
Production and testing of building materials in our own gravel, concrete and asphalt plants; complemented by Type A landfills, recycling material processing and a testing laboratory.
Trust & reputation

ranQ Trust Score of STRABAG AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 100% · As of October 2026

STRABAG AG scores 63.0 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.69.624%
  • 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.35.310%
  • 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%
STRABAG AG scores 95.8 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.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.96.07%
STRABAG AG 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%
STRABAG AG scores 60.0 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 35.100.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.20.04%
Qualifications+0.00

STRABAG AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.7 out of 5 stars from 3 customer reviews. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.7
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle4.73
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

January 13, 2026Media
Neues Führungsduo für Strabag Amriswil
leaderdigital.ch

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Location

Unterrohrstrasse 5
8952 Schlieren
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 15:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.839.826
Founded
1928 · 98 years
Last commercial register change
August 7, 2026
Employees
101 to 500
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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