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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSpecialized Construction ActivitiesLandquartcsi bau ag
csi bau ag Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company csi bau ag is a construction company that specializes in various specialized areas in the field of construction. The core activities include: Consulting and expert opinions in the field of construction, Insulation and sealing of buildings, Application of liquid plastics and high-pressure water jets for cleaning and renovation work, Special joints and edge seals for bridges and other structures, Fall protection and safety measures for construction work, Mortar coatings and injections for the renovation of buildings, Construction heating and water damage renovation, Work on flat roofs, compact roofs, warm roofs and inverted roofs. The company thus offers a wide range of services in the field of construction, from consulting and planning to the execution of specialized work.

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Products & services

Industry:Specialized Construction Activities
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csi bau ag

✓ Offered9
Consulting / expert reports
Consulting and expert reports in the areas of cost estimates, technical solutions and damage investigations.
Insulation
Insulation of flat roofs, façades, perimeters, ceilings and floors to improve living comfort and save energy.
Liquid plastic works
Use of liquid plastic for flat roofs, groundwater protection, wet areas, below-grade zones, showers and terraces.
Flat roof works
Compact roof, warm roof and inverted roof for different flat-roof build-ups and waterproofing solutions.
Ultra-high-pressure water jetting
Ultra-high-pressure water jets with 1000 bar for structural cleaning and preparation work.
Works in below-grade / perimeter areas
Work in the below-grade and perimeter areas of buildings.
Bridge waterproofing
Waterproofing works on bridges with PBD membranes, liquid membranes and plastic membranes, or NU systems.
Injections
Masonry restoration, treatment of rising damp, crack repair and waterproofing against water ingress.
Water damage remediation
Measures for water damage, construction moisture, defective underfloor heating, dehumidification of cavities and drying with a tumble dryer.
Trust & reputation

ranQ Trust Score of csi bau ag: 3.7 out of 5.0

Trust Score3.7/ 5.0

Solid

x

Data basis 96% · As of October 2026

csi bau ag scores 39.0 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.41.924%
  • 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.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.35.08%
csi bau ag scores 85.5 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.55.07%
csi bau ag scores 85.0 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).85.022%
csi bau ag scores 4.0 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 35.4.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

csi bau ag reaches a ranQ Trust Score of 3.7 out of 5.0 — rated «Solid». The rating draws, among other things, on 2.3 out of 5 stars from 3 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
2.3
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle2.33
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Riedlöserstrasse 4
7302 Landquart

At a glance

Legal form
Corporation
UID
CHE-106.835.908
Founded
1997 · 29 years
Last commercial register change
January 20, 2022
Employees
1 to 10
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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