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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSpecialist foundation engineeringZurichcdc Spezialbau GmbH
cdc Spezialbau GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

cdc Spezialbau GmbH works in building protection, new construction, renovation and refurbishment. Its services include masonry work, waterproofing, building-envelope sealing, fire stopping, sealant joints, and concrete drilling and cutting.

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Service area

Offering

Products & services

Industry:Specialist foundation engineering
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cdc Spezialbau GmbH

✓ Offered6
Bricklayer’s work
Small and large construction jobs from one source: repairs and minor conversions, plaster and rendering work, locate leaks and seal them, and remedy water damage.
Waterproofing
Waterproofing of entire buildings, individual components, joints and water-bearing cracks against water and moisture; flat-roof, terrace, balcony and injection waterproofing.
Caulking joints
Installation and renovation of caulking joints in wet rooms, on façades and indoors; application of silicone, acrylic, hybrid and PU joint sealants.
Building envelope waterproofing
Interior and exterior waterproofing of window and building component connections, installation of wind barriers, upgrading thermal insulation, and sealing air leakages.
Firestopping
Firestopping for pipe, cable and floor penetrations; sealing cleanrooms and air leakages to prevent air exchange as well as the transmission of sound and odours.
Concrete drilling, cutting and coring
Core drilling and diamond drilling in reinforced concrete, masonry and natural stone; cutting and sawing concrete in wet or dry applications, including at an angle or overhead.
Trust & reputation

ranQ Trust Score of cdc Spezialbau GmbH

Trust Score

No score yet

x

A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity. Missing evidence: Review quality, Review volume, Review recency, Media authority

Data basis 54% · As of November 2026

cdc Spezialbau GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
cdc Spezialbau GmbH scores 75.7 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.83.012%
  • 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%
cdc Spezialbau GmbH 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%
cdc Spezialbau GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%

The data basis is 54%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Media authority. As of November 2026.

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

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Location

Rautistrasse 60
8048 Zurich

At a glance

Legal form
Limited Liability Company
UID
CHE-339.834.319
Founded
2017 · 9 years
Last commercial register change
December 13, 2021
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • ZHZurich
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.
88.0
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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