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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding contractorBaselPlanex Bau GmbH
Planex Bau GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Planex Bau GmbH carries out building construction and works on flat roofs, waterproofing and interior fit-outs. It manages projects and coordinates specialist partner firms, from consultation and quotations through to handover.

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Service area

Offering

Products & services

Industry:Building contractorWaterproofing
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Planex Bau GmbH

✓ Offered12
Flat Roof Works
Flat roof waterproofing, insulation and slope insulation, roof build-up, renovations, new builds and roof maintenance for durable roof solutions.
Waterproofing Works
Waterproofing works indoors and outdoors with liquid-applied membranes, bitumen waterproofing, plastic sheets, and joint and connection sealing.
Sheet Metal Roofing Works
Sheet metal flashings, gutters, downpipes, parapet coping, edging, and coverings and claddings for roofs and exterior areas.
Wet Room Waterproofing
Waterproofing for bathrooms, showers, washrooms and other wet areas to protect against moisture and water ingress.
Exterior Glass Works
Glazing, glass railings, canopies, partition walls and other glass elements for outdoor areas and building envelopes.
Exterior Timber Construction
Timber structures, terraces, substructures, cladding and complementary components for outdoor areas.
Exterior Steel and Metal Construction
Railings, stairs, canopies, structures, frames, finishes and custom fabrications for exterior areas.
Joinery Works
Built-ins, doors, furniture, claddings, repairs, adjustments and custom-made timber work.
Plastering Works
Plastering, skim coats, repairs and wall and ceiling finishing for clean interior surfaces.
Wall and Ceiling Works
Partition walls, suspended ceilings, dry construction, cladding, insulation and room layout for interior fit-outs.
Flooring Works
Parquet, vinyl, laminate, terrazzo floors, substrate preparation, renovation and installation of floor coverings.
Interior Glass Works
Glass partitions, glass doors, mirrors, shower screens and other glass elements for interiors.
Trust & reputation

ranQ Trust Score of Planex Bau 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

Planex Bau 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%
Planex Bau GmbH scores 40.1 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.0.012%
  • 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%
Planex Bau 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%
Planex Bau 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.

Knowledge

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Location

Gärtnerstrasse 115
4057 Basel

At a glance

Legal form
Limited Liability Company
UID
CHE-176.815.294
Founded
2026 · 0 years
Last commercial register change
June 8, 2026
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • BSBasel
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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