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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceWollerauOLMAG AG
OLMAG AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

OLMAG AG is a construction and renovation company that carries out interior and exterior refurbishment and conversion projects as a single provider. Its services include building protection and drying, painting, drywall, flooring, natural stone and tile installation, plaster and stucco work, mold remediation and interior gutting/demolition.

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Offering

Products & services

Industry:Building MaintenanceSite Preparation
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OLMAG AG

Flooring & Tiling
Painting & Plastering
✓ Offered10
Renovation, Restoration and Conversion Works
Renovation, restoration and conversion works for both indoor and outdoor areas, all from one source for construction projects.
Painting Works
Painting works with façade paintwork, interior paintwork as well as lettering and markings.
Floor Laying Works
Floor laying works with screed, parquet and epoxy resin coatings.
Natural Stone, Slab and Tiling Works
Natural stone, slab and tiling works for floor and wall coverings.
Plastering and Rendering Works
Plastering and rendering works with internal plaster, external rendering, renovation plaster, historic plasters and Stucco Veneziano.
Drywall Construction
Drywall construction with ceiling systems, wall systems, dry screeds and attic conversions.
Building Protection
Building protection with sealing against penetrating or leaking water and surface protection.
Building Drying and Damage Restoration
Building drying with immediate measures and damage restoration after moisture or water damage.
Mould Remediation
Mould remediation with professional remediation.
Interior Stripping Works
Interior stripping works with dismantling, demolition and disposal.
Trust & reputation

ranQ Trust Score of OLMAG AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

OLMAG AG 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%
OLMAG 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%
OLMAG AG scores 83.3 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).83.322%
OLMAG AG scores 5.1 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 35.5.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

OLMAG AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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Location

Roosstrasse 53
8832 Wollerau

At a glance

Legal form
Corporation
UID
CHE-108.263.727
Founded
1995 · 31 years
Last commercial register change
January 26, 2024
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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