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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPainting & PlasteringGrabsOptimal AG
Optimal AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Optimal AG is a painting company providing consultation and the execution of painting and coating works. Services include renovation and new-build painting, spray-workshop coatings for various substrates, sandblasting, mould remediation, seamless floor systems and decorative techniques, and a showroom presenting sample panels.

AI-generated
Offering

Products & services

Industry:Painting & Plastering
✓ Offered11
Painting work
Renovation and new construction with consultation and execution; paints, coatings and surface treatments for indoor and outdoor areas, including sustainable product selection.
Wallpapering
Wallpapering work with individual wall designs and decorative wallpaper solutions for living and interior spaces.
Natural building materials
Lime and clay plasters made from natural building materials for decorative surfaces and a healthy indoor living climate.
Painting/Coating
Coating and painting work for wood, metal, plastic and glass; individual parts, series and large objects, with spray booth, drying rooms and delivery by arrangement.
Sandblasting
Sandblasting in the workshop and on site for fine, gentle surface treatments on doors, facades, wood and exposed concrete.
Seamless floor and wall coverings
Seamless floor and wall coverings with the Naturofloor system for wet areas, steps and refurbishing old tile coverings.
Industrial floor coverings
Industrial floor coverings for commercial and industrial areas.
Decorative finishes
Decorative surfaces with wall glazes, putty work, concrete imitations, metallic character finishes and striking wallpaper solutions.
Cleaning services
Cleaning of facades, roofs and sports grounds as well as graffiti removal with a hot-water jet system, also without chemical additives.
Mould remediation
Mould remediation and lasting removal with assessments, a network of specialists and ongoing training.
Plastering work
Plastering work for plaster, interior fit-out and surface works in construction and renovation.
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4.1/5

Optimal AG

Trust & reputation

ranQ Trust Score of Optimal 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.

Optimal 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%
Optimal 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%
Optimal 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%
Optimal AG scores 28.6 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 35.28.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Optimal 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

Ochsensandstrasse 4
9472 Grabs

At a glance

Legal form
Corporation
UID
CHE-108.816.922
Founded
2000 · 26 years
Last commercial register change
July 18, 2025
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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