ranQ
ranQ
ranQ
DirectoryIndustriesPlacesKnowledgeComparisonsSoon
Sign inCheck visibility
ranQHSG Startup LabelRecognised by the
HSG Startup Label

The leading AI company directory, built to boost AI visibility.

DEENFRIT
Product
  • Pricing
  • Directory
  • Industries
  • Trust Score
Company
  • About
  • Partner program
  • Contact
  • Legal
© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceOberlunkhofenE. Koller Zimmerei AG
E. Koller Zimmerei AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of E. Koller Zimmerei AG encompasses the planning, manufacturing, and assembly of timber constructions, particularly in the areas of carpentry, joinery, and interior finishing. This includes, among others: carpentry work (floor, wall, and roof constructions), element construction (manufacturing of building components as elements), extensions and roof extensions, renovation and refurbishment of buildings, interior finishing (kitchens, doors, cabinets, locking systems, thermal insulation), joinery work (staircase construction, terraces, partition walls), and planning and consulting services for construction projects. The company thus offers a comprehensive range of services in the field of timber construction and interior finishing.

AI-generated
Offering

Products & services

Industry:Building MaintenanceInterior Construction
LeadhubOutbound Leads by COHAGA

Looking for direct email addresses and phone numbers?

Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.

Discover Leadhub
4.1/5

E. Koller Zimmerei AG

Timber Construction & Carpentry
✓ Offered12
Roof framing
Roof trusses for single- and multi-family houses as well as for commercial and utility buildings; design according to plans, CAD planning, processing of structural timber, insulation and cladding.
Prefabricated timber construction
Prefabricated timber elements for extensions and roof raises; preparation of work, detailed planning, weather-independent prefabrication in assembly halls, just-in-time delivery and crane placement on site.
Extensions / Roof extensions
Extensions and roof raises in timber frame construction; more living space, installation of dormers, short installation times, turnkey service and planning from one source.
Renovation / refurbishment
Conversions and refurbishments for roofs, walls, structural framing and floors; technical and visual renewal, dust-protection partition walls, externally assembled construction stairs and refurbishment from one source.
Interior fit-out
Interior fit-out with timber, floor coverings, ceiling and wall finishes, partition walls, thermal insulation, doors, windows, roof windows, staircases, kitchens and built-in wardrobes.
Kitchens
Planning, advice and installation of kitchens; support during the conversion and coordination with other trades, from consultation through to implementation.
Roof windows
Installation of roof windows in pitched roofs; various window types and sizes, sun-protection and decorative products, external roller shutters, awning screens and electrical and solar operation.
Doors
Custom-made front doors and interior doors for renovation and new build; manufactured to the specified dimensions and requirements and installed professionally.
Staircase construction
Individual wooden staircases as well as combinations of wood, metal and glass; planning, construction and advice for functional and design staircases.
Joinery work
General joinery work including built-in wardrobes, front doors and interior room doors, locking systems, fitted kitchens, bathroom furniture, handrails, floor coverings as well as curtain rails and window sills.
Terrace decking
Terrace decking made of wood and WPC; new builds, design and cleaning of existing terraces, as well as maintenance with terrace oil.
Planning / consulting
Individual planning with input plans, workshop drawings, 3D views and scheduling; structural calculations, itemisation/quoting for timber construction work and building-physics consulting.
Trust & reputation

ranQ Trust Score of E. Koller Zimmerei 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.

E. Koller Zimmerei 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%
E. Koller Zimmerei 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%
E. Koller Zimmerei 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%
E. Koller Zimmerei AG scores 7.1 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 35.7.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

E. Koller Zimmerei 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.

Knowledge

No knowledge articles yet

Once E. Koller Zimmerei AG has claimed this profile, we'll publish editorial articles and case studies here together.

Get started
Comparisons

E. Koller Zimmerei AG in comparison

Soon

Industry comparisons are coming soon

We're preparing industry comparisons that rank E. Koller Zimmerei AG by reviews, experience and specialisations.

Is this your company?

Claim the company profile of E. Koller Zimmerei AG to make its contact details visible. With a plan we additionally create and publish industry comparisons, articles and much more.

Secure profile

Location

Im Letten
8917 Oberlunkhofen

At a glance

Legal form
Corporation
UID
CHE-105.824.055
Founded
1980 · 46 years
Last commercial register change
October 21, 2009
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

    Similar companies

    SW
    Schreinerei Willisegger
    Zofingen
    LI
    Landmann Innenausbau GmbH
    Zetzwil
    CH
    Conrad Holzbau AG
    Mellingen
    SV
    Severin Vogelsang AG
    Villmergen
    PS
    Peterhans, Schibli & Cie AG
    Fislisbach
    AA
    Andreas Angst AG
    Endingen
    SK
    Stephan Kehr Holzbau + Bauplanung
    Wittnau
    DG
    dr gschaffig GmbH
    Buchs Ag