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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,837 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceGümmenenZimmermann Bauunternehmung AG
Zimmermann Bauunternehmung AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Zimmermann Bauunternehmung AG is a construction company that carries out new builds, conversions, renovations and structural work for residential and commercial properties. Services include kitchen and bathroom remodels, exposed-concrete work, demolition and excavation, sewer and utility installations, emergency assistance for water damage, consulting, estimating and BIM.

AI-generated
Offering

Products & services

Industry:Building Maintenance
✓ Offered12
Renewal construction
Renewal construction for residential and commercial properties, including conversion, refurbishment, renovation, as well as smaller structural adjustments and additions.
Conversion and extension
Conversions, extensions and enlargements for residential and commercial buildings, including kitchen and bathroom conversions as well as riser pipe renewal.
New construction
New construction with building works for commercial and residential construction, including residential and commercial properties.
Renovation and refurbishments
Renovations and refurbishments of buildings, supplemented by maintenance work, waterproofing work and service work.
Kitchen and bathroom conversions
Kitchen and bathroom conversions as part of conversion and renewal projects, also for residential properties.
Special work and customer service works
Customer service works, special work, exposed concrete, core drilling and smaller structural interventions as required.
Dismantling and strip-out
Strip-out and dismantling of buildings, including clear-outs inside and around the building as well as small transports.
Damage remediation and emergency assistance
Surveys, breaking open and targeted chipping for water damage, as well as emergency help for storm damage, burst pipes and winter services.
Civil and utility connection works
Smaller civil engineering works, sewer work, utility connections and service line works around buildings.
Structural strengthening and seismic retrofitting
Structural strengthening and seismic retrofitting for the reinforcement and securing of existing buildings.
Advice and cost estimates
Advice, cost estimates and support with construction matters for private, commercial and public clients.
BIM
BIM for planning and support of construction projects and building processes.
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3.9/5

Zimmermann Bauunternehmung AG

Trust & reputation

ranQ Trust Score of Zimmermann Bauunternehmung AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 54% · As of October 2026

Zimmermann Bauunternehmung 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%
Zimmermann Bauunternehmung AG scores 62.4 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.58.012%
  • 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%
Zimmermann Bauunternehmung AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Zimmermann Bauunternehmung AG scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Zimmermann Bauunternehmung AG reaches a ranQ Trust Score of 3.9 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

Trüllernrain 4
3205 Gümmenen
Opening hours
Mon
08:00 - 12:00, 13:30 - 17:00
Tue
08:00 - 12:00, 13:30 - 17:00
Wed
08:00 - 12:00, 13:30 - 17:00
Thu
08:00 - 12:00, 13:30 - 17:00
Fri
08:00 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Branch
UID
CHE-455.989.889
Founded
2022 · 4 years
Last commercial register change
May 2, 2022
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.
76.0
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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