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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureGeneral contractorOberdorf Blnahbau ag
nahbau ag Logo
Verified· 2 sourcesTrust Score
Summary

About the company

nahbau ag specialises in renovating existing properties and also carries out smaller renovation projects. The company advises on, plans and delivers construction projects, coordinating comprehensive renovations as a general contractor.

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Service area

Offering

Products & services

Industry:General contractor
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4.0/5

nahbau ag

✓ Offered8
Renovation of existing properties
Renovation of existing properties, including careful restoration of older buildings, resource-saving construction methods and tailored solutions from a single source.
Renovations
Smaller renovations to modernise properties, implemented professionally and on schedule, without extensive refurbishment.
General contracting for renovation projects
General contracting for comprehensive renovations, with coordination and management of all trades involved as well as smooth project implementation.
Consulting
Consulting on existing properties, needs, living situation, life planning, budget and property data as the first step in a renovation or purchase project.
Feasibility study
Feasibility study for specific properties, clarifying the framework conditions, checking funding options and providing a rough cost estimate.
Preliminary project
Preliminary project with assessment of building options, definition of the project scope, initial construction plans and a detailed cost estimate.
Construction project
Construction project to prepare the documents for the building permit, including planning of details, clarification work and sustainable construction methods.
Implementation
Implementation of the construction project with quotations, contract award, construction-phase control, monitoring and handover of the building.
Trust & reputation

ranQ Trust Score of nahbau ag: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 54% · As of November 2026

nahbau 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.
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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%
nahbau ag scores 67.9 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.50.012%
  • 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.70.07%
nahbau ag scores 86.7 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).86.722%
nahbau ag scores 3.7 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 35.3.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

nahbau ag reaches a ranQ Trust Score of 4.0 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 November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Weidentalweg 9a
4436 Oberdorf Bl

At a glance

Legal form
Corporation
UID
CHE-176.673.700
Founded
2023 · 3 years
Last commercial register change
September 30, 2026
Employees
11 to 20

Active in 1 of 26 cantons

  • BLBasel-Country
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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