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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringAarauBallmer + Partner AG
Ballmer + Partner AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Ballmer + Partner AG is the provision of engineering, planning and consulting services in the fields of transportation, civil engineering and environment. This includes in particular: traffic planning and management, civil engineering, including road construction, sewerage and utility lines, environmental consulting, including noise and environmental impact assessments, measurements and tightness tests, consulting and planning in the field of mobility management and parking. The company thus offers comprehensive services for the planning, implementation and maintenance of infrastructure projects.

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Products & services

Industry:Technical Consulting & EngineeringCivil Engineering Firms
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Ballmer + Partner AG

✓ Offered7
Traffic planning
Traffic planning, mobility management, site servicing, parking, road safety, as well as road and infrastructure planning from the first study to execution.
Infrastructure works planning
Infrastructure works planning, design and execution for road construction, sewerage and general utility lines, including consulting, site supervision and cost-sharing contribution plans.
Noise and environmental impact assessment reports
Reports on road noise and operational noise, advice for construction projects, road noise cadastre, as well as environmental impact assessments for traffic, noise and air pollutants.
Traffic measurements
Cross-section measurements, intersection flow counts, speed measurements, number surveys, as well as pedestrian, cycling and video surveys.
Leak-tightness tests
Leak-tightness tests of wastewater treatment plants, stormwater basins, pump shafts, de-icing basins and manure pits.
Noise measurements
Sound level measurements as a basis for assessing and addressing noise issues in projects and investigations.
Light measurements
Measurement of illuminance with a luxmeter, as well as assessment of light measurements at pedestrian crossings.
Trust & reputation

ranQ Trust Score of Ballmer + Partner AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Ballmer + Partner AG scores 49.8 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.68.224%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.17.610%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.35.08%
Ballmer + Partner AG scores 89.3 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.70.07%
Ballmer + Partner 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%
Ballmer + Partner AG scores 12.3 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 35.12.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Ballmer + Partner AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Distelbergstrasse 22
5000 Aarau

At a glance

Legal form
Corporation
UID
CHE-114.279.702
Founded
2008 · 18 years
Last commercial register change
February 12, 2025
Employees
11 to 20
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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