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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil Engineering FirmsRheinfeldenKeller Bauingenieure AG, Ingenieurbüro für Hoch- und Tiefbau
Keller Bauingenieure AG, Ingenieurbüro für Hoch- und Tiefbau Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Keller Bauingenieure AG is a consulting engineering firm specializing in structural engineering. The core activities include planning, construction management and engineering services in building construction and civil engineering, including foundation engineering, earthquake protection, flood protection, rehabilitation and proof of stability. The company also offers complementary services such as vibration measurements and construction project management.

AI-generated
Offering

Products & services

Industry:Civil Engineering Firms
✓ Offered12
Planning
Planning and calculation of design bases for building and civil engineering; formwork, reinforcement and structural steel drawings as well as building-services and sewerage plans in special deep foundations.
Structural Analysis
Structural analysis advice and calculations for concrete, steel and timber; earthquake safety, alterations and renovations, and dimensioning of excavation supports and slope stabilisation.
Structural Design
Structural engineering for building projects, including calculation and implementation of load-bearing structures according to the client s requirements.
Construction Management
Site management for planning, tendering, execution and acceptance; controlling costs, schedules and quality throughout the project.
Geotechnical Engineering
Planning, design calculations and ground securing for deep foundations, excavations, slope stabilisation, Rühl walls, soil-nail walls, pile walls and bored piles.
Repair and Renovation
Repair and renovation of damaged existing structures; assessment of damage, root-cause analysis and repair measures according to SN EN 1504 and SIA 269-1 to 7.
Earthquake Safety
Earthquake-resistant design and strengthening of existing buildings; assessment of earthquake safety and reinforcement of foundations, columns, beams, walls and ceilings.
Flood Protection
Planning and implementation of flood-protection projects for municipalities and the canton; retention basins, dykes, bank protection works, widening of waterways and diversion routes.
Structural Verification
Independent structural verification as a second opinion; review of structural calculations, compliance documentation with standards and release/approval of execution, especially in reinforced concrete and steel construction.
Vibration Measurements
Vibration measurements for construction projects in densely built areas; real-time monitoring of existing structures and sensitive facilities to prevent damage and ensure evidence.
Crack Records
Crack records as a condition survey before construction begins; documentation of existing cracks and damage to neighbouring buildings for evidence purposes.
Specialist Site Supervision
Specialist site supervision on the construction site, in particular for reinforcement acceptance and site inspections; checking the reinforcement before concreting.
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4.1/5

Keller Bauingenieure AG, Ingenieurbüro für Hoch- und Tiefbau

Trust & reputation

ranQ Trust Score of Keller Bauingenieure AG, Ingenieurbüro für Hoch- und Tiefbau: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Keller Bauingenieure AG, Ingenieurbüro für Hoch- und Tiefbau scores 62.1 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
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.75.024%
  • 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.40.910%
  • 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.50.08%
Keller Bauingenieure AG, Ingenieurbüro für Hoch- und Tiefbau 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%
Keller Bauingenieure AG, Ingenieurbüro für Hoch- und Tiefbau 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%
Keller Bauingenieure AG, Ingenieurbüro für Hoch- und Tiefbau scores 60.0 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 35.60.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Keller Bauingenieure AG, Ingenieurbüro für Hoch- und Tiefbau reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 4 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 4 reviews across all connected sources

Sources
GGoogle54
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Libellenweg 7
4310 Rheinfelden
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:00
Tue
07:00 - 12:00, 13:00 - 17:00
Wed
07:00 - 12:00, 13:00 - 17:00
Thu
07:00 - 12:00, 13:00 - 17:00
Fri
07:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.900.130
Founded
1980 · 46 years
Last commercial register change
February 13, 2026
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.100.06%
  • 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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